Calculating moles of gases

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10 Terms

1
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How do you calculate the number of moles of a gas present?

Moles of gas= volume of gas (in dm³) / 24

Moles of gas= Volume of gas (in cm³) / 24,000

2
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What 2 conditions affect the molar volume of a gas?

  • Temperature

  • Pressure

3
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State the equation used to calculate the volume of a gas under changed conditions.

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4
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State the ideal gas equation.

pV= nRT

p is the pressure (in Pascals).

V is the volume (in m³).

n is the number of moles.

R is the gas constant.

T is the temperature (in K).

5
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How do you convert from kilopascals to pascals?

x 1,000.

6
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How many pascals are in 1 atmosphere?

1 atmosphere= 101,325 Pa.

7
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How many dm³ are in 1 m³?

1 m³= 1,000 dm³.

8
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How many cm³ are in 1 m³?

1 m³= 1,000,000 cm³.

9
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What is the value for the gas constant?

8.314 J K−1 mol−1.

It is provided in the data sheet.

10
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How do you convert from celcius to kelvin?

Add 273.