What volume will be occupied by: a) 2 mol of hydrogen; b) 0.2 mol of ammonia (NH3)?

a) Formula of hydrogen: H2 (for normal conditions – gas);
The formula for finding the volume: n = V / Vm from here we get V = n * Vm;
Vm – molar volume for gases under normal conditions is 22.4 mol / l.
V (H2) = 2 * 22.4 = 44.8 (l);
Answer: 2 moles of hydrogen takes up a volume of 44.8 liters.

b) Ammonia formula: NH3 (for normal conditions – gas);
The formula for finding the volume: n = V / Vm from here we get V = n * Vm;
Vm – molar volume for gases under normal conditions is 22.4 mol / l.
V (NH3) = 0.2 * 22.4 = 4.48 (l);
Answer: 0.2 mole of ammonia takes a volume of 4.48 liters.