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Calculations involving masses

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Question 46

Calculate the percentage by mass of chromium in potassium dichromate, $K2Cr2O7\text{K}_2\text{Cr}_2\text{O}_7$ .

(relative atomic mass: $Cr=52\text{Cr} = 52$ , relative formula mass of $K2Cr2O7=294\text{K}_2\text{Cr}_2\text{O}_7 = 294$ )

Give your answer to the nearest whole number.

[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 46

Calculate the percentage by mass of chromium in potassium dichromate, $K2Cr2O7\text{K}_2\text{Cr}_2\text{O}_7$ .

(relative atomic mass: $Cr=52\text{Cr} = 52$ , relative formula mass of $K2Cr2O7=294\text{K}_2\text{Cr}_2\text{O}_7 = 294$ )

Give your answer to the nearest whole number.

[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.