Question: how many molecules of sucrose c12h22o11?
Answer: Moles of sucrose=454⋅g342.30⋅g⋅mol−1=1.33⋅mol . Now it is a fact that in a mole of stuff there are 6.022×1023 individual items of stuff......... So 1.33⋅mol×6.022×1023⋅mol−1≅8×1023 individual sucrose molecules.