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Question 98

A sample of a reddish-brown rust deposit formed on an industrial steel beam is analyzed. The analysis reveals that the sample consists solely of iron and oxygen.

A 16.0 g sample of this oxide is found to contain 11.2 g of iron atoms, with the remainder being oxygen atoms.

Calculate the empirical formula of this iron oxide compound. (Relative atomic masses, $ArA_{\text{r}}$ : $Fe=56\text{Fe} = 56$ , $O=16\text{O} = 16$ )

[3]

Markscheme

Calculations involving masses Questions

GCSE
Chemistry
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.

Calculations involving masses

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Calculations involving masses

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Question 98

A sample of a reddish-brown rust deposit formed on an industrial steel beam is analyzed. The analysis reveals that the sample consists solely of iron and oxygen.

A 16.0 g sample of this oxide is found to contain 11.2 g of iron atoms, with the remainder being oxygen atoms.

Calculate the empirical formula of this iron oxide compound. (Relative atomic masses, $ArA_{\text{r}}$ : $Fe=56\text{Fe} = 56$ , $O=16\text{O} = 16$ )

[3]

Markscheme

Calculations involving masses Questions

GCSE
Chemistry
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.