Course home

Calculations involving masses

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 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117

Question 88

The thermal decomposition of green copper(II) carbonate produces black copper(II) oxide and carbon dioxide gas:

\text{CuCO}_3(\text{s}) \rightarrow \text{CuO}(\text{s}) + \text{CO}_2(\text{g})

A student heats 15.0 g of pure copper(II) carbonate until it is completely decomposed. Calculate the mass of the solid residue remaining.

(Relative atomic masses: $Cu=63.5\text{Cu} = 63.5$ ; $C=12.0\text{C} = 12.0$ ; $O=16.0\text{O} = 16.0$ )

Give your answer to two significant figures.

[2]

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

Question bank

Calculations involving masses

Easy Medium Hard

Question 88

The thermal decomposition of green copper(II) carbonate produces black copper(II) oxide and carbon dioxide gas:

\text{CuCO}_3(\text{s}) \rightarrow \text{CuO}(\text{s}) + \text{CO}_2(\text{g})

A student heats 15.0 g of pure copper(II) carbonate until it is completely decomposed. Calculate the mass of the solid residue remaining.

(Relative atomic masses: $Cu=63.5\text{Cu} = 63.5$ ; $C=12.0\text{C} = 12.0$ ; $O=16.0\text{O} = 16.0$ )

Give your answer to two significant figures.

[2]

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.