Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Calculating the volume of a certain number of moles
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →State the volume, in dm³ and in cm³, that 1 mole of a gas would occupy at room temperature and pressure (rtp).
Question 2
5 marks · Hard
Answer and see the solution →A student reacts zinc with dilute hydrochloric acid to produce hydrogen gas at room temperature and pressure (rtp), according to the equation:
The student collects exactly 0.85 mol of hydrogen gas.
(a)[2 marks]Calculate the volume, in dm³, of 0.85 mol of hydrogen gas at rtp. Show your working.
(b)[1 mark]Convert your answer from part (a) into cm³.
(c)[2 marks]Explain why a different gas produced under the same conditions and with the same number of moles would occupy the same volume.
Question 3
2 marks · Hard
Answer and see the solution →A laboratory sample has a measured volume of 0.275 dm³. Convert this volume to cm³, showing your working.