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2.6 Calculations involving masses

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Question 19
H

Nitrogen reacts with hydrogen: N2+3H2→2NH3\mathrm{N_{2}} + 3\mathrm{H_{2}} \rightarrow 2\mathrm{NH_{3}}N2​+3H2​→2NH3​. How many moles of ammonia can form from 6.0 mol H2\mathrm{H_{2}}H2​ with excess N2\mathrm{N_{2}}N2​?

[1]
A

4.0 mol

B

3.0 mol

C

2.0 mol

D

6.0 mol

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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