Question

If a sample of pure cadmium has a mass of 18.2 grams, how many moles of cadmium are in the sample?

Answer 1

moles = grams/molar mass.

Answer 2

moles=mass/ram
then,
moles=18.2g/112.411=0.1619

therefore 18.2g of pure Cd = 0.1619 moles