The moles of 39 grams sucrose (C₁₂H₂₂O₁₁) does represent in a gram of cola = 0.11 moles
How to determine the mole?Moles (mol) are amounts of substances measured in Avogadro's number (6.022 x 10²³) of atoms and molecules.
The mole unit, as well as the ability to convert masses in grams to moles, are critical for chemical reactions. The number of moles of a substance in a sample is calculated by dividing the mass in g by the molar mass, which yields the amount in moles.
Hence,
Molar mass of sucrose:
= (12 x 12) + (22 x 1) + (11 x 16)
= 342 gr/mol
Moles of sucrose = mass of sucrose / molar mass of sucrose
= 39 / 342
= 0.11 moles
Learn more about moles here: https://brainly.com/question/30337481
#SPJ4
If solutions of barium nitrate and sodium sulfate are mixed and then poured into a filter, the solid remaining on the filter will be A. Barium Nitrate B. Sodium nitrate C. Barium sulfate D. Sodium sulfate
If solutions of barium nitrate and sodium sulfate are mixed and then poured into a filter, the solid remaining on the filter will be Barium sulfate. So option B is correct.
This occurs because barium nitrate and sodium sulfate undergo a double displacement reaction, resulting in the formation of the insoluble salt barium sulfate, which precipitates out of the solution and can be filtered. The reaction can be represented as:
Ba(NO3)2 + Na2SO4 -> BaSO4 + 2NaNO3
Barium sulfate is a solid salt that is insoluble in water, meaning it does not dissolve and remains as a solid precipitate. This allows the solid barium sulfate to be easily separated from the solution through filtration.
To learn more about Barium sulfate:
https://brainly.com/question/4417698
#SPJ4
Answer:
Barium Sulfate
Explanation:
BaSO4 is insoluble in water so it remains on a filter.
The answer is (3)
Question:
To say that electric charge is conserved is to say that electric charge _____.
Electric Charge:
Electric Charge is a property of matter. There are two types of charges that exist in nature. These are called positive and negative respectively.
The most basic unit of negative charge is a subatomic particle called 'electron'. On the other hand, the most basic unit of positive charge is a subatomic particle called 'proton'.
To say that electric charge is conserved is to say that electric charge cannot be created or destroyed, but only transferred between objects.
This means that the total amount of electric charge in a system remains the same even after any number of interactions or reactions have taken place.
Electric charge is a property of matter that causes it to experience a force when placed in an electromagnetic field . Electric charge can be either positive or negative, and objects with the same charge will repel each other, while objects with different charges will attract each other.
Electric charge is carried by subatomic particles such as electrons and protons, and the amount of charge on an object is determined by the number of these particles it contains. Electric charge is conserved, meaning that it cannot be created or destroyed, only transferred between objects.
Learn more about electric charge:
https://brainly.com/question/26978411
#SPJ4
How do you find the limiting reagent in a reaction example?
To find the limiting reagent in a reaction example, you must first identify the reactants and their respective molar amounts.
Then, you must calculate the moles of each reactant, and the moles of product that can be formed from the given amount of each reactant.
Finally, you must compare the moles of each reactant to the moles of the product that can be formed and determine which reactant is in the smallest amount. This reactant is the limiting reagent.
What is reaction?
In chemistry, a reaction is a process that involves the rearrangement of atoms to form new substances. Reactions are the building blocks of chemistry, and when chemical reactions occur, substances are broken apart and rearranged to form new substances with different chemical properties.
To learn more about reaction
Here: https://brainly.com/question/11231920
#SPJ4
the metal zirconium becomes superconducting at temperatures below . calculate the temperature at which zirconium becomes superconducting in degrees celsius. round your answer to decimal places.
The temperature at which zirconium becomes superconducting in degrees celsius is -272.604° C.
Superconductivity is a phenomenon where a material loses all electrical resistance below a certain temperature, called the critical temperature. In other words, the electrical conductivity of a superconductor is infinite below this temperature.
This property has many practical applications, including in high-field magnets, electrical power transmission, and medical imaging equipment.
The underlying mechanism of superconductivity is not yet fully understood and is an active area of research in physics and materials science. There are several theoretical models that attempt to explain the behavior of superconductors, but more research is needed to fully understand the phenomenon.
Therefore, The temperature at which zirconium becomes superconducting in degrees celsius is -272.604° C.
To know more about superconducting refer to:
brainly.com/question/20709121
#SPJ4
In this exercise, you will interpret how to read a Safety Data Sheet (SDS) by listing the basic information provided on a SDS. b Procedure 1 Use the Internet to find the SDS for regular bleach (sodium hypochlorite, 4-6%). 2 Identify each of the following items on the SOS: a. Physical state b. Routes of exposure and symptoms
c. Required protective equipment d. First aid procedures e. Firefighting measures f. Chemical reactivity g. Safe storage h. Safe disposal i. Environmental precautions and ecotoxicity j. Spill cleanup procedures 3 Record the SDS information for each of the items listed in step 2 into Data Table 2. FFH SDS Information Liquid Data Table 2
(A) Physical state : Thin liquid
B) Routes of exposure and symptoms
Inhalation: Exposure to vapor or mist may irritate respiratory tract and cause coughing. Inhalation of high concentrations may cause pulmonary edema.
What is Safety Data Sheet ?A safety data sheet, also known as a material safety data sheet or product safety data sheet, is a document that contains details about workplace safety and health when using various substances and goods.
A Safety Data Sheet is a thorough informational document created by the maker or importer of a hazardous substance (formerly known as a Material Safety Data Sheet). It provides information on the product's physical and chemical characteristics.
Learn more about Safety Data Sheet here:
https://brainly.com/question/23694150
#SPJ4
Three students are asked to discuss the percent error obtained from this lab and explain some sources of error that would account for the discrepancy seen, if any. Select the student that employs correct scientific reasoning. • Student 1: If the reaction was not allowed to go to completion, the sodium bicarbonate would not have fully decomposed, making the final mass higher than the theoretical. • Student 2: If the baking soda was not heated long enoughthe final mass of solid product would be low. • Student 3: The student didn't weigh the masses correctly therefore human error is the main source of discrepancy. choice answersStudent 3 Student 1 Student 2
Students who use correct scientific reasoning are Student 1 namely: If the reaction is not allowed to finish, the sodium bicarbonate will not decompose completely, making the final mass higher than the theory.
If the sodium bicarbonate is not decomposed properly, carbon monoxide and water will not be formed, which can be removed to reduce the mass of the product. Therefore, due to an incomplete reaction, the product will have more weight, or the final mass will be greater than in theory.
In the case of Student 2, it is clear from the reasons above, Student 2 is wrong. In the case of Student 3, this is not a scientific explanation and just a random guess that doesn't hold in every situation.
Learn more about scientific reasoning at https://brainly.com/question/16981456.
#SPJ4
Select all intermolecular forces that contribute to creating a solution of HCl in CH3CN.a. London Dispersionb. Dipole-dipolec. H-bonding
Intermolecular forces that contribute to creating a solution of HCl in CH3CN are London Dispersion, Dipole-dipole, H-bonding.
Intermolecular forces play an important role in determining the properties of a solution. In a solution of HCl in CH3CN (Acetonitrile), three types of intermolecular forces are present:
a. London Dispersion Forces: These are weak and short-range forces that arise due to fluctuations in the electron distribution in a molecule, causing temporary polarization.
b. Dipole-dipole Interactions: These forces are caused by the interaction between polar molecules, such as HCl and CH3CN, which have a permanent electric dipole moment. The positive end of one molecule is attracted to the negative end of another molecule.
c. Hydrogen Bonding: HCl molecules can participate in hydrogen bonding with the nitrogen atom in CH3CN, due to the presence of a hydrogen atom in the HCl molecule and a nitrogen atom in CH3CN with a lone pair of electrons.
These forces contribute to the stability of the solution and influence its properties, such as solubility, viscosity, and surface tension.
Learn more about Intermolecular forces:
brainly.com/question/9007693
#SPJ4
Why is FeO called Iron II oxide?
The presence of iron in the +2 oxidation state, which denotes that it has shed two electrons compared to its neutral state, FeO is also known as iron(II) oxide.
What is FeO?FeO, also referred to as iron(II) oxide, gets its name from the fact that it contains iron that is in the +2 oxidation state.
Why is FeO called iron II oxide?The amount of electrons an element has gained or lost in comparison to its neutral state is referred to as its oxidation state, and it is significant in determining a compound's chemical characteristics and reactivity.
Iron is in the +2 oxidation state in iron(II) oxide, which means that it has lost two electrons compared to its neutral state. The subscript "II" in iron(II) oxide serves as a clue. Iron, on the other hand, is found in the +3 oxidation state in iron(III) oxide, usually referred to as hematite, meaning that it has lost three electrons compared to its neutral state.
It is significant to remember that an element's oxidation state inside a molecule can impact its reactivity and other chemical characteristics. For instance, iron(II) oxide has a distinct colour and crystal structure than iron(III) oxide and is less reactive.
As a result of an element's oxidation state within a compound can significantly affect its chemical composition and reactivity.
To know more about iron oxide, visit:
https://brainly.com/question/18500540
#SPJ4
in which reaction is h2o considered to be acting as an acid?
If water (H2O) gives a proton (H+) to another molecule, it is seen as functioning as an acid in the process.
The proton-accepting molecule is referred to as the base in an acid-base reaction, which is what this reaction is.
For instance, when water and ammonia (NH3) mix, water can give ammonia a proton, resulting in the formation of the hydronium ion (H3O+) and the ammonium ion (NH4+):
NH3 + H2O -> H3O + NH4 +
Ammonia, which is acting as a base and accepting a proton, is receiving a proton from water, which is functioning as an acid in this reaction.
Learn more about molecules here:
https://brainly.com/question/19922822
#SPJ4
Which of these gases occupies the greatest volume at standard temperature and pressure (STP)? O 0.685 mol Ar O 0.685 mol SF 0.685 mol NH, All four gases occupy the same volume at STP. 0.685 mol Cl,
All four gases occupy the same volume at standard temperature and pressure (STP), which is defined as 0°C (273 K) and 1 atm. The volume of each gas at STP is 22.4 L per mole.
Standard temperature and pressure (STP) is a set of standard conditions used to compare the properties of gases.STP is defined as 0°C (273 K) and 1 atm pressure.This allows for gases to be compared under the same conditions, making it easier to compare their properties.The volume of one mole of any gas at STP is 22.4 L.The pressure and temperature of a gas can greatly affect its volume, so by defining STP, scientists can compare gases with greater accuracy. The use of STP is common in chemistry and physics, particularly in the study of gases and their behavior. In addition to comparing the properties of gases, STP can also be used to determine the density, molar mass, and molar volume of gases. STP is not the standard temperature and pressure found in everyday life, but it provides a common reference point for scientific comparison. The concept of STP is based on the ideal gas law, which states that the pressure, volume, and temperature of a gas are related.
learn more about standard temperature and pressure here :
https://brainly.com/question/14820864
#SPJ4
what does the bird use to protect there self?
The diffferent ways birds use to protect itself are:
Plumage CamouflageEgg CamouflageLiving Near “Protector” SpeciesNest Cover and ConcealmentFlight RetreatDistraction DisplaysDirect Confrontation.To know more about birds:
https://brainly.in/question/15216214
The Pressure P Of A Sample Of Oxygen Gas That Is Compressed At A Constant Temperature Is Related To The Volume V Of Gas By A Reciprocal Function Of The Form P = K/V. (A) A Sample Of Oxygen Gas That Occupies 0.671 M³ Exerts A Pressure Of 39 KPa At A Temperature Of 293 K (Absolute Temperature Measured On The Kelvin Scale). Find The Value Of K In The
The pressure P of a sample of oxygen gas that is compressed at a constant temperature is related to the volume V of gas by a reciprocal function of the form P = k/V.
(a) A sample of oxygen gas that occupies 0.671 m³ exerts a pressure of 39 kPa at a temperature of 293 K (absolute temperature measured on the Kelvin scale). Find the value of k in the given model.
(b) If the sample expands to a volume of 0.916 m³, find the new pressure.
(a) To find the value of k in the given model, use the given values of P and V:
P = 39 kPa = 39 * 10^3 Pa
V = 0.671 m³ = 0.671 * 10^3 L
P = k/V
k = PV = 39 * 10^3 * 0.671 * 10^3 = 26,049,000
(b) To find the new pressure, use the value of k and the new volume:
V = 0.916 m³ = 0.916 * 10^3 L
P = k/V = 26,049,000 / (0.916 * 10^3) = 28,538.56 Pa = 28.54 kPa.
Pressure is a physical quantity that describes the force per unit area exerted by a substance, such as a gas, liquid, or solid, on a surface that is in contact with it. It is commonly expressed in units of pascals (Pa), atmospheres (atm), or kilopascals (kPa). Pressure is a crucial concept in many fields, including physics, engineering, and medicine, and plays a critical role in various processes, such as combustion, fluid flow, and thermodynamics.
Find out more about Pressure
brainly.com/question/28549246
#SPJ4
a student investigates the reaction between ag and hno3 represented by the equation above
(b) AgNO3, NO, and H2O are the reaction's byproducts. The gas NO will enter the atmosphere. Since AgNO3 is soluble in H2O, AgNO3 may be separated by removing H2O from the reaction mixture.
The following is the reaction: 3Ag(s) + 4HNO3(aq)...................> 3AgNO3(aq) + NO(g) + 2H2O(l) (a) The formula for dHrxn is 3dHf(AgNO3) + dHf(NO) + 2dHf(H2O) - 3dHf(Ag) - 4dHf (HNO3)
dHrxn = (-3 x 101) + 90 - (2 x 286) - 0 + (4 x 207) kJ/mol.
An oxidation-reduction process occurs when HNO3 (nitric acid) and Ag (silver) interact. Silver serves as a reducing agent and nitric acid serves as an oxidising agent when combined in nitric acid. This causes the release of nitrogen dioxide gas and the production of silver nitrate (AgNO3) (NO2). The following is a representation of the balanced chemical equation for this reaction: AgNO3 + NO2 + H2O = Ag + HNO3
In analytical chemistry, this reaction is frequently used to identify the presence of silver in a sample. The formation of a white precipitate of AgNO3 indicates the presence of silver ions in the sample. Silver plating and the creation of silver compounds for different industrial uses both utilise the interaction between Ag and HNO3.
learn more about reaction here:
https://brainly.com/question/28984750
#SPJ4
the reaction below is at equilibrium. use lechatelier's principle to predict the effect of adding more hydrogen gas to the equilibrium reaction mixture n2(g) 3h2(g) <----> 2nh3(g)? a. The equilibrium position will remain unchanged.
b. The equilibrium position will shift to the right.
c. The equilibrium position will shift to the left.
d. The equilibrium constant will increase.
e. All of the nitrogen gas will be used up.
The option c. The equilibrium position will get shifted to the left, is the correct choice.
What is lechatelier's principle?Lechatelier's Principle is a principle in chemical thermodynamics that states that any stress applied to a system at equilibrium will cause the system to adjust in a way that minimizes the effect of the stress and re-establish equilibrium. This principle can be used to predict the effect of changes in concentration, temperature, pressure, or addition of a catalyst on a chemical reaction at equilibrium.
The reaction N2(g) + 3H2(g) ⇌ 2NH3(g) is at equilibrium and can be analyzed using Le Chatelier's principle.
If we increase the temperature of the reaction mixture, the reaction will shift to the left to counteract the increase in temperature. If we decrease the pressure of the reaction mixture, the reaction will shift to the right to counteract the decrease in pressure. If we add more H2 to the reaction mixture, the reaction will shift to the right to counteract the increase in H2.If we add more N2 to the reaction mixture, the reaction will shift to the left to counteract the increase in N2.
To know more about chemical reaction, visit:
https://brainly.com/question/29762834
#SPJ4
longest side chain in amino acids
Leucine's side chain has the longest side chain of the given amino acids. So, option 2 is correct.
The side chain of Leucine is a branched-chain aliphatic hydrocarbon composed of five carbon atoms, making it one of the largest among the 20 standard amino acids. The side chain in Leucine is hydrophobic, meaning it does not interact well with water, and is an important component of many protein structures. Other amino acids with long side chains include Valine (Val or V), Isoleucine (Ile or I), and Phenylalanine (Phe or F), which have four, five, and nine carbon atoms in their side chains, respectively. The length and composition of an amino acid's side chain can greatly impact its properties and behavior within proteins, and the unique properties of each amino acid contribute to the overall structure and function of proteins.
Learn more about side chain
brainly.com/question/14743011
#SPJ4
The complete question is:
Which of these amino acids has the longest sidechain?
1) Serine
2) Leucine
3) Asparagine
4) Valine
an unknown containing one or more of the ions studied in this experiment has the following properties
The unknown solution contains chloride ions and possibly molybdenum ions.
a. No effect on addition of 6 M HNO3: This suggests that the ions present in the solution are not acidic and do not react with strong nitric acid.
b. No effect on addition of 0.1 M AgNO3 to solution in Part A: This suggests that the ions present in the solution are not chloride ions, as AgCl is a white precipitate.
c. White precipitate on addition of 1 M BaCl2 to solution in Part A: This suggests that chloride ions are present in the solution.
d. Yellow precipitate on addition of (NH4)2MoO4, to solution in Part A: This suggests that ions with a molybdenum oxidation state are present in the solution.
Based on this information, it can be concluded that the unknown solution contains chloride ions and possibly molybdenum ions. The absence of other ions cannot be definitively concluded from this information alone.
Learn more about ions here: brainly.com/question/14982375
#SPJ4
Complete question:
An unknown containing one or more of the ions studied in this experiment has the following properties:
a. No effect on addition of 6 M HNO3.
b. No effect on addition of 0.1 M AgNO3 to solution in Part A.
c. White precipitate on addition of 1 M BaCl2 to solution in Part A.
d. Yellow precipitate on addion of (NH4)2MoO4, to solution in Part A.
Identify the conjugate acid-base pairs:
Check all that apply.
a. HCl and NH+4
b. NH3 and Cl−
c. HCl and Cl−
d. NH3 and NH+4
According to the question the conjugate acid - base pair are as follows.
What is acid - base pair ?An acid-base pair is a type of chemical reaction that involves the transfer of protons (H+) between an acid and a base. Acid-base pairs are important in many areas of chemistry, including biochemistry and inorganic chemistry. In a reaction between an acid and a base, the acid donor donates a proton to the base, resulting in a new acid and base. The acid-base pair is often referred to as an acid-base equilibrium, as the reaction is reversible and the acid and base can be regenerated. Acid-base pairs are important in many biological processes, including cellular respiration, DNA and RNA synthesis, and protein synthesis. They help to control the pH of a solution, as well as the charge of molecules, which influences the reaction rate and the reactivity of molecules. Acid-base pairs are also important in other areas of chemistry, such as in the synthesis of organic compounds and in analytical chemistry
a. HCl and NH+4: This is a correct conjugate acid-base pair because HCl is the acid and NH+4 is the conjugate base.
b. NH3 and Cl−: This is a correct conjugate acid-base pair because NH3 is the base and Cl− is the conjugate acid.
c. HCl and Cl−: This is not a correct conjugate acid-base pair because HCl is an acid and Cl− is an anion, not a conjugate base.
d. NH3 and NH+4: This is not a correct conjugate acid-base pair because NH3 is a base and NH+4 is an acid, not a conjugate base.
To learn more about acid - base pair
https://brainly.com/question/16938292
#SPJ4
What does hypo and hyper mean in medical terms?
Hyper = above normal. Hypo = below, less than normal.
What are compounds ?
A compound is a substance consisting of two or more elements chemically combined in a fixed ratio. They differ from mixtures consisting of two or more substances physically mixed without chemical bonding. Compounds have their own physical and chemical properties that differ from those of individual elements. For example, the compound water (H2O) has different properties (boiling point, density, solubility, etc.) than its components hydrogen (H2) and oxygen (O2).
Compounds are formed by chemical reactions in which atoms of different elements combine to form new substances. The formation of a compound can be represented by a chemical formula that indicates the type and number of atoms in the compound.
To know more about compounds , click the link below ;
brainly.com/question/26487468
#SPJ4
What reaction is KClO3 → KCl O2?
This reaction is a decomposition reaction, meaning that KClO3 is breaking down into two separate substances: KCl and O2.
What is decomposition reaction?
Decomposition reactions are chemical reactions in which a single compound breaks down into two or more simpler substances. These reactions are caused by the addition of energy, often in the form of heat, light, or electricity. Examples of decomposition reactions include the breakdown of hydrogen peroxide into water and oxygen, or the breakdown of water into hydrogen and oxygen. Decomposition reactions often involve the formation of new bonds between the reactants, resulting in the formation of new molecules.
Therefpre, This reaction is a decomposition reaction, meaning that KClO3 is breaking down into two separate substances: KCl and O2.
To learn more about decomposition reaction
Here: https://brainly.com/question/30398955
#SPJ4
What is the M z of the molecular ion peak?
The mass spectrum is typically depicted as a vertical bar graph, with the length of the bar indicating the ion's relative abundance and each bar representing an ion with a particular mass-to-charge ratio (m/z).
A peak's M z value in the mass spectrum is what?72 indicates the largest ion passing through the mass spectrometer, and it is reasonable to assume that this is the molecular ion because 72 is the largest m/z value. As a result, the compound has a relative formula mass of 72. Note: This assumes that the ion has a charge of 1+.
What exactly are molecular ion peak and base peak?The spectrum's base peak is always the highest peak. The most prevalent and abundant ion is symbolized by the base peak. The peak that represents the heaviest ion is the molecular ion peak. On the mass spectrum, this peak has the highest m/z ratio, but it does not necessarily indicate the most abundant ion.
Learn more about molecular ion peak:
brainly.com/question/20815173
#SPJ4
he most common ion formed by oxygen is called the oxide ion. Which species shows the correct charge of the oxide ion? Choose one:
a. O³⁺
b. O²⁺
c. O⁺
d. O⁻
e. O²⁻
f. O³⁻
The most common ion formed by oxygen is called the oxide ion. The species shows the correct charge of the oxide ion, the correct option is e. O²⁻.
The most common atomic ion formed from the oxygen is the O²⁻. This ion called as the oxide ion. The atomic number of the oxygen atom is 8. The electronic configuration of oxygen is as follows :
The electronic configuration of the oxygen = 1s² 2s² 2p⁴ .
Therefore by gaining the two electrons, oxygen will able to complete the octet and become more stable.
Thus, O²⁻ is the most common ion formed by the oxygen.
To learn more about oxide ion here
https://brainly.com/question/30300416
#SPJ4
A student is conducting a laboratory experiment with sulfur hexafluoride. However, the student did not complete the required pre-laboratory notes.Compound: SF6Mass: 235.7 gWhich selection would help the student complete the requisite notes?a. 1.6 moles, 9.72 x10^23 particlesb. 0.62 moles, 9.72 x10^23 particlesc. 1.6 moles, 2.65 x10^22 particlesd. 0.62 moles, 2.65 x10^22 particles
To determine the number of moles of SF6, the student can use the formula:
moles = mass ÷ molar mass
Where the molar mass of SF6 is 235.7g/mol.
So, the number of moles would be:
moles = 235.7g ÷ 235.7g/mol = 1.00 mol
To find the number of particles in SF6, the student can use Avogadro's number, which is 6.022 x 10^23 particles/mol. So, the number of particles would be:
particles = moles x Avogadro's number = 1.00 mol x 6.022 x 10^23 particles/mol = 6.022 x 10^23 particles.
Therefore, the correct option is: a. 1.6 moles, 9.72 x10^23 particles
Learn more about Avogadro's number here: https://brainly.com/question/11907018
#SPJ4
There are two different compounds with the molecular formula c2h6o. One of this has a much higher boiling point than the other. Write the name of the compound with the lower boiling point.
Ethanol and methoxymethane are the two significant isomers of the chemical C2H6O. (or dimethyl ether). Beverages like ethanol possess functional groups called OH or hydroxyl groups. Methoxymethane is an ether, and the R-O-R' ether bond functions as the functional group.
The grouping 6A elements (oxygen, arsenic, selenium, and tellurium) produce more strongly polar hydrides even though they possess two free electrons for bonding. As a result, the fluid's intermolecular attraction is stronger, raising its boiling point. Water has the greatest boiling point between all materials owing because of its remarkable irregular shape and strong electronegative energy.
The chemical element with the lowest boiling is hydrogen, whereas the one with the highest boiling temperature is tungsten. Of all the elements, helium has the highest boiling point.
To know more about Chemical click here
brainly.com/question/29447577
#SPJ4
A 1kg tub of frozen vanilla ice cream is left in the sun and melts. Identify the mass the ice cream after it has melted.
Answer: 1kg
Explanation:
The Ice cream hasn't lost any mass it has just turned into liquid form.
The 1 kg mass of frozen vanilla ice cream when completely melts into its liquid form, equal mass of liquid is formed there. Melting does not change the mass of the frozen ice cream.
What is melting ?Melting is the physical change by which a substance undergo the physical transition from solid to liquid. The temperature at which this phase change occurs for that substance is called its melting point.
The melting point of a substance depends on the bond type, pressure ,temperature and presence of impurities. Any physical transition doe not change the mass of the substance.
Therefore, the mass of a substance does not change during melting. Hence, when 1 kg of frozen ice cream is melted completely it forms 1 kg of water then.
Find more on melting:
https://brainly.com/question/12499685
#SPJ2
now lets see how evaporation affects conecentration add 10 shakes of solute to 1/2 of solute
Evaporation can increase the concentration of a solution by removing the solvent (e.g. water) and leaving behind the solute.
In the scenario described, adding 10 shakes of solute to 1/2 of solute will increase the concentration of the solute.
However, the magnitude of the concentration change will depend on the properties of the solute and solvent, as well as other factors such as temperature and atmospheric conditions.
If the solution is left exposed to evaporation, the concentration will continue to increase until the solute can no longer dissolve in the remaining solvent.
To know more about Evaporation click on the link below:
https://brainly.com/question/5019199#
#SPJ11
Which of the following is not a lab safety rule?
Always wear your goggles!
Tie hair back when working with flames.
Know where all safety equipment is.
Dispose of all chemicals down the sink.
The following is not a lab safety rule is Dispose of all chemicals down the sink.
Option D is correct.
What is the fundamental rule for laboratory safety?When working with dangerous substances in the laboratory, you should always wear long pants, safety glasses, and a lab coat. When working in the laboratory, the best way to protect yourself is to wear the right protective gear. Before leaving the laboratory, wash your hands and remove your personal protective equipment.
Why are lab regulations essential?Since pretty much every lab utilizes synthetics or the like, compound security rules are an unquestionable requirement. Employees can avoid spills, other accidents, and damage to the environment outside the lab by adhering to these policies.
Learn more about lab rules:
brainly.com/question/26283939
#SPJ4
The structural formula of magnesium chloride is represented as ?
Ionic halides, like magnesium chloride, are essentially salts that are very soluble in water. Both anhydrous and numerous hydrated crystal forms of this chemical are available.
What is the chemical formula for magnesium chloride?Magnesium has a propensity to lose two electrons during in the reaction between it and chlorine. It has a +2 charge. To complete magnesium's octoate, however, chlorine atom atoms are required to capture two of its electrons.
How does magnesium chloride work?For students, the magnesium formula is essential. They ought to be educated and aware of it. One of the found naturally inorganic compounds, magnesium chloride has a wide range of uses in business and the medical profession. It is also a crucial mineral for people.
To know more about magnesium chloride visit:
https://brainly.com/question/15296925
Ionic halides, like magnesium chloride, are essentially salts that are very soluble in water. Both anhydrous and numerous hydrated crystal forms of this chemical are available.
What is the chemical formula for magnesium chloride?
Magnesium has a propensity to lose two electrons during in the reaction between it and chlorine. It has a +2 charge. To complete magnesium's octoate, however, chlorine atom atoms are required to capture two of its electrons.
How does magnesium chloride work?
For students, the magnesium formula is essential. They ought to be educated and aware of it. One of the found naturally inorganic compounds, magnesium chloride has a wide range of uses in business and the medical profession. It is also a crucial mineral for people.
To know more about magnesium chloride visit:
brainly.com/question/15296925
#SPJ4
and mechanical equipment, etc. created a problem for commercial farmers?
Commercial farmers now face a challenge as a result of efficient farming techniques, fertilizers, machinery, etc. When the supply rises, prices drop, and profits drop overall.
The release of enormous amounts of manure, pesticides, antibiotics, and growth hormones into water sources contributes significantly to pollution. Both aquatic ecosystems and human health are at risk from this. Commercial farmers now face a challenge as a result of efficient farming techniques, fertilizers, machinery, etc. When the supply rises, prices drop, and profits drop overall. The production of food largely for sale off the farm is known as commercial agriculture. mostly used in industrialized nations. It differs from subsistence agriculture in that it is more mechanized, has a lower labor force participation rate, and has larger farms.
Learn more about Commercial farmers
brainly.com/question/14201310
#SPJ4
Estimate the increase in pressure (in psi) required to decrease a unit volume of mercury by 0.6%. psi the tolerance is +/-2%
We may use the pressure change with regard to volume change equation to determine the increase in pressure necessary to decrease the volume of mercury by 0.6%: ΔP = -K * ΔV / V Where K denotes.
the bulk modulus of mercury, V the volume change, and V the initial volume. Mercury has a bulk modulus of around 140,000 psi. Assume the initial volume of mercury is one unit. The volume change would then be -0.006 units. When we plug these values into the equation, we get: ΔP = -140,000 * (-0.006) / 1 ΔP = 840 psi Because the tolerance is +/- 2%, the predicted pressure rise might range from 816 psi to 864 psi. the pressure change with regard to volume change equation to determine the increase in pressure necessary to decrease the volume of mercury by 0.6%: ΔP = -K * ΔV / V Where K denotes.
learn more about Mercury here:
https://brainly.com/question/4025230
#SPJ4
12. A container holds 0.52 moles of chlorine gas, 0.38 moles of hydrogen gas, and 0.47 moles
of argon gas. If the total pressure of the gases is 5.8 atm, what is the partial pressure of each
gas?
Answer:
The partial pressures of chlorine gas, hydrogen gas, and argon gas in the container are 2.16 atm, 1.60 atm, and 1.96 atm respectively.
Explanation:
The partial pressure of a gas in a mixture is proportional to the number of moles of that gas present. So, the partial pressure of chlorine gas (PC) can be calculated as:
PC = (0.52 moles of chlorine / (0.52 + 0.38 + 0.47)) * 5.8 atm = 0.52 * 5.8 / 1.37 = 2.16 atm
Similarly, the partial pressure of hydrogen gas (PH) can be calculated as:
PH = (0.38 moles of hydrogen / (0.52 + 0.38 + 0.47)) * 5.8 atm = 0.38 * 5.8 / 1.37 = 1.60 atm
And the partial pressure of argon gas (PA) can be calculated as:
PA = (0.47 moles of argon / (0.52 + 0.38 + 0.47)) * 5.8 atm = 0.47 * 5.8 / 1.37 = 1.96 atm
So, the partial pressures of chlorine gas, hydrogen gas, and argon gas in the container are 2.16 atm, 1.60 atm, and 1.96 atm respectively.