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3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

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Question 17
H

When 18.0 g of a metal is heated in air it reacts completely to form 30.0 g of the metal oxide. A second sample of 27.0 g of the same metal is heated in air until it reacts completely. What mass of the metal oxide is formed?

[1]
A

39.0 g39.0\ \text{g}39.0 g

B

45.0 g45.0\ \text{g}45.0 g

C

54.0 g54.0\ \text{g}54.0 g

D

57.0 g57.0\ \text{g}57.0 g

Markscheme

3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations Questions

  1. GCSE
  2. /Chemistry
  3. /3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

40 exam-style questions on AQA GCSE Chemistry 3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations, covering 3.1.1 Conservation of mass and balanced chemical equations, 3.1.2 Relative formula mass, 3.1.3 Mass changes when a reactant or product is a gas, and 3.1.4 Chemical measurements. Each one has a worked solution and a mark scheme showing where the marks go.

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