1.2 × 10²³ molecules are there in 24 grams of FeF₃ molecule. 1 mole is equal to 6.023 × 10²³ particles.
What do you mean by mole ?A mole is a important unit of measurement that chemists use in calculation. 1 mole is exactly equal to the 6.023 × 10²³ particles.
The term mole is defined as the amount of substance containing 6.023 × 10²³ molecules.
First multiply the number of moles supplied by Avogadro's Number to detect how many molecules there are.
Moles are determined from the molecular weight.
For FeF₃ molecule,
55.8 + 3⋅19 = 116g/mole
24 gram / 116g/mole
= 0.207 moles of FeF₃
= 0.207 moles × 6.023 × 10²³
= 1.2 × 10²³ molecules
Thus, in 24 grams of FeF₃ molecule 1.2 × 10²³ molecules are present.
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The molecular formula of most monosaccharides represents a multiple of:a. CHOCHO.b. CHO2CHO2.c. CHO3CHO3.d. CH2OCH2O.e. CH3OCH3O.
Monosaccharides, also called sugars, have the typical molecular formula [C([tex]$$H_2O[/tex])]n.
What is the molecular formula of most monosaccharides?Monosaccharides, also called sugars, have the typical molecular formula [C([tex]$$H_2O[/tex])]n, where n = 3–7, and can be classified as either aldehyde-aldoses or ketoses based on whether they contain an aldehyde or ketone functional group.
Examples of monosaccharides include glucose, fructose, galactose, ribose, and deoxyribose. Monosaccharides are one sugar unit (hexose sugar).
The simplest type of carbohydrates are monosaccharides. Monomers called monosaccharides are able to be combined to create more intricate carbohydrates. Carbon, hydrogen, and oxygen make up the molecules that make up monosaccharides.
The monosaccharides consist of simple sugars and their byproducts. The building blocks of more complicated molecules, they are the basic carbohydrate units. At least one hydroxyl group, an aldehyde (RCHO) or ketone (RCOR) group, and carbon atoms with hydrogen atoms attached are the components of monosaccharides.
Therefore, the correct answer is option a. CHOCHO.
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16) SEP Ask Questions The process of evaporation has a different outcome in an open
system versus a closed system. What happens to the water level in a closed water
bottle compared to an open water bottle if you set them both out in the sun?
Notebook
I U
B
The water level remains unchanged because the molecules of water vapor cannot diffuse into the surroundings.
Describe the evaporation.In order for a liquid to become a gas, evaporation must occur. When raindrops "disappear" on a hot day or when wet clothing dries in the sun, it is simple to picture this phenomenon. In these instances, the liquid water is actually evaporating into a gas known as water vapor rather than truly dissipating.
Evaporation explained to childrenWhen a liquid turns into a gas, it has evaporated. To form a gas known as water vapor, liquid water evaporation occurs. Water evaporation and atmospheric re-entry are made possible by the sun's heat. It then creates a cloud and returns to being liquid water.
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in the laboratory, you could determine whether a colorless liquid was ethanol or a mixture of ethanol and sucrose by___
Sucrose is not highly soluble in ethanol, sucrose particles will be seen in the solution that contains both sugar and ethanol.
What is sucrose and ethanol?Two moles of ATP are created during the fermentation of alcohol from one mole of glucose into two moles of ethanol and two moles of carbon dioxide. The sugar sucrose is made up of two sugars: glucose and fructose.
[tex]$$C_6H_{12}O_6 \rightarrow 2 C_2H_5OH + 2 CO_2[/tex]
Inorganic solvents like acetonitrile, benzene, pyridine, and methanol are easily soluble in sucrose octa acetate. At room temperature, it dissolves in 95% ethanol with a 12% (v/v) solubility.
A specific solute may be easily dissolved by some solvents but not by others. Differentiating between these solvents can be done by testing solubility. Because sucrose is not highly soluble in ethanol, sucrose particles will be seen in the solution that contains both sugar and ethanol.
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How to Draw the Lewis Structure for SeF4
The lewis structure of the SeF₄ is as follows :
..
|
..
: F :
: F : - Se : - : F :
°° | °°
: F :
°°
The total valence electrons in the SeF₄ is the 34 electrons. The molecular structure of the SeF₄ is the trigonal bipyramidal. The Selenium that is Se is the least electronegative atom than the fluorine atom and therefore in the center of the structure.
In SeF₄ Lewis structure with the Selenium which can hold the more than 8 valence electrons and there are the seven Fluorine atoms with the F.
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Why is hexane non-polar?
Because it only contains carbon and hydrogen atoms, which evenly transfer electrons across all of the atoms in the molecule, hexane is a non-polar molecule.
The molecule is non-polar because electrons are distributed evenly throughout it as a result of this equitable sharing.
With the chemical formula C6H14, the hydrocarbon hexane indicates that it has six carbon atoms and fourteen hydrogen atoms. There occurs a formation of three covalent bond by using each carbon atom with hydrogen atom and one more with one carbon atom next to it.
These covalent connections, which require sharing electrons between atoms, require one or more electrons from each element.
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Precipitation of water on the land surface leads directly to ________.
what is the molar mass of ferrocene?
The molar mass of the ferrocene is the 186.0 g/mol.
The molecular formula for the ferrocene is the C₁₀H₁₀Fe.
The molar mass of the carbon is 12 g/mol
The molar mass of the hydrogen is 1 g/mol
The molar mass of the Fe is 55.8 g/mol
The molar mass of the ferrocene , C₁₀H₁₀Fe is as
The molar mass of the ferrocene = 10 (12) + 10 (1) + 55.8
The molar mass of the ferrocene = 186 g/mol.
Thus, molar mass of the ferrocene that is the C₁₀H₁₀Fe is 186 g/mol.
The ferrocene, C₁₀H₁₀Fe is also called as the Dicyclopentadienyliron, this is the earliest and best known for the sandwich compounds.
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You have a sample of 35.2g of MgSO4. How many moles of MgSO4 are in the sample? Show all your work
We must understand the relationship between moles, molar mass and mass to be able to solve questions with them:
[tex]n=\dfrac{m}{M}[/tex]
[tex]n[/tex] = moles[tex]m[/tex] = mass[tex]M[/tex] = molar massSolving the QuestionWe're given:
[tex]m[/tex] = 35.2 g[tex]M[/tex] = sum of Mg, S and O4: 120.368 g/mol (taken from Chemspider)Apply the formula:
[tex]n=\dfrac{m}{M}[/tex]
[tex]n=\dfrac{35.2}{120.368}\\\\n=0.292\hspace{4}mol[/tex]
Answer0.292 mol
Select the appropriate pipette to use for each of the following volumes. a. 874 µLb. 57 µL c. 340 µL d. 15 µL
The pipette we can use for 874µL is A P1000 and for 57µL is A P20 and for 340µL is A P200 and for 15µL is A P10 .
To select the appropriate pipette, we need to choose one with a volume range that encompasses the desired volume, but also one that is precise enough for the required application. Here are some options:
a. 874 µL: A P1000 pipette would be appropriate, as it has a volume range of 100-1000 µL and can deliver volumes up to 1 mL with high precision.
b. 57 µL: A P20 pipette would be appropriate, as it has a volume range of 2-20 µL and can deliver volumes up to 20 µL with high precision.
c. 340 µL: A P200 pipette would be appropriate, as it has a volume range of 20-200 µL and can deliver volumes up to 200 µL with high precision.
d. 15 µL: A P10 pipette would be appropriate, as it has a volume range of 0.5-10 µL and can deliver volumes up to 10 µL with high precision.
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11.8 Aromatic compounds
1. Name each compound using both the common name and the IUPAC name.
1.
2.
3.
CI
Oo
CI
Br
NO,
2. Name each compound using both the co
CH₂
NO₂
The compound CO has name carbon monoxide while CH₂ and NO₂ respectively ethylene and nitrogen dioxide respectively.
What is a compound?Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
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Calculate the molecular mass of Ammonium chloride nh4cl
The molecular mass of a Ammonium chloride molecule, NH₄Cl is equals to the 53.5 g/mol.
We have a Ammonium chloride molecule, NH₄Cl. It consists one atom of nitrogen, one atom of chlorine and four atoms of hydrogen. Molecular mass of a molecule is the sum of the masses of the individual atoms within the quantities present in a molecule. So, the molecular mass of NH₄Cl, is sum of individual masses of hydrogen, nitrogen and chlorine atoms with number of their atoms. The atomic mass of chlorine atom, Cl = 35.5 g/mol
The atomic mass of hydrogen atom, H = 39.098 g/mol
The atomic mass of nitrogen atom, N
= 14 g/mol
Now, Molecular mass of NH₄Cl = 1× atomic mass of Nitrogen + 1×atomic mass of chlorine + 4× atomic mass of hydrogen atom
= 1×N + 1×Cl + 4×H
= 1× g/mol + 1×14 g/mol + 4×1 g/mol
= 35.5 g/mol + 14 g/mol + 4 g/mol
= 53.5 g/mol
Hence, the molecular mass of NH₄Cl is 53.5 g/mol.
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(b) The equation for the decomposition of hydrated zinc sulfate is
Zn50,-7H₂O(s)→ ZnSO (s) + 7H,01)
The student records these masses.
mass of boiling tube
= 41.64g
mass of boiling tube + Zn50,-7H₂O = 54.46g
Calculate the maximum volume, in cm³, of pure water that could be produced.
Give your answer to 1 decimal place.
[1.00 cm¹ of pure water has a mass of 1.00 gl
[M, of Zn50, 7H,0 = 287 M, of H₂O = 18]
The volume of the water is 7100 cm³
What is the decomposition reaction?A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more simpler substances. In a decomposition reaction, a reactant is broken down into two or more products, typically through the application of heat, light, or an electrical current.
Mass of the ZnSO4.7H2O = 54.46g - 41.64g
= 12.86 g
Number of moles of the ZnSO4.7H2O = 12.86 g/287.6 g/mol
= 0.045 moles
If 1 mole of ZnSO4.7H2O produces 7 moles of water
0.045 moles produces 0.045 * 7/1
= 0.315 moles
If 1 mole of gas occupies 22.4 L
0.315 moles of gas occupies 0.315 * 22.4/1
= 7.1 L or 7100 cm³
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what is ca 540 instructions?
The CA 540 instruction is to make the adjustments to the federal adjusted gross income and to the federal itemized deductions by using the California law.
The CA (540), is the California Adjustments – The Residents, to make the adjustments to the federal adjusted gross income and to the federal itemized deductions by using the California law. The CA 540 is the California Resident Income Tax Return.
It is equal to total income we report that's the subject to the income tax, such as the earnings from the job, the self-employment, the dividends and the interest from the bank account - minus the specific deductions, the adjustments that we are eligible to take.
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many cell organelles, most notably the nucleus, are anchored by
how to write lewis structure for h2s?
The concept of covalent bond is introduced by the scientist G.N. Lewis. The Lewis structure of hydrogen sulfide is similar to that of water.
What is Lewis structure?The structure in which the electrons of the compound are represented by dots is defined as the Lewis structure. It provide a picture of bonding in molecules in terms of the shared pairs of electrons and the octet rule.
The structure of H₂S contains two 'H' atoms and one 'S' atom. The central element is sulfur and two hydrogen atoms are linked with the help of a single bond. It has tetrahedral shape.
Thus the Lewis structure of H₂S is shown below.
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The colligative molality of seawater is approximately 1.10 m. Calculate the vapor pressure of sea water at 20°C. The vapor pressure of pure water at 15°C is 17.54 Torr?
The vapor pressure of sea water at 20°C is 0.45 Tor.
First, we calculate the mole fraction of salt in seawater. We can use the formula:
X₂ = moles of salt / (moles of salt + moles of water)
The molar mass of seawater is approximately 0.9645 kg/mol, so the mass of water in 1 kg of seawater is:
mass of water = 1 kg / (1 + 0.9645 kg/mol) = 0.5093 kg
Therefore, the moles of water in 1 kg of seawater are:
moles of water = mass of water / molar mass of water = 0.5093 kg / 0.01802 kg/mol = 28.32 mol
Using the molality, we can calculate the moles of salt in 1 kg of seawater:
moles of salt = molality × mass of water = 1.10 mol/kg × 0.5093 kg = 0.560 mol
Therefore, the mole fraction of salt in seawater is:
X₂ = 0.560 mol / (0.560 mol + 28.32 mol) = 0.0195
Next, we can use the given vapor pressure of pure water at 15°C to calculate the vapor pressure of pure water at 20°C.
ln(P₂°/P₁°) = (ΔH_vap / R) × (1/T₁ - 1/T₂)
ln(P₂°/17.54 Torr) = (40.7 kJ/mol / (8.314 J/(mol·K))) × (1/288.15 K - 1/293.15 K)
Solving for P₂°, we get:
P₂° = 18.91 Torr
Finally, we can use the equation for the change in vapor pressure to calculate the vapor pressure of seawater at 20°C:
ΔP = X₂ × P₂° × i₂
ΔP = 0.0195 × 18.91 Torr × 1.2
ΔP = 0.45 Tor
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in the transition state for this compound, the negative charge is shared between the outgoing cl atoms and incoming br atoms. based on hammond's theorem, how would you expect the charge to be distributed between the two atoms?
Hammond's postulate predicts that the charge in the transition state of a reaction will be distributed in a way that minimizes the difference in electronegativity between the two atoms.
Hammond's postulate, also known as Hammond's theorem, states that in the transition state of a reaction, the charge is distributed in such a way as to minimize the difference in electronegativity between the two atoms involved in the reaction. This means that if one of the atoms is more electronegative than the other, it will pull electrons towards itself more strongly and therefore, carry a larger portion of the negative charge in the transition state. The charge distribution in the transition state will therefore be a balance between the electronegativities of the two atoms involved in the reaction.
In the case of the Cl and Br atoms, if the electronegativity difference is significant, the Br atom is likely to carry more of the negative charge. However, it is important to note that this is just a prediction and the actual charge distribution in the transition state may be influenced by other factors, such as bond length, bond angle, and electronic factors.
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why compound be broken down into simpler substances
A compound can be broken down into simpler substances because it is made up of two or more different elements that are chemically combined together. When a compound is broken down, it results in the formation of new substances that have different properties than the original compound.
Compounds are formed through a chemical reaction between different elements, and the resulting substance is held together by chemical bonds. These bonds can be broken through various processes such as heating, electrolysis, or chemical reactions. Once the bonds are broken, the individual elements that make up the compound are released and can be isolated.
The ability to break down compounds into simpler substances is an important aspect of chemistry, as it allows scientists to study the properties and behavior of individual elements. It also plays a crucial role in industries such as pharmaceuticals and agriculture, where compounds are broken down to extract useful substances. Understanding the composition and behavior of compounds is fundamental to advancing our knowledge of the natural world and improving our quality of life.
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The complete question is-
Are the properties of two proteins with the same type and number of amino acids but a different order of linkage the same?
Atomic mass of bromine is 80 g. The mass of four moles of molecular bromine (Br2) is:
A.80 g
B.6.40 g
C.40 g
D.320 g
Atomic mass of bromine is 80 g. The mass of four moles of molecular bromine (Br₂) is 640 g. The correct alternative is not given.
To find the mass of four moles of molecular bromine (Br₂), you can use the formula:
mass = moles × molar mass
The molar mass of Br₂ is the atomic mass of bromine multiplied by two, since there are two atoms of bromine in each molecule of Br₂. So the molar mass of Br₂ is:
molar mass of Br2 = 80 g × 2 = 160 g
Now you can plug in the values for moles and molar mass into the formula:
mass = 4 moles × 160 g = 640 g
So the mass of four moles of molecular bromine (Br₂) is 640 g.
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an nacl solution is prepared by dissolving 20.0 g nacl in 150.0 g of water at 25°c. what is the vapor pressure of the solution if the vapor pressure of water at 25°c is 23.56 torr?A. 0.9304 torrB. 0.4746 torrC. 21.77 torrD. 0.8950 torrE. 22.63 torr
The vapor pressure of the solution is approximately 20.91 torr, which is closest to option C: 21.77 torr.
To calculate the vapor pressure of the solution, we can use Raoult's law, which states that the vapor pressure of a solution is proportional to the mole fraction of the solvent in the solution.
The mole fraction of water can be calculated as follows:
moles of water:
= (150.0 g / 18.015 g/mol) / [(150.0 g / 18.015 g/mol) + (20.0 g / 58.44 g/mol)]
= 0.887
Raoult's law states that the solution's vapour pressure is:
vapor pressure of water * mole fraction of water
= 23.56 torr * 0.887
= 20.91492 torr.
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what is the strongest interparticle force present in a sample of h3po4?
The strongest intermolecular force in phosphoric acid is ion-dipole.
What is an ion dipole bond?
An ion-dipole bond is a type of chemical bond that occurs between an ion and a molecule with a dipole moment. Ions are charged atoms or molecules that have lost or gained one or more electrons, resulting in a net positive or negative charge. Dipole moments occur when the electrons in a molecule are not evenly distributed, resulting in one end of the molecule having a partial negative charge and the other end having a partial positive charge.
In an ion-dipole bond, the ion is attracted to the opposite partial charge on the dipole molecule. This attraction is known as an electrostatic interaction or Coulombic interaction, and it is a type of intermolecular force.
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is nh3 strong or weak?
Ammonia (NH₃) is a weak base.
When dissolved in water, ammonia reacts with water molecules to form ammonium ions (NH₄⁺) and hydroxide ions (OH⁻), according to the following equation:
NH₃ + H₂O ⇌ NH₄⁺ + OH⁻
Ammonia only partially dissociates in water, which means that it produces relatively few hydroxide ions compared to a strong base like sodium hydroxide (NaOH). Therefore, ammonia is considered a weak base.
The strength of a base is determined by its ability to donate hydroxide ions (OH⁻) in water, which is quantified by the base dissociation constant (Kb). The Kb value for ammonia is relatively low (1.8 x 10⁻⁵), compared to strong bases like sodium hydroxide (Kb value of 1.0 x 10¹⁴).
Overall, ammonia can still react with acids to form salts and water, but its reactivity is much weaker than that of a strong base.
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Is the dissolution of sodium acetate in water endothermic or exothermic?
The dissolution of sodium acetate in water is exothermic. The dissolution of sodium acetate in water is a chemical reaction that releases heat.
This reaction is exothermic, meaning that it releases energy in the form of heat into the surroundings. This occurs because the bonds between the sodium acetate molecules are broken during the dissolution process, and the energy required to break these bonds is released into the water. The amount of heat released during the reaction can be measured using a calorimeter, and can be used to calculate the enthalpy change for the reaction.
The exothermic nature of the dissolution of sodium acetate in water is due to the fact that the energy released by breaking the bonds between the sodium acetate molecules is greater than the energy required to separate the ions in the solution. This results in a net release of energy, which makes the reaction exothermic.
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Answer: The dissolution of sodium acetate in water is exothermic. The dissolution of sodium acetate in water is a chemical reaction that releases heat. This reaction is exothermic, meaning that it releases energy in the form of heat into the surroundings. This occurs because the bonds between the sodium acetate molecules are broken during the dissolution process, and the energy required to break these bonds is released into the water. The amount of heat released during the reaction can be measured using a calorimeter, and can be used to calculate the enthalpy change for the reaction. The exothermic nature of the dissolution of sodium acetate in water is due to the fact that the energy released by breaking the bonds between the sodium acetate molecules is greater than the energy required to separate the ions in the solution. This results in a net release of energy, which makes the reaction exothermic.
Explanation:
What is the volume of 128 g of oxygen at STP?
Standard Temperature and Pressure, or STP
1 mole of any gas takes up 22.4L at STP. Answer is 89.6L
What is STP (Standard Temperature and Pressure)?
Numerous thermodynamic tabulations and computations using STP. The density, viscosity, boiling point, and other characteristics of matter will change when the temperature or pressure changes. Calculations are made simpler and comparisons are made feasible by using a single set of criteria (or "state") to tabulate these data.
It is closely connected to the idea of matter in its usual state, sometimes known as "standard circumstances." Standard state does not always refer to a particular temperature, however 25 °C (298 K) is the most typical value used.
On a safety data sheet, the initials "STP" are most frequently found following a physical characteristic of the substance, such as density, flammable limit, or vapor pressure. The SDS's Section 9 (Physical and Chemical Properties) contains information on these characteristics.
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An NaCl solution is prepared by dissolving 90.0 g NaCl in 250.0 g of water at 25°C. What is the vapor pressure of the solution if the vapor pressure of water at 25'C is 23.56 torr? 21.21 torr 2.354 torr 1239 torr 19.28 torr 2.140 torr
The correct answer to this solution is
Using Raoult's Law
P solution = X solvent * P0 solvent
Where, X solvent = mole fraction of solvent
P0 solvent= vapor pressure of pure solvent = 23.56 torr
Number of moles of solute
= mass/molar mass = 90.0g / 58.44g/mol
= 1.540 moles
However, number of moles of solute particles (n1) after complete dissociation
= 2*1.540 = 3.08 moles
Number of moles of solvent (n2) = 250.0g/18.02g/mol
= 13.874 moles
X solvent = (n,)/ (n, +n,)
= 13.874 / (3.08+13.874)
= 0.8183
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The molar mass of nacl and the molar mass of caco3 contain approximately the same number of _____.
The molar mass of NaCl and the molar mass of CaCO₃ contain approximately the same number of grams per mol.
In science, the molar mass (M) of a chemical compound is characterized as the proportion between the mass and how much substance (estimated in moles) of any example of said compound.[1] The molar mass is a mass, not sub-atomic, property of a substance. The molar mass is a normal of many occasions of the compound, which frequently fluctuate in mass because of the presence of isotopes.
Most ordinarily, the molar mass is figured from the standard atomic weight and is consequently an earthly normal and an element of the overall wealth of the isotopes of the constituent particles on the planet. The molar mass is fitting for changing over between the mass of a substance and how much a substance for mass amounts.
i()Molar of mass : NaCl: 58.5 g/mol No. of Moles = Mass / Molar mass Mass = 1 × 58.5g Therefore, mass of 1 mole of NaCl is 58.5 g.
(ii) Molecular mass of CaCO₃ = (1 × Ca + 1 × C + 3 × O) = (1 × 40 + 1 ×12 + 3 × 16) = 40 + 12 + 48 = 100 Molar mass of CaCO₃ = 100 g
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give iupac names for the following compounds:
(a) Propylbenzene
(b) 3-Methylpentanenitrile
(c) 2,5-Dimethylheptane
(d) 3-Brome-3-chloroheptane
(e) 3-chloropropanal
(f) 2,2-Dichloroethanol
The IUPAC names for the following compounds are :
(a) Propylbenzene
(b) 3-Methylpentanenitrile
(c) 2,5-Dimethylheptane
(d) 3-Brome-3-chloroheptane
(e) 3-chloropropanal
(f) 2,2-Dichloroethanol
The IUPAC naming rules are the certain rules that are regarding the naming of the organic compounds. The compounds will be numbered based on the longest chain of the carbon atoms in it. The numbering will be starts from the position of the double bond or the triple bond.
The name will be given in the alphabetical order with the prefix of the functional groups and the number is in the manner that the carbons atoms containing the functional groups will have the small numbers.
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The carboxyl group is made up of a carbon atom bonded to__________.
The carboxyl group is made up of a carbon atom bonded to an oxygen atom, a hydroxyl group (-OH), and a double-bonded oxygen atom.
The carboxyl group is an organic functional group characterized by a carbon atom bonded to an oxygen atom (-COOH) and a hydroxyl group (-OH). The carbon atom is also double-bonded to an oxygen atom, resulting in the formation of a carbonyl group (-C=O). This combination of functional groups makes the carboxyl group highly reactive, and it is a key component of many organic molecules, including carboxylic acids, amino acids, and many other biochemicals.
The presence of the carboxyl group gives these molecules acidic properties and makes them important components of metabolic reactions. The carboxyl group is also a common target for chemical modification and is used in many industrial and research applications, including drug development and chemical synthesis.
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Each different signal in a 1H NMR spectrum represents a different__________of hydrogen atom. Hydrogen atoms that are_______________give the same signal.
The various signals in a 1H NMR spectrum correspond to various hydrogen atom types. Equivalent hydrogen atoms produce the same signal.
What signals represent in a 1H NMR spectrum?The 1H NMR spectrum has three signals in total. 1,3-dimethylbenzene: The two protons in Hc and Hd are each one carbon away from a methyl group, while Hb is located between two methyl groups. The four aromatic protons can therefore be separated into three sets. It is comparable to have two methyl groups.
So, when a 1H NMR experiment is run, the spectrum will only contain one signal that represents all four hydrogens at a single chemical shift. [Here is the NMR spectra]
In terms of NMR, all three Ha protons and all three Hb protons are chemically equal to one another. The Ha and Hb protons are not chemically identical, though. Because of this, the Ha protons' resonance frequency differs from the Hb protons'.
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Juniors lab group compared how different aged grass composts effected soybean plants. Containers of soybean plants were grown for 10 days. the plants were then fertilized as follows: (a) container A: 350 g of 3 month old compost, (b) container B: 350 g of 6 month old compost, (c) container C: 350 g of year old compost, and (d) container D: 0g compost. the plants received the same amount of sunlight and water each day. at the end of the 10 days the group recorded the height of the plants (cm).
from the experiment above, which of the following could be considered the control group?
container A
container B
container C
container D
from the experiment above, which of the following could be considered the correct, testable hypothesis?
1: since decomposition is necessary for the release of nutrients, the older compost will make it easier for the soybean plants to photosynthesis
2: since soybean plants photosynthesis with sunlight and water, the plants with less compost will grow taller because they have access to more sunlight
3: since decomposition is necessary for the release of nutrients, the older the compost is, the taller the soybean plants will grow
4: the older compost will rot and become toxic to the soybean plants. because of this, the 3 month old compost will help the plants grow taller
Here, the control group is D. The compost does not affect the photosynthesis of the plant but it will affect its growth. Hence, the possible hypothesis is, since decomposition is necessary for the release of nutrients, the older the compost is, the taller the soybean plants will grow.
What is photosynthesis ?Photosynthesis is the biochemical process in plants to produce the chemical energy. The reaction involves combination of water and carbon dioxide to form glucose and oxygen gas. It does not depends on the nutrients or compost from the soil.
Old compost is made by mixing organic wastes in the right proportions into piles, rows, or containers; adding bulking agents, as needed, to create air spaces; regulating temperature, moisture, and oxygen to achieve accelerated decomposition; and allowing the finished product to fully stabilize and mature through a curing process.
Therefore, the possible hypothesis for this experiment is option 3. since decomposition is necessary for the release of nutrients, the older the compost is, the taller the soybean plants will grow.
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