Question

What is the mass in grams of 5 moles of iron (Fe)

Answer 1

1 mol of he is 53.5
..then..5 mol of iron is = 53.5×5 =

Answer 2

Answer: 279.225 g

Explanation: According to Avogadro's law, 1 mole of any substance contains Avogadro's number of particles which is $6.023\times 10^{23}$ and weighs equal to the molecular mass of the substance.

Molecular mass of $Fe$= 55.845 g/mol

1 mole of Fe weighs= 55.845g

5 moles of Fe weigh=$\frac{55.845}{1}\times 5=279.225g$