Chemistry 5070 · 3 Stoichiometry
3.3 The mole and the Avogadro constant
Perform calculations involving moles, Avogadro's constant, molar gas volume, concentrations, stoichiometry, limiting reactants, empirical/molecular formulae, percentage yield, and purity.
- Questions
- 373
- Years
- 2004–2026
- Multiple choice
- 149
- Written answer
- 224
- Average marks
- 7.9
Where this subtopic appears
- Paper 1variants 01, 11, 12139
- Paper 4variants 04, 41, 42114
- Paper 2variants 02, 21, 2284
- Paper 3variants 03, 31, 3236
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2026 | 11 | – | 11 |
| 2023 | 17 | 16 | 33 |
| 2022 | 17 | 18 | 35 |
| 2021 | 18 | 20 | 38 |
| 2020 | 19 | 17 | 36 |
| 2019 | 18 | 15 | 33 |
| 2018 | 21 | 15 | 36 |
| 2017 | 13 | 13 | 26 |
| 2016 | 8 | 11 | 19 |
| 2015 | 13 | 8 | 21 |
| 2014 | 4 | 4 | 8 |
| 2013 | 6 | 3 | 9 |
| 2012 | 3 | 3 | 6 |
| 2011 | 6 | 3 | 9 |
| 2009 | 4 | 5 | 9 |
| 2008 | 7 | 4 | 11 |
| 2007 | 4 | 5 | 9 |
| 2006 | 4 | 5 | 9 |
| 2005 | 6 | 5 | 11 |
| 2004 | – | 4 | 4 |
