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IB Chemistry SL 1.4.1 Mole Mol Questions

Use Avogadro constant and the chemical formula to convert an amount in mol into the specified number of particles.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Convert amount of substance in mol to a number of specified atoms, molecules or ions using Avogadro constant.

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Study 1.4.1—Mole (mol) conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry SL 1.4.1 Mole Mol Questions question 1

[Maximum number: 1]

How many ions are present in 0.20 mol of (NH4)2SO4\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} ?

A

0.20×1×6×10230.20 \times 1 \times 6 \times 10^{23}

B

0.20×2×6×10230.20 \times 2 \times 6 \times 10^{23}

C

0.20×3×6×10230.20 \times 3 \times 6 \times 10^{23}

D

0.20×7×6×10230.20 \times 7 \times 6 \times 10^{23}

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