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CAIE IGCSE Chemistry 3.3.3 Amount of Substance Relation Amount Questions

Convert between moles and numbers of atoms, molecules or ions using Avogadro constant.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • convert moles to numbers of particles using Avogadro constant
  • calculate atoms, molecules and ions in a given amount
  • compare particle numbers in equal masses or gas volumes
  • convert between particle count, moles and mass
  • apply mole relationships to compounds and gases

CAIE IGCSE Chemistry 3.3.3 Amount of Substance Relation Amount Questions question 1

[Maximum number: 1]

Magnesium chloride, MgCl2\mathrm{MgCl}_{2}, contains magnesium ions and chloride ions.
How many chloride ions are present in two moles of magnesium chloride?

A

6.02×10236.02 \times 10^{23}

B

1.204×10241.204 \times 10^{24}

C

2.408×10242.408 \times 10^{24}

D

3.612×10243.612 \times 10^{24}

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