leshelly1432
contestada

Glucose (C6H12O6) is an important biological molecule.
(Round the answer to nearest hundredth.)
What is the percent by mass of carbon in glucose?

Respuesta :

superman1987

Answer:

40.0%.

Explanation:

  • The molar mass of glucose (C₆H₁₂O₆) = 6(atomic mass of C) + 12(atomic mass of H) + 6(atomic mass of O) = 6(12.0 g/mol) + 12(1.0 g/mol) + 6(16.0 g/mol) = 180 g/mol.

  • The atomic mass of C in glucose = 6(atomic mass of C) = 6(12.0 g/mol) = 72.0 g/mol.

∴ The percent by mass of carbon in glucose = [(The atomic mass of C in glucose)/(The molar mass of glucose)] x 100 = [(72.0 g/mol)/(180 g/mol)] x 100 = 40.0%.

Answer:

40% (a)

Explanation:

Option A- 40%, got it right on edge 2020

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