Be sure to answer all parts.
Cinnamic alcohol is used mainly in perfumery, particularly in soaps and cosmetics. Its molecular
formula is C₂H100.
(a) Calculate the percent composition by mass of C, H, and O in cinnamic alcohol.
H
%
x 10
%
%
(b) How many molecules of cinnamic alcohol are contained in a 0.233-g sample?
molecules
(Enter your answer in scientific notation)
