We are asked to calculate the mass percent compositions of C, H, and O in aspirin, and to do that we’re going to use the mass percent formula shown below:
Given: mass sample = 0.45 g
mass C = 0.27 g
A 0.45-g sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g C, 0.020 g H, and 0.16 g O.
Calculate the mass percent compositions of C, H, and O in aspirin. Express your answers to two significant figures separated by commas.
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