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Atoms and reactions

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Question 29

How many electrons are removed from 1.35 × 10-2 g of Al(g)\text{Al(g)}Al(g) atoms to form Al3+(g)\text{Al}^{3+}\text{(g)}Al3+(g) ions?

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

A

1.00×10201.00 \times 10^{20}1.00×1020

B

3.01×10203.01 \times 10^{20}3.01×1020

C

9.03×10209.03 \times 10^{20}9.03×1020

D

3.91×10213.91 \times 10^{21}3.91×1021

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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