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6.1 Improving processes and products

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Question 9
F

A copper ore contains 40% copper(II) oxide, CuO\mathrm{CuO}CuO, by mass. The rest of the ore contains no copper.

Relative atomic mass (ArA_rAr​): O = 16.0 Cu = 63.5

What is the maximum mass of copper that can be extracted from 1000 kg of this ore?

[1]
A

254 kg

B

320 kg

C

400 kg

D

501 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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