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Calculations involving masses

Calculations involving masses

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Question 94

Tungsten is a transition metal highly valued for its high melting point and strength. It is industrially extracted by the reduction of tungsten(VI) oxide (WO3\text{WO}_3WO3​) using hydrogen gas.

The balanced equation for this reaction is:

WO3+3H2→W+3H2O \text{WO}_3 + 3\text{H}_2 \rightarrow \text{W} + 3\text{H}_2\text{O} WO3​+3H2​→W+3H2​O

Starting with 11.60 g of tungsten(VI) oxide, calculate the maximum mass of tungsten metal that could be obtained in this reaction.

(Relative atomic masses, ArA_rAr​: O=16.0\text{O} = 16.0O=16.0, W=184.0\text{W} = 184.0W=184.0)

You must show your working.

[3]
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Calculations involving masses Questions

  1. GCSE
  2. /Chemistry
  3. /Calculations involving masses

258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.

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