study material, CBSE Notes

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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