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6.1 Improving processes and products

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Question 17
F

A farmer needs to add 35 kg of nitrogen to a field.

The farmer uses ammonium sulfate, (NH4)2SO4\mathrm{(NH_{4})_{2}SO_{4}}(NH4​)2​SO4​.

Relative atomic mass (ArA_rAr​): H = 1.0 N = 14.0 O = 16.0 S = 32.1

What mass of ammonium sulfate is needed?

[1]
A

7.4 kg

B

82.6 kg

C

165 kg

D

330 kg

Markscheme

6.1 Improving processes and products Questions

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

61 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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