If the mother is Rh negative and her child is Rh positive she will form antibodies that may kill her second child
Found in the bone marrow
The Rh protein but not the A or the B proteins
Why must mothers be aware of the rhesus factor?Mothers must be aware of the rhesus factor in order to prevent a potentially serious condition called Rh incompatibility. The rhesus factor, also known as the Rh factor, is a protein that is found on the surface of red blood cells.
If a woman who is Rh-negative (does not have the Rh factor) becomes pregnant with a fetus who is Rh-positive (does have the Rh factor), there is a risk that the mother's immune system will recognize the Rh factor on the fetus's red blood cells as a foreign substance and produce antibodies against it.
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what is the number of moles in 3.88 g of NO2
Answer:
0.0843 moles
Explanation:
The molar mass of NO2 is 46.0055 g/mol
To solve for the number of moles you will need to use stoichiometry.
[tex]\frac{3.88g}{}*\frac{1 mol}{46.0055 g} =0.084338 moles[/tex]
Use sig figs to round.
what is the molarity of an aqueous solution that is 14.3% sucrose by mass? sucrose is c12h22o11 (molar mass 342 g/mol). the density of the solution is 1.05 g/ml
The molarity of an aqueous solution that is 14.3% sucrose by mass is 0.039 M.
What is molarity ?The term molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of a solution.
Given:
molar mass of sucrose = 342 g/mol
the density of the solution = 1.05 g/ml
1 mole of sucrose = 342.3 grams.
Now, Divide 342.3 by 14.3 , which will give you 0.041. This is the number that will go in the numerator position of your equation.
Now, divide 0.041 by 1.05 (the number of liters), which will equal 0.039 M
Thus, the molarity of an aqueous solution that is 14.3% sucrose by mass is 0.039 M.
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if the rate of appearance of o2 is equal to 2.60 mol/min at a particular moment, what is the rate of disappearance of n2o5 at that moment?
The rate of disappearance of N2O5 at that moment is equal to the rate of appearance of O2, which is 2.60 mol/min. This can be calculated using the following equation:
Rate of Disappearance of N2O5 = (2 moles of O2 produced per mole of N2O5 consumed) x (rate of appearance of O2)
Therefore, the rate of disappearance of N2O5 at that particular moment is equal to 2.60 mol/min.
The rate of disappearance of N2O5 is determined by the rate of the reaction, which is determined by the temperature of the reaction environment, the concentrations of the reactants and products, and the activation energy of the reaction.
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how many electrons does each sphere contain? (the atomic mass of aluminum is 26.982 grams per mole, and its atomic number is 13.)
From the given information each sphere of aluminium contian 13 electrons in it.The sphere of aluminium is made of aluminium or of different alloys of aluminium. Aluminium alloy balls, malleable, ductile and non-magnetic, are preferred where lightweight materials are needed that have good surface finishing or wear resistance.
The number of electrons in a sphere of aluminum can be determined by knowing the atomic number of aluminum, which is 13. The atomic number represents the number of protons in the nucleus of an atom and is also equal to the number of electrons in a neutral atom.
When an aluminium sphere is dipped in water and the temperature of water is increased, the aluminium will start expanding leading to increase in its volume.
So, each sphere of aluminum would contain 13 electrons.
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which of the cations in the table above would you predict would form iodides (compounds with iodine, i) having the cesium chloride (cscl) structure? group of answer choices al3 ba2 ca2 cs fe2 fe3 k mg2 mn2 na ni2 si4 ti4
The cations in the table above that would form iodides having the CsCl structure are Na, K, and Ca2+.
What is structure?Structure is a system of organization or arrangement of parts that creates a whole. It refers to the way a system or object is arranged or put together. Structures can be found in both physical and abstract forms, such as language, physical objects, and organizations. Physical structures include buildings, bridges, and other forms of architecture. Abstract structures include computer programs, laws, and social organizations. Structures are used to create order and stability, and can often be used to solve problems. In many cases, structure can be used to create something that is efficient, functional, and aesthetically pleasing.
Based on the cesium chloride (CsCl) structure, the cations that would form iodides having the CsCl structure would be those that have a +1 charge, such as Na+, K+, and Ca2+. Therefore, the cations in the table above that would form iodides having the CsCl structure are Na, K, and Ca2+.
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5 If you added some washing powder to sea water, would the pH go up, down or stay the same? Explain your answer.
The pH level of the sea water will goes up if we made sea water with some washing powder.
Alkali in detergents can upset the harmony of aquatic habitats by raising the pH of the water and resulting in chorological changes. Sometimes the chelating is really toxic: Because it forms exceptionally stable compounds with metals like iron or hemoglobin, EDTA (ethylene diamine tetra acetic acid) is poisonous. Bleaching agents, such as bleach and peroxides, are potent antioxidants that may also damage organic matter and produce highly harmful free radicals.
Detergents reduce the oxygenation of the water by creating foams. Their surfactant qualities enable them to disperse hazardous chemicals in aquatic environments by dissolving the molecules. Some detergents are strongly suspected of interfering with the metabolism of animals, particularly frogs (Anura, Urodela), fish, and humans. These pesticides are known as hormone-mimics (endocrine disruptors). They may result in fish and mollusk sex changes, a sharp reduction in frog populations, and a decline in human spermatogenesis.
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If car A is traveling 20 mph and is hit from behind by Car B (approximately the same mass) traveling 60 mph, what will happen to the acceleration of car A immediately after the crash?
Car A will decelerate.
Car A will not accelerate.
Car A will accelerate in the direction of motion.
Car A will spontaneously combust from impact.
Car A will spontaneously combust from impact. Therefore, the correct option is option D among all the given options.
What is acceleration ?Acceleration is the rate upon which velocity varies over time, both in terms of speed and direction. A point or object travelling in a straight path is accelerated if something accelerates or decelerates.
Regardless of whether the speed remains constant, motion on such a circle gets accelerated because the orientation is always changing. Both redistribution to acceleration in all other types of motion. If car A is traveling 20 mph and is hit from behind by Car B (approximately the same mass) traveling 60 mph, Car A will spontaneously combust from impact.
Therefore, the correct option is option D.
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Answer:
Car A will accelerate in the direction of motion.
Explanation:
If a car driving slowly was hit from behind by a car going 3 times its speed, car A will be pushed forward in result.
What mass of hydrogen gas is produced from complete reaction of 2.00 g of sodium metal with excess water? The only other product of the reaction is sodium hydroxide.
Group of answer choices
351 mg
87.7 mg
43.8 mg
175 mg
Answer:
43.8 mg
Explanation:
.....................
43.8 mg is the mass of hydrogen gas which is produced from complete reaction of 2.00 g of sodium metal with excess water.
What is hydrogen gas?Methane, often known as natural gas, may be replaced with hydrogen, a clean fuel. It is the most prevalent chemical element and is thought to make about 75% of the universe's mass. Many hydrogen atoms may be found in water, plants, animals, and, of course, people here on earth.
While it is found in almost all living organisms' molecules, it is extremely rare as a gas, with a volumetric concentration of less than a part per million. A number of sources, including natural gas, nuclear energy, biogas, and renewable energy sources like sun and wind, can be used to manufacture hydrogen.
2Na + 2H[tex]_2[/tex]O [tex]\rightarrow[/tex] 2NaOH +H[tex]_2[/tex]
moles of sodium = 2/23=0.08moles
the mole ratio between sodium and hydrogen is 2:1
moles of hydrogen =0.04moles
mass of hydrogen ==0.04moles×2=43.8 mg
Therefore, 43.8 mg is the mass of hydrogen gas.
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Peptides can be separated using an ion-exchange column based on their isoelectric (pi) values. At which ph values would two different peptides, one with a pi of 5. 0 and the other with a pi of 9. 2, bind to a cation- and anion-exchange column? each peptide may be capable of binding to each column at more than one ph value
pH values would allow two distinct peptides—one having a pi of 5.0 and the other having a pi of 9.2—to bind to a cation- and anion-exchange column. When pH equals 10.8, pH > pI (A) and pI (B):
Proteins that have a net negative charge will bind to an anion exchange column when pH > pI.
When pH pI, the protein will bind to the cation exchange column because it has a net positive charge.
Given: Peptide B: pI = 9.0 Peptide A: pI = 5.2
1) At pH = 3.5, the equation is pH pI (A) and pI (B). The cation exchange column is the sole place where A and B will both bind.
2) The pI (A) will bind to anion exchange at pH = 6.5.
B will bind to the cation exchange in the pH pI range.
pH = 10.8 pH > pI (A) and pI (B): Both will bind to the anion exchange column exclusively.
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scientists trying to calculate the half-life (the time it takes for half of a sample to decay) of phosphorus-32, took measurements of the sample once every day for five days. on what day should about half of the original amount of p-32 remain? (round answer to the nearest day.)
Day at which one-tenth of the original amount of P-32 remains i.e 10 g, t is 47 days.
The equation of above graph is y = -0.049x + 4.603 (y = mx +b)
Slope, average decay constant, m = -k = -0.049
decay constant, k = 0.049 /day
or it can be calculated by the integrated law equation :
ln [A] = -kt + ln [A]o
t = half life = t0.5
[A]o = 100 g
[A] at half-life = 100 g/2 = 50 g
k = 0.049/day
ln 50 = -0.049t0.5 + ln 100
3.912 = -0.049t0.5 + 4.605
3.912-4.605 = -0.049t0.5
-0.693 = -0.049 t0.5
half-life , t0.5 = -0.693/-0.049 = 14 days
day at which one-tenth of the original amount of P-32 remains i.e 10 g
ln [A] = -kt + ln [A]o
[A]o = 100 g
[A] = 10 g
k = 0.049/day
ln 10 = -0.049t+ ln 100
2.302 = -0.049t + 4.605
2.302-4.605 = -0.049t
-2.303 = -0.049 t
Day at which one tenth of original amount of P-32 is remained i.e 10 g , t = -2.303/-0.049 = 47 days
The slope of a line is a degree of its steepness. Mathematically, the slope is calculated as "upward push overrun" (trade-in y divided by using trade-in x).A numerical measure of a line's inclination relative to the horizontal. In analytic geometry, the slope of any line, ray, or line phase is the ratio of the vertical to the horizontal distance among any points on it (“slope equals upward push over run”).
The slope formulation is used to calculate the steepness or the incline of a line. The x and y coordinates of the strains are used to calculate the slope of the lines. it is the ratio of the alternatives within the y-axis to the change within the x-axis. The slope of a line is its vertical trade divided by means of its horizontal change, also referred to as upward thrust overrun. if you have 2 factors on a line on a graph the slope is the alternate in y divided by using the change in x.
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pls help with chemistry!
a.
The limiting reactant is O2
b.
The amount of excess reactant (H2) that remains is 0 grams
c.
The amount of H2O produced is 40 grams.
What is a limiting reactant?The limiting reactant in a chemical reaction is described as a reactant that is totally consumed when the chemical reaction is completed.
the reactant that runs out first and determines the amount of product that can be produced.
To find the limiting reactant, we do the following:
From 20 grams of H2, we can produce 40 grams of H2O.
From 96 grams of O2, we can produce 48 grams of H2O.
we know that the amount of H2O produced from O2 is less than that produced from H2, O2 is the limiting reactant.
The amount of excess reactant (H2) that remains is 20 grams - 40 grams = 0 grams.
In conclusion, the amount of H2O produced is 40 grams.
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From the balanced equation of the reaction, the mole ratio of H2 to O2 is 2:1.
Mole of 20 grams H2 gas = 20/2 = 10 moles
Mole of 96 grams O2 gas = 96/32 = 3 moles
Thus, the limiting reactant is O2 gas.
Stoichiometric mole of H2 gas = 2 x 3 = 6 moles
Excess mole of H2 gas = 10 - 6 = 4 moles
Mass of 4 moles H2 gas = 4 x 2 = 8 grams
Equivalent mole fo H2O formed = 3 x 2 = 6 moles
Mass of 6 moles H2O = 6 x 18 = 108 grams.
In summary:
The limiting reactant is O2The remaining excess reactant is 8 gramsThe amount of H2O produced is 108 gramsMore on stoichiometric problems can be found here: https://brainly.com/question/14301905
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calculate the volume in liters of a 0.35m aluminum sulfate solution that contains of aluminum sulfate
The volume in liters of a 0.35m aluminum sulfate solution that contains of aluminum sulfate is 119.75 liters.
What is aluminum sulfate?
Aluminum sulfate is an inorganic compound with the molecular formula Al2(SO4)3. It is a white crystalline solid that is soluble in water, and it is most commonly used as a coagulating agent in water treatment and paper production. It is also used as an additive in various food products, in leather tanning, and as a pesticide.
The volume of a 0.35m aluminum sulfate solution is calculated using the molarity equation: V = (M x n) / c
where V is the volume, M is the molarity, n is the amount of solute (in moles) and c is the concentration (in moles/liter).
In this case, we are given the molarity of 0.35m and the concentration of aluminum sulfate (Al2(SO4)3).
To do this, we can use the molar mass of Al2(SO4)3, which is 342.14 g/mol.
Therefore, the amount of aluminum sulfate in moles is:
n = 0.35 x 342.14 = 119.75 mol
Now that we know the amount of aluminum sulfate in moles, we can calculate the volume of the solution. The equation is:
V = (M x n) / c
V = (0.35 x 119.75) / 0.35 = 119.75 liters
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Consider the titration of 30. 0 ml of 0. 050 m nh3 with 0. 025 mhcl. Calculate the ph after the following volumes of titrant have been added
After 15.0 mL of HCl has been added (half the volume of the titrant), the pH = 4.75 After 30.0 mL of HCl has been added (the entire volume of the titrant), the pH is around 1. the final ph value after the given volumes of titrant have been added is 1.
To calculate the pH after a certain volume of titrant has been added in a titration of 30.0 mL of 0.050 M NH3 with 0.025 M HCl, we need to find the concentration of NH3 and HCl at each stage of the reaction. The reaction between NH3 and HCl can be represented as:
NH3 + HCl -> NH4Cl
At the beginning of the titration, the concentration of NH3 is 0.050 M, and the concentration of HCl is 0. The addition of HCl will cause the concentration of NH3 to decrease and the concentration of HCl to increase. At the half-equivalence point (when exactly enough HCl has been added to react with half of the NH3), the concentration of NH3 is 0.025 M, and the concentration of HCl is also 0.025 M. At this point, the pH can be calculated using the Henderson-Hasselbalch equation:
pH = pKa + log([NH3-]/[NH4+]) where pKa = 4.75 for the NH3/NH4+ buffer system, and [NH3-] and [NH4+] are the concentrations of the unionized NH3 and the ammonium ion, respectively.
At this half-equivalence point, the pH = 4.75 + log(0.025/0.025) = 4.75
As the HCl is added in excess, the pH of the solution will continue to decrease until it reaches a value of around 1.
Here's a summary of the pH values after the addition of different volumes of HCl:
After 15.0 mL of HCl has been added (half the volume of the titrant), the pH = 4.75
After 30.0 mL of HCl has been added (the entire volume of the titrant), the pH is around 1.
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The complete question is :
A 30. 0 ml solution of 0. 050 m nh3 was titrated with 0. 025 mil. After adding the following volumes of titrant, determine the pH.
a - 15ml
b- 30ml
the observation that 10 g of hydrogen gas always combines with 80 g of oxygen gas to form 90 g of water, even when there is more than 80 g of oxygen present in the reaction container, illustrates the law of
The observation that 10 g of hydrogen gas always combines with 80 g of oxygen gas to form 90 g of water, even when there is more than 80 g of oxygen present in the reaction container, illustrates the law of conservation of mass.
The law of conservation of mass states that in a chemical reaction, the total mass of the reactants must equal the total mass of the products. This law holds true for all chemical reactions, regardless of the amount of reactants or products present. In this reaction between hydrogen and oxygen, the mass of the reactants (10 g hydrogen + 80 g oxygen = 90 g) is always equal to the mass of the product (90 g water), demonstrating the law of conservation of mass.
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Sodium is a very reactive metal. Would a reaction take place between magnesium and sodium chloride?
Answer:
Yes
Explanation:
The reaction will take place as follows: There will be the reaction taken place between magnesium and sodium chloride react to give magnesium chloride and Sodium, as because sodium is a reactive metal.
Answer: Yes
Explanation: The reaction will take place as follows: There will be the reaction taken place between magnesium and sodium chloride react to give magnesium chloride and Sodium, as because sodium is a reactive metal.
generally speaking, are fatty acid molecules polar or nonpolar or both? what type of forces hold them together in the solid? (1 pt) g
Fatty acids consist of long hydrocarbon chains attached to a carboxyl group. Fatty acids are the structural components of fats, oils, and lipids.
London forces (also called London dispersion forces or simply dispersion forces) are the attractive forces between atoms and molecules. London forces are part of the intermolecular forces that occur between nonpolar molecules and nonpolar molecules.
Saturated fatty acids are generally solid at room temperature. Stacked together produce maximum London dispersion force.
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Classify the picture below by placing the correct label in the blank:
E = 1 type of element
C = 1 type of compound
MOE = mixture of elements
MOC = mixture of compounds
MOEC = mixture of elements and compounds
The correct label for the picture given is MOC = mixture of compounds.
How to know a mixture of compounds ?A compound is made up of atoms from various elements that have been chemically mixed in a specific ratio. Different elements are found in compounds in a predetermined order and set ratio thanks to chemical bonding.
Different types of compounds are created as a result of several changes in the chemical characteristics and structures. However, whether they are present in any composition or not, the elements normally exist in a constant ratio.
This is a compound because the atoms shown are of different elements - as shown by their colors - and are yet bound together. They are also bound together in different ratios which shows there are different compounds in a mixture.
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the combustion of 40.5 mg of a compound extracted from the bark of the sassafras tree and known to contain c, h, and o produces 11.0 mg co2 and 22.5 mg of h2o. the molar mass of the compound is 162 g.mol. what is the molecular formula?
If the combustion of 40.5 mg of a substance taken from the bark of the sassafras tree and known to include c, h, and o results in 11.0 mg co2 and 22.5 mg of water, the molecular formula is C5H502 = C10H10O2.
The amount of substance removed from the sassafras tree's bark was 40.5 mg, while the amount of CO2 produced was 110.0 mg.
obtained water mass = 22.5g
Calculation of C, H, and O percentages
12 g of Carbon is present in 44 g of CO2. Similarly 2 g of H is present in 18 g of water. Using this we calculate
Percentage of C = 12/44 x Mass of CO2 / Total mass of Compound X 100 = 12/44 x 110.0/40.5 x 100 = 74.07
Percentage of H =2/18 x Mass of H2O / Mass of compound = 2/18 x 22.5/40.5 x 100 = 6.17
Percentage of O =100-6.17-74.07=19.76 ( As compound contains only C H and O)
Calculation of emperical formula
Element Percentage No of Atoms Relative atomic ratio whole no . composition ratio
C 74.07 74.07/12 = 6.1725 6.1725/1.235 = 4.9975 5
H 6.17 6.17/1 = 6.17 6.17/1.235 = = 4.9959 5
O 19.76 19.76 /16 = 1.235 1.235/1.235 = 1 1
Hence, Emperical Formula is C5H50
Molecular mass of compound = 162g/mol
Emperical mass = 60+5+16=81g/mol
So multiplying factor (n) = Molar mass/emperical mass= 162/81=2
So Molecular formula= C5H502 = C10H10O2
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If 100 grams of O2 are reacted, how many grams of P4 will also be reacted?
If 100 grams of Oxygen are reacted, 77.5 grams of P4 will also be reacted.
Calculating the number of moles in 100g of oxygen gas.
Mass of oxygen = 100 g
Molar mass of oxygen = 32.0 g/mol
Thus, moles of oxygen are -
Moles of oxygen = (Mass of oxygen/ Molar mass of oxygen)
Moles of oxygen = (100/32.0)
Moles of oxygen = 3.125 moles.
Here, the 5 moles of Oxygen need 1 mole of P4.
Moles of Phosphorous = 3.125/5 = 0.625 moles.
Therefore, from moles of P4 and molar mass of P4 = (124.0 g/mol)
Mass of Phosphorous = 0.625 * 124.0 = 77.5g
Hence, 77.5 grams of P4 will react with 100 grams of Oxygen.
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calculate the moles of ammonia present in a 6.364 g sample of ammonia, which has a molar mass of 17.030 g/mol.
The moles of ammonia present in a 6.364 g sample of ammonia are 0.373 moles.
The number of moles(n) are the ratio of mass(m) to the molar mass(M). Mole is the unit of amount in chemistry. It is SI unit and represented by "mol". It is expressed as follows-
n= m/M
The given parameters are-
m=6.364 g
M= 17.030 g/mol
The number of moles can be calculated as follows-
n= 6.364/ 17.030
=0.373
Thus, the number of moles of ammonia are 0.373 moles.
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how many of the most important technological catalysts for change shown in data saource 4 were the hrd's required to select when completing the survey deloitte
Big data and cloud technology were the most important change agents in data sources. Big data has a significant impact on technology.
What is cloud technology?Cloud technology refers to the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale. Cloud technology allows users to access these services remotely from a cloud provider's servers, instead of managing the infrastructure and resources required to run the services on their own.
There are three primary types of cloud services: infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). IaaS provides virtualized computing resources over the internet, while PaaS provides a platform for developing, running, and managing applications and services, and SaaS delivers software applications over the internet, on a subscription basis.
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Full tablet Reaction time = 34. 5 sec
Reaction rate = mg/L/sec
Eight pieces Reaction time = 28. 9 sec
Reaction rate = mg/L/sec
Tiny pieces Reaction time = 23. 1 sec
Reaction rate = mg/L/sec
145
173
216
The rate at which a chemical response proceeds. it's far often expressed in phrases of both the awareness (quantity in line with unit extent) of a product that is shaped in a unit of time or the attention of a reactant that is eaten up in a unit of time.
The response fee or rate of response is the velocity at which a chemical reaction takes location, described as proportional to the increase within the concentration of a product in step with unit time and to the lower within the awareness of a reactant according to unit time. response quotes can vary dramatically. charge of response is normally given by the change in awareness with respect to time so we will outline the unit of charge of response as awareness/time in which the unit of concentration is mol/L and let us think time is in seconds then units of charge of reaction will (mol/L)/sec
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in which phase transition the entropy will increase? group of answer choices condensation freezing all mentioned processes sublimation deposition
The phase transitions in which the entropy will increase are condensation, sublimation, and freezing. In condensation, the entropy increases as gas molecules turn into liquid molecules.
What is entropy ?Entropy is a measure of disorder in a system. It is a measure of randomness and unpredictability. Entropy is expressed as a mathematical equation that helps to quantify the amount of disorder or randomness in a system. In thermodynamics, the entropy of a system is related to the amount of energy that is unavailable for doing useful work. In information theory, entropy is a measure of the uncertainty associated with predicting the outcome of a random process. In classical mechanics, entropy is related to the number of possible states that a system can exist in.
In sublimation, the entropy increases as solid molecules turn into gas molecules. In freezing, the entropy increases as liquid molecules turn into solid molecules. Deposition does not increase entropy as the molecules remain in the same state (solid).
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Lead is melted and is poured into a mold to make fishing weights
Lead is melted and is poured into a mold to make fishing weights. This is an example of a physical change.
The material involved in a physical change has the same structural properties before and after the change. Texture, shape, temperature, and a change in the state of matter are examples of various physical changes. A substance's texture changes how it feels, and vice versa. For instance, a block of wood may seem rough to the touch, but smoothing the surface with sandpaper makes the wood feel smooth to the touch.
Examples of physical change include changes in the composition or size of materials. Transitions between states, such as from a solid to a liquid or a liquid to a gas, are examples of physical transformations. Some of the processes that result in physical changes include cutting, bending, dissolving, freezing, boiling, and melting.
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the complete question is
Lead is melted and is poured into a mold to make fishing weights. This is an example of a________change.
1) physical
2)chemical
how does increasing the height of an object affect its mechanical energy
On increasing the height of an object mechanical energy gets converted to kinetic energy.
What is kinetic energy?
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
The same amount of work is done by the body when decelerating from its current speed to a state of rest. Formally, a kinetic energy is any term in a system's Lagrangian which includes a derivative with respect to time.
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an experimental plot of ln(pvap) vs. 1/t is obtained in lab for an unknown liquid. the slope of the best-fit line for the graph is -4830 k. what is the enthalpy of vaporization for the liquid in kj/mol?
The enthalpy of vaporization for the liquid is 40.7 kJ/mol.
The slope of the graph, -4830 K, can be used to calculate the enthalpy of vaporization (ΔHvap) using the Clausius-Clapeyron equation:
ΔHvap = -RT^2 * dln(p) / d(1/T)
Where R is the gas constant (8.314 J/mol.K), T is the temperature in kelvin and dln(p) / d(1/T) is the slope of the graph.
By substituting the values, we get:
ΔHvap = -8.314 * (1/1000) * (-4830) = 40.7 kJ/mol
So, the enthalpy of vaporization for the liquid is 40.7 kJ/mol.
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Please help with my stoichiometry……..
There are 18.45 grammes in 0.58 moles of oxygen.
What is mole?In chemistry, a mole is a unit of measurement that is used to express how much a chemical substance is present. To measure amounts in molar mass, chemical reactions, and solutions, one mole of a substance is equivalent to 6.02214076 x 1023 of that substance's atoms, ions, or molecules.
How do you determine it?The given equation describes the reaction between oxygen and potassium chlorate (KClO3) (O2).
The following computation can be done to convert 18.45 grammes of O2 to moles:
32 grammes are equivalent to one mole of oxygen.
18.45 g / 32 g/mol is equal to 0.5765 moles O2.
Thus, 0.58 moles of oxygen are equal to 18.45 grammes of oxygen.
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as an acid sulfuric acid reacts with most bases to give the corresponding
As an acid sulfuric acid reacts with most bases to give the corresponding sulfate.
What is reaction ?
A chemical reaction is the transformation of one or more chemicals, known as reactants, into one or more new compounds, known as products. The change in concentration of any of the reactants or products per unit of time can be used to determine the rate or speed of a reaction. It is determined by the equation rate=time + concentration.
What is ion ?
Atoms or groups of atoms with an electric charge are referred to as ions. Cations are positive-charged ion particles. Anions are ion types that have a net negative charge. The body contains ions of several common chemicals. Examples that are frequently used are sodium, potassium, calcium, chloride, and bicarbonate.
Therefore, As an acid sulfuric acid reacts with most bases to give the corresponding sulfate.
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How many base units are there in the code for one amino acid?
There are three base units in the code for one amino acid.
What are the 3 bases that code for an amino acid?
Codons are made up of any triplet combination of the four nitrogenous bases adenine (A), guanine (G), cytosine (C), or uracil (U). Of the 64 possible codon sequences, 61 specify the 20 amino acids that makeup proteins and three are stop signals.
What is the 3 base code?
A three-base sequence in DNA or RNA is known as a codon. The codes in the coding strand of DNA and in messenger RNA aren't, of course, identical, because in RNA the base uracil (U) is used instead of thymine (T).
Why do codons have 3 bases?
The more bases there are per codon the more information you can code for. There are only 22 different amino acids, in consequence, we need a minimum of 3 bases per codon.
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what mass of carbon dioxide would be produced if 100 g of methane is completely oxidized to carbon dioxide and water? ch4 mw
There would be 274 grams carbon dioxide produced if 100 g of methane is completely oxidized to carbon dioxide and water.
First we should write the chemical reaction for methane and oxygen combustion
CH₄ + 2O₂ ⇒ CO₂ + 2H₂O
Then we should calculate the moles of methane
Moles of methane = mass methane/ mass molar
Moles of methane = 100 g / 16 g /moles
Moles of methane = 6.25 moles
from the question we know that methane completely oxidize so the limiting reactant is methane.
From the balance reaction we can conclude that 1 moles of methane reacted with 2 moles of oxygen produce 1 moles of carbon dioxide and 2 moles of water.
Then with unitary method we can calculate the moles of carbon dioxide produced
Moles carbon dioxide = 1/1 x moles of methane
Moles of carbon dioxide = 1/1 x 6.25 moles
Moles of carbon dioxide = 6.26 moles
we got the moles so we can calculate the mass of carbon dioxide
Mass of carbon dioxide = moles x mass molar
Mass of carbon dioxide = 6.25 moles x 44 g/moles
Mass of carbon dioxide = 274 grams
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