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The mass percent of carbon in pure glucose, C6H12O6, is 40.0 percent. A chemist analyzes an impure sample of glucose and determines that the mass percent of carbon is 38.2 percent. Which of the following impurities could account for the low mass percent of carbon in the sample?

Responses

Water, H2O

Water, H 2 O

Ribose, C5H10O5

Ribose, C 5 H 10 O 5

Fructose, C6H12O6, an isomer of glucose

Fructose, C 6 H 12 O 6 , an isomer of glucose

Sucrose, C12H22O11