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Calculations involving masses

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Question 65

A hydrocarbon, $CxHy\text{C}_x\text{H}_y$ , is burned completely in excess oxygen, forming 17.6 g of carbon dioxide and 9.0 g of water.

The relative formula mass ( $M_r$ ) of the hydrocarbon is 58.

Calculate the molecular formula of the hydrocarbon $CxHy\text{C}_x\text{H}_y$ .

(Relative atomic masses, $A_r$ : $H=1.0\text{H} = 1.0$ , $C=12\text{C} = 12$ ; relative formula masses, $M_r$ : $H2O=18\text{H}_2\text{O} = 18$ , $CO2=44\text{CO}_2 = 44$ )

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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 65

A hydrocarbon, $CxHy\text{C}_x\text{H}_y$ , is burned completely in excess oxygen, forming 17.6 g of carbon dioxide and 9.0 g of water.

The relative formula mass ( $M_r$ ) of the hydrocarbon is 58.

Calculate the molecular formula of the hydrocarbon $CxHy\text{C}_x\text{H}_y$ .

(Relative atomic masses, $A_r$ : $H=1.0\text{H} = 1.0$ , $C=12\text{C} = 12$ ; relative formula masses, $M_r$ : $H2O=18\text{H}_2\text{O} = 18$ , $CO2=44\text{CO}_2 = 44$ )

[4]

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.