Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Principles of Chemistry
991 practice questions
Topics covered
- States of Matter102 practice questions
- Elements, Compounds and Mixtures69 practice questions
- Atomic Structure108 practice questions
- The Periodic Table103 practice questions
- Chemical Formulae, Equations and Calculations Part 119 practice questions
- Chemical Formulae, Equations and Calculations Part 2144 practice questions
- Ionic Bonding143 practice questions
- Covalent Bonding68 practice questions
- Metallic Bonding19 practice questions
- Electrolysis198 practice questions
Practice questions
171–180 of 407 · Easy
Question 171
3 marks · Easy
Answer and see the solution →Methane combusts in oxygen according to the equation:
A sample of methane of volume 2.4 dm³ is burned completely in excess oxygen at rtp.
(a)[1 mark]Calculate the number of moles of methane in the sample.
(b)[2 marks]Calculate the volume, in dm³, of carbon dioxide gas produced at rtp.
Question 172
2 marks · Easy
Answer and see the solution →Calculate the volume, in dm³, of 3.0 moles of nitrogen gas at room temperature and pressure (rtp).
Question 173
2 marks · Easy
Answer and see the solution →Two balloons are filled with different gases at room temperature and pressure (rtp): one has 48 dm³ of helium (He), and the other has 48 dm³ of methane (CH₄).
Explain whether the two balloons contain the same number of particles. Give a reason for your answer.
Question 174
1 mark · Easy
Answer and check →What is the volume, in dm³, of 2 moles of a gas at room temperature and pressure (rtp)?
Question 175
3 marks · Easy
Answer and see the solution →A student records the volume of a sample of hydrogen gas as 1800 cm³. Answer the following:
(a)[1 mark]State the conversion factor from dm³ to cm³.
(b)[2 marks]Convert 1800 cm³ to dm³.
Question 176
2 marks · Easy
Answer and see the solution →State the volume occupied by 1 mole of oxygen gas at room temperature and pressure (rtp) in cm³. Show your answer with the correct unit.
Question 177
2 marks · Easy
Answer and see the solution →Explain why 2 moles of argon gas at rtp have twice the volume of 1 mole of argon gas at rtp. Use your knowledge of molar volume in your answer.
Question 178
3 marks · Easy
Answer and see the solution →The table below shows the volumes of gases. Complete the table by filling in the missing values.
Gas Volume (cm³) Volume (dm³) Nitrogen 2200 Helium 1.5 Chlorine 1400 Question 179
1 mark · Easy
Answer and see the solution →State the molar volume of any gas at room temperature and pressure (rtp), in dm³.
Question 180
3 marks · Easy
Answer and see the solution →You have 0.40 mol of neon gas at rtp.
(a)[2 marks]Calculate the volume in dm³ occupied by this amount of gas at rtp.
(b)[1 mark]State your final answer in cm³.