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CAIE A-Level Chemistry M.1 Arithmetic, Percentages and Significant Figures

Practise accurate arithmetic, estimation, rounding, percentage calculations and means in chemical data.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

M.1—Arithmetic, rounding, percentages, means and significant figures question 1

[Maximum number: 1]

The model of the nuclear atom was first proposed by Ernest Rutherford. He developed this model on the basis of results obtained from an experiment using gold metal foil.

Tumbaga is an alloy of copper and gold. A sample of tumbaga was analysed. The mass spectrum of the sample is shown.

Figure for Question M.1—Arithmetic, rounding, percentages, means and significant figures question 1 — CAIE A-Level Chemistry AS

Calculate the percentage abundance of gold, x, in the sample of tumbaga.

x= % [1] \begin{aligned} & x= \\ & \text { \% [1] } \end{aligned}
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