Skip to content

Course home

Question bank·6.1 Improving processes and products
Sign up

6.1 Improving processes and products

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
Question 46

A mineral-processing laboratory analyses a pure batch of calcium phosphate.

The batch has a mass of 465 kg.

The formula of calcium phosphate is Ca3(PO4)2\mathrm{Ca_{3}(PO_{4})_{2}}Ca3​(PO4​)2​.

Relative atomic mass (ArA_rAr​): Ca = 40.0 O = 16.0 P = 31.0

What mass of phosphorus does the batch contain?

[1]
A

67.0 kg

B

46.5 kg

C

139.5 kg

D

93.0 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.

More questions