How many moles are present in a 34.0 g sample of iron metal?
Determine the molar mass of iron. Then divide the given mass by its molar mass, or multiply the given mass by the reciprocal of the molar mass, which is more common.
Molar mass is the mass of one mole of an element or compound.
Another way to indicate molar mass is as follows:
Determine moles of Fe present in
Multiply the given mass by the reciprocal of the molar mass.