Question

The exact mass of 1 mole of carbon-12 atoms is:
a) 12.00g of pure carbon-12
b)6.02x10^23g of carbon
c)6.02x10^23 carbon atoms
d)6.00 amus of pure carbon-12

Answer 1

ok so you are asked for mass of 1 mole of C12 now lets see how can we calculate that..
n= 1mol
M=12
n=m/M --> m=n*M= 1 mol * 12 gmol-1 = 12 g