MCQ Solution: Mole Concept
A person adds 1.71 gram of sugar (C12H22O11) in order to sweeten his tea. The number of carbon atoms added are (mol. mass of sugar = 342)
1) 7.2 x 1021
2) 3.6 x 1022
3) 6.6 x 1022
4) 0.05
SOLUTION
The number of moles is the ratio of mass to molar mass.
Moles of Sugar
The number of molecules is the product of the number of moles and Avogadro's number NA=6.023×1023.
Number of molecules = NA /200
Number of C atoms
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