Question

How many moles of aspirin C9H8O4, are in a bottle comtaining 450g by weight? (The approx atomic weights are C=12, H=1, O=16)

Answer 1

molar mass approx 9*12 + 8*1 + 4*16 = 108 +8 + 64 = about 180
mols = grams/molar mass = ?

Answer 2

2.5 MOLES

A/ 1 MOLE = 180 gm
x MOLE= 450 gm
X=450/180=2.5 MOLES