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Post  JasonGHerbalExt on Tue Jan 13, 2015 10:11 pm

Vanillin, C8H8O3 (M = 152 g/mol), is the molecule
responsible for the vanilla flavor in food. How many
oxygen atoms are present in a 45.0 mg sample of
vanillin?
(A) 1.78 × 10^20 (B) 5.35 × 10^20
(C) 1.78 × 10^23 (D) 5.35 × 10^23

JasonGHerbalExt

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