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Calculations involving masses

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Question 8

A sample of hydrated magnesium sulfate, $MgSO4⋅xH2O\text{MgSO}_4 \cdot x\text{H}_2\text{O}$ , has a mass of 4.93 g. After heating to constant mass to remove all water of crystallisation, the anhydrous residue has a mass of 2.41 g.

What is the value of $x$ ?

[Relative atomic masses, $A_r$ : $H=1.0\text{H} = 1.0$ , $O=16.0\text{O} = 16.0$ , $Mg=24.3\text{Mg} = 24.3$ , $S=32.1\text{S} = 32.1$ ]

$2$

$5$

$6$

$7$

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 8

What is the value of $x$ ?

[Relative atomic masses, $A_r$ : $H=1.0\text{H} = 1.0$ , $O=16.0\text{O} = 16.0$ , $Mg=24.3\text{Mg} = 24.3$ , $S=32.1\text{S} = 32.1$ ]

$2$

$5$

$6$

$7$

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.