A-LevelChemistryAtoms, molecules and stoichiometry9701/12 · May/June 2017 · Q191 Mark

A chemist took 2.00 dm³ of nitrogen gas, measured under room conditions, and reacted it with a large volume of hydrogen gas to produce ammonia. Only 15.0% of the nitrogen gas reacted to produce ammonia. Which mass of ammonia was formed?

A0.213 g

B0.425 g

C1.42 g

D2.83 g

✓ Correct answer

B: 0.425 g

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Topic: Atoms, molecules and stoichiometry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2017 Paper 1 Variant 2, question 19.

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