The molar mass of sucrose open paren cap c sub 12 cap h sub 22 cap o sub 11 close paren is 342 point 3 g over mol A chemist has a 0 point 5 0 0 -mol sample of sucrose. What is the mass, in grams, of this sample?

Multiply the amount of sucrose by its molar mass: 0.500 mol × 342.3 g/mol = 171.15 g. Rounded to three significant figures, the sample has a mass of 171 grams, which is choice A.

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