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Chemistry

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Katelyn Kuhn

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Cards in this guide (13)
Vaporization is the conversion of a liquid to a gas or vapor when the liquid is

AT its boiling point.

Boiling liquid maintains a constant temperature because

The boiling point temperature remains constant because liquids evaporate at this point. If the temperature drops the liquid will no longer boil. At a higher temperature the vapor becomes hotter, not the liquid.

A box with a volume of 22.4 L contains 1.0 mol nitrogen and 2.0 mol hydrogen at 0à Celsius Which of the following statements is true

the partial pressure of N2 is 101kPa

A sample of H2O with a mass of 46.0 grams has a temperature of 100.0C How many joules of energy are necessary to boil the water

If the sample is at 100 0C, at standard pressure, no supplementary heating is necessary.

Pressure is used to increase the volume of gas

Pressure is used to increase the volume of gas in Boyle's law.

How much heat is needed to raise 8 kg of water from 4 degress celsius to 83 degrees celsius

4,200 J/kgC

(83-4) x 8kg x 4,200 = 2,654,400 joules

How many joules of energy are necessary to heat a sample of water with a mass of 46.0 grams for 0.0

46 calories (or 192, 464 joules) for each Celsius degree.

How much energy is needed to melt 4.24 grams of Pd

687

How many joules of energy are necessary to heat a sample of water with a mass of 46 g

46 calories (or 192, 464 joules) for each Celsius degree.

What is true about a solid and liquid

they are both states of matter

Is the change of state of a substance from solid to vapor without passing through the liquid state.

The change of state is called sublimation.

Choose the best definition for this symbol. (s)

Solid

A sample of H2O with a mass of 46.0 grams has a temperature of -58.0 Celsius. how many joules of energy are necessary to heat the ice to 0 Celsius use 2.1 joules for the specific heat of ice

The heat is 5,624 kJ.

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