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22 g of benzene is dissolved in 122 g of carbon tetrachloride. What is the mass percentage of benzene?
A15.3%
B18.0%
C84.7%
D22.0%
Answer & Solution
Correct answer: A. 15.3%
Total mass is 144 g, so benzene is 22/144 × 100 = 15.3 percent by mass.
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