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Calculations involving masses

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Question 93

Which calculation shows the percentage by mass of hydrogen in ethanol?

(Relative atomic mass of hydrogen, $H=1\text{H} = 1$ , relative formula mass of ethanol, $C2H5OH=46\text{C}_2\text{H}_5\text{OH} = 46$ )

$146×100\frac{1}{46} \times 100$

$546×100\frac{5}{46} \times 100$

$646×100\frac{6}{46} \times 100$

$466×100\frac{46}{6} \times 100$

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 93

Which calculation shows the percentage by mass of hydrogen in ethanol?

(Relative atomic mass of hydrogen, $H=1\text{H} = 1$ , relative formula mass of ethanol, $C2H5OH=46\text{C}_2\text{H}_5\text{OH} = 46$ )

$146×100\frac{1}{46} \times 100$

$546×100\frac{5}{46} \times 100$

$646×100\frac{6}{46} \times 100$

$466×100\frac{46}{6} \times 100$

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.