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Date	May 2015	Marks available	1	Reference code	15M.1.sl.TZ1.3
Level	SL	Paper	1	Time zone	TZ1
Command term		Question number	3	Adapted from	N/A

Question

Which compound has the highest percentage of carbon by mass?

A. ${\text{C}}{{\text{H}}_{\text{4}}}$

B. ${{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}$

C. ${{\text{C}}_{\text{4}}}{{\text{H}}_{{\text{10}}}}$

D. ${{\text{C}}_{\text{6}}}{{\text{H}}_{\text{6}}}$

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Syllabus sections

Core » Topic 1: Stoichiometric relationships » 1.2 The mole concept

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