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CAIE A-Level Chemistry AS 2.2.1 Terms Mole Questions

Practise defining the mole using the Avogadro constant and calculating amounts of atoms, molecules and ions from masses, volumes and concentrations.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Define and use the mole and Avogadro constant to calculate amounts of particles, atoms, molecules and ions in chemical samples.

CAIE A-Level Chemistry AS 2.2.1 Terms Mole Questions question 1

[Maximum number: 1]

Which of these samples of gas contains the same number of atoms as 1 g of hydrogen gas?

A

22 g of carbon dioxide ( Mr:CO2,44M_{\mathrm{r}}: \mathrm{CO}_{2}, 44 )

B

8 g of methane (Mr:CH4,16)\left(M_{\mathrm{r}}: \mathrm{CH}_{4}, 16\right)

C

20 g of neon ( Mr:Ne,20M_{\mathrm{r}}: \mathrm{Ne}, 20 )

D

8 g of ozone ( Mr:O3,48M_{\mathrm{r}}: \mathrm{O}_{3}, 48 )

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