Calculating Volume of Gas, Moles and Gas
Pressure
Bronze
Complete the triangles above using the equation for
converting gas volume to moles pg. 28 and the
equation for converting moles to mass p.g 19.
1. Calculate the volume (dm3) of 3.5 moles of oxygen gas at room temperature and pressure.
2. Calculate the volume (dm3) of 35 moles of carbon dioxide gas at room temperature and pressure.
3. Calculate the number of moles of oxygen in 22dm3 of gas at room temperature and pressure.
4. Calculate the number of moles of carbon dioxide in 48dm3 of gas at room temperature and
pressure.
1 of 3
Calculating Volume of Gas, Moles and Gas Pressure
Silver
1. Calculate the number of moles of fluorine in 200cm3 of gas at room temperature and pressure.
Write your answer in standard form.
2. Calculate the mass of gas in a balloon containing 27dm3 of carbon dioxide gas at room
temperature and pressure.
3. Calculate the mass of gas in a balloon containing 500cm3 of oxygen gas at room temperature
and pressure.
4. What is the mass of gas in 40dm3 containing 60% nitrogen and 40% oxygen at room
temperature and pressure?
Gold
1. Calculate the mass of carbon dioxide that would be made by burning 2dm3 of propane (C3H8)
gas at room temperature and pressure.
C3H8 + 5O2
3CO2 + 4H2O
2. Calculate the mass of sodium chloride (NaCl) produced from 580cm3 of chlorine (Cl) and an
excess of sodium (Na).
2Na + Cl2
2NaCl
Calculating Volume of Gas, Moles and Gas Pressure
3. Calculate the volume of hydrogen produced when 56.2g of sodium reacts completely with
excess water.
2Na + 2H2O
2NaOH + H2