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CAIE A-Level Chemistry AS 2.1.2 Atomic Mass Ar Isotopic Mass Questions

Practise defining and calculating relative atomic, isotopic, molecular and formula masses from isotope, molecular and formula composition data.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Define relative atomic, isotopic, molecular and formula masses in terms of the unified atomic mass unit, and calculate them from composition data.

CAIE A-Level Chemistry AS 2.1.2 Atomic Mass Ar Isotopic Mass Questions question 1

[Maximum number: 1]

Which sodium compound contains 74.2 % by mass of sodium?

A

sodium carbonate

B

sodium chloride

C

sodium hydroxide

D

sodium oxide

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