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Monitoring chemical reactions

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Question 13

Calcium carbonate decomposes upon heating to produce calcium oxide and carbon dioxide according to the equation:

\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2

What mass of calcium carbonate would be needed to produce 14.0 g of calcium oxide? (Relative atomic masses: $Ca=40\text{Ca} = 40$ , $C=12\text{C} = 12$ , $O=16\text{O} = 16$ )

$g10.0\text{ g}$

$g25.0\text{ g}$

$g35.0\text{ g}$

$g56.0\text{ g}$

Markscheme

Monitoring chemical reactions Questions

GCSE
Chemistry
Monitoring chemical reactions

91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

Monitoring chemical reactions

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Monitoring chemical reactions

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

Question 13

Calcium carbonate decomposes upon heating to produce calcium oxide and carbon dioxide according to the equation:

\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2

What mass of calcium carbonate would be needed to produce 14.0 g of calcium oxide? (Relative atomic masses: $Ca=40\text{Ca} = 40$ , $C=12\text{C} = 12$ , $O=16\text{O} = 16$ )

$g10.0\text{ g}$

$g25.0\text{ g}$

$g35.0\text{ g}$

$g56.0\text{ g}$

Markscheme

Monitoring chemical reactions Questions

GCSE
Chemistry
Monitoring chemical reactions

91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.