AS Jun 13.pdf


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Do not write
outside the
box

2
Section A
Answer all questions in the spaces provided.

1

The mass spectrum of the isotopes of element X is shown in the diagram.
5
4
Relative
abundance

3
2
1
0
69

70

71

72

73

74

75

m/z
1 (a)

Define the term relative atomic mass.
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(2 marks)

1 (b)

Use data from the diagram to calculate the relative atomic mass of X.
Give your answer to one decimal place.
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(3 marks)

(02)

WMP/Jun13/CHEM1