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2.6 Calculations involving masses

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Question 14
F

Calcium carbonate reacts with dilute hydrochloric acid in a sealed flask. Carbon dioxide forms. What happens to the total mass?

[1]
A

It decreases because the solid dissolves

B

It increases because a gas forms

C

It decreases because carbon dioxide forms

D

It remains constant because no matter leaves

Markscheme

2.6 Calculations involving masses Questions

  1. GCSE
  2. /Chemistry
  3. /2.6 Calculations involving masses

55 exam-style questions on Edexcel GCSE Chemistry 2.6 Calculations involving masses, covering 2.6.1 Relative formula mass and percentage composition, 2.6.2 Empirical and molecular formulae, 2.6.3 Conservation of mass, 2.6.4 Reacting masses and concentration in g dm⁻³, 2.6.5 The mole and the Avogadro constant, and 2.6.6 Limiting reactants and stoichiometry. Each one has a worked solution and a mark scheme showing where the marks go.

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