Question: how to work out the volume of gas produced?
Answer: volume = 0.5 × 24 = 12 dm 3 Remember that 1 dm 3 = 1 000 cm 3 so the volume is also 12 000 cm 3 The equation can be rearranged to find the number of moles, if the volume of gas at rtp is known: number of moles = volume of gas at rtp ÷ 24.