Question

Glucose has the molecular formula C 6 H 12 O 6 . (Atm mass C=12, H=1,
O=16)
Calculate:
(i) Formula mass
(ii) the number of molecules in 18g of glucose.

Answer 1

Answer:

Glucose has six carbons, twelve hydrogen, and six oxygen atoms. Using the periodic table, the atomic weight of C, H, and O are obtained. So the molar mass of C6H12O6 is 72.06 g + 12.096 g + 96.00 g = 180.156 g or 180.16 g (right number of significant figures).