Question #0dbab

1 Answer
Meave60
Mar 23, 2017

The percent composition of carbon in a glucose molecule is #40.002%#.

Explanation:

Determine the mass of one molecule of glucose. Then divide the mass of carbon by the total mass, then multiply by 100.

Mass of #"C"_6"H"_12"O"_6":##"180.156 u"#
https://www.ncbi.nlm.nih.gov/pccompound?term=glucose

Mass of #"C atom":##"12.011 u"# (periodic table)

Mass of #"C"# in glucose molecule: #"6"xx"12.011 u=72.066 u"#

Percent Composition of Carbon

#"% composition C"=(72.066"u")/(180.156"u")xx100"="40.002%"#

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