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Oliga [24]
3 years ago
8

What must happen for liquid water to become water vapor? Select one: A. The water molecules must lose energy and stop moving. B.

The water molecules must exert less pressure on their container. C. The water molecules must gain kinetic energy. D. The water molecules must lose heat and gain volume.
Chemistry
1 answer:
kirill [66]3 years ago
3 0
When water turns from a liquid into a vapor, the molecules actually spread out and move farther apart.

We can actually use a process of elimination here, to take out the answers that couldn't be correct.

The molecules don't become smaller, because when water turns from a liquid to a vapor, it goes through a physical change, not a chemical change.

The molecules don't become heavier. Water vapor is lighter and less dense than liquid water.

The molecules don't increase in number either. Because we know that molecules can't just appear out of nowhere. There really is no form of matter that can just appear out of nowhere
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Answer:

9.00 atm

For total pressure, you would add all the pressures together

7 0
3 years ago
Is SiO2 London Dispersion, Dipole-Dipole, or Hydrogen Bonding?
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Answer:

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Explanation:

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6 0
2 years ago
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After 11.5 days, 12.5% of a sample of radon-222 that originally weighed 42g remains. What is the half-life of this isotope?
Bond [772]
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5 0
3 years ago
For each of the esters provided, identify the alcohol and the carboxylic acid that reacted.
Veronika [31]

Answer:

52. The alcohol USED => methanol, CH3OH

The carboxylic acid USED => propanoic acid, CH3CH2COOH.

53. The alcohol USED => Ethanol, CH2CH3OH

The carboxylic acid USED => Formic acid, HCOOH.

Explanation:

52. To obtain Methyl propanoate, CH3CH2COOCH3, we simply react propanoic, CH3CH2COOH and methanol, CH3OH together as shown below:

CH3CH2COOH + CH3OH —> CH3CH2COOCH3 + H2O

The alcohol used: methanol, CH3OH

The carboxylic acid used: propanoic acid, CH3CH2COOH.

53. To obtain Ethyl methanoate, HCOOCH2CH3, we simply react

Formic acid, HCOOH and ethanol, CH3CH2OH together as show below:

HCOOH + CH3CH2OH —> HCOOCH2CH3 + H2O

The alcohol USED => Ethanol, CH2CH3OH

The carboxylic acid USED => Formic acid, HCOOH.

7 0
3 years ago
A solution with a ph of 4 has _________ the concentration of h+ present compared to a solution with a ph of 5.
Marina CMI [18]
<span>A solution with a pH of 4 has ten times the concentration of H</span>⁺<span> present compared to a solution with a pH of 5.
</span>pH <span>is a numeric scale for the acidity or basicity of an aqueous solution. It is  the negative of the base 10 logarithm of the molar concentration of hydrogen ions.
</span>[H⁺] = 10∧-pH.
pH = 4 → [H⁺]₁ = 10⁻⁴ M = 0,0001 M.
pH = 5 → [H⁺]₂ = 10⁻⁵ M = 0,00001 M.
[H⁺]₁ / [H⁺]₂ = 0,0001 M / 0,00001 M.
[H⁺]₁ / [H⁺]₂ = 10.
7 0
3 years ago
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