Transcript u8-7 unit 7 review

PERCENT COMPOSITION
Skunk spray contains a molecular
compound that chemists believe is
partly responsible for its odor. The
formula for this compound is C5H10S2.
Calculate the percent composition of
each element in this compound.
44.7% C, 7.45% H, and 47.8% S
U8-7 Unit 7 Review
EMPIRICAL FORMULA
Triclosan is an antibacterial agent
included in detergents, dish soaps,
laundry soaps, deodorants, cosmetics,
lotions, creams, toothpastes, and
mouthwashes. Triclosan is composed
of 49.74% carbon, 2.420% hydrogen,
36.79% chlorine, and 11.05%
oxygen. Determine the empirical
formula of triclosan.
C12H7Cl3O2
U8-7 Unit 7 Review
MOLECULAR FORMULA
According to WebMD, caffeine
stimulates the human central nervous
system, and its regular use can lead
to mild physical dependence. The
empirical formula for caffeine is
C4H5N2O. What is the molecular
formula for caffeine if its molecular
mass is 194.0 g/mol?
C8H10N4O2
U8-7 Unit 7 Review