B7.7-4 Flashcard Gas-Mole Conversions

Front

What is the volume occupied by 1 mole of an ideal gas at STP?

Back

22.4 L

Front

How do you convert moles of a gas to volume at STP?

Back

Multiply the number of moles by 22.4 L.

Front

What is STP in terms of temperature and pressure?

Back

STP stands for Standard Temperature and Pressure: 0°C (273.15 K) and 1 atm.

Front

How many moles are in 500 mL of an ideal gas at STP?

Back

0.022 moles (500 mL = 0.5 L; 0.5 L / 22.4 L/mole = 0.022 moles).

Front

What is the relationship between moles and liters for gases at STP?

Back

At STP, 1 mole of gas occupies 22.4 liters.

Front

How many liters of gas are in 0.05 moles at STP?

Back

1.1 L (0.05 moles x 22.4 L/mole = 1.12 L).

Front

What is the molar volume of a gas at STP?

Back

The molar volume of a gas at STP is 22.4 L.

Front

If you have 6.0 L of nitrogen gas at STP, how many moles are present?

Back

0.27 moles (6.0 L / 22.4 L/mole = 0.267 moles).

Front

What is the formula to calculate moles from volume at STP?

Back

Moles = Volume (L) / 22.4 L/mole.

Front

How many moles are in 2.5 moles of helium gas at STP?

Back

2.5 moles (it is already given in moles).