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Atoms and reactions

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Question 65

How many electrons are removed from 4.86 × 10-2 g of Mg(g)\text{Mg(g)}Mg(g) atoms to form Mg2+(g)\text{Mg}^{2+}\text{(g)}Mg2+(g) ions?

(Avogadro's constant L=6.02×1023 mol−1L = 6.02 \times 10^{23}\text{ mol}^{-1}L=6.02×1023 mol−1)

A

1.20×10211.20 \times 10^{21}1.20×1021

B

2.41×10212.41 \times 10^{21}2.41×1021

C

4.88×10214.88 \times 10^{21}4.88×1021

D

6.02×10206.02 \times 10^{20}6.02×1020

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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