How many moles of helium gas occupy 6 dm3 at room temperature and pressure?
Question
How many moles of helium gas occupy 6 dm3 at room temperature and pressure?
Solution
To solve this problem, we need to use the molar volume of a gas at room temperature and pressure (RTP), which is 24.0 dm^3 per mole.
Step 1: Identify the given volume of helium gas, which is 6 dm^3.
Step 2: Use the molar volume of a gas at RTP to calculate the number of moles. The formula is:
Number of moles = Volume of gas / Molar volume at RTP
Step 3: Substitute the given values into the formula:
Number of moles = 6 dm^3 / 24.0 dm^3 per mole = 0.25 moles
So, 0.25 moles of helium gas occupy 6 dm^3 at room temperature and pressure.
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