The mole concept question: number of molecules, in 5.23g of glucose C6H12O6

formula used?

Formula:

No of molecules = (Weight in grams * N) / Molecular Mass, where N = Avogadro's number

here weight in grams = 5.23g
Molecular mass of glucose = 180

No of molecules = 5.23 * 6.022 * 10 ^ 23 / 180

= 1.749 * 10 ^ 22 (Answer)

1 gm mole of glucose C6H12O6 is 72 + 12 + 96 = 180.

You have 5.23 gm so the number of moles is 5.23/180 = 0.029

Number of molecules is 0.029 x 6.022 x 10^23 = 0.175 x 10^23 = 1.75 x 10^22