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6.1 Improving processes and products

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Question 26

A quality-control chemist checks a 60 kg batch of pure ammonium nitrate fertiliser, NH4NO3\mathrm{NH_{4}NO_{3}}NH4​NO3​.

Relative atomic mass (ArA_rAr​): H = 1.0 N = 14.0 O = 16.0

What is the mass of nitrogen in this batch?

[1]
A

10.5 kg

B

36.0 kg

C

24.0 kg

D

21.0 kg

Markscheme

6.1 Improving processes and products Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Improving processes and products

136 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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