Question

A person adds 1.71 gram of sugar.in order to sweteen his tea.the number of carbon atoms added are

Answer 1

Sugar is nothing but sucrose, which has a formula of C₁₂H₂₂O₁₁ and a molecular weight of 342.

number of moles of sucrose in 1.71 grams = 0.005

1 mole of sucrose contains Avogadro number(6 x 10²³) of sucrose molecules.
As each molecule of sucrose has 12 carbon atoms,
1 mole of sucrose contains 12( 6 x 10²³) of carbon atoms.

Therefore 0.005 moles of sucrose contains 0.005 x 12( 6 x 10²³)
                                                                 = 3.6 x 10²² atoms of carbon are                                                                         added

:)