What is the percent-by-mass concentration of antifreeze (ethylene glycol, C2H6O2) in an aqueous solution that contains 420.0 g of ethylene glycol in 1.00 L of solution? The density of the solution is 1.05 g/mL.
A) 2.50%
B) 42.1%
C) 40.0%
D) 44.1%
E) 60.0%
Correct Answer:
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