Question

How many moles are in 3.72 x 10^27 atoms of iron?

Answer 1

Answer: There are $0.617 \times 10^{4}$ moles present in $3.72 \times 10^{27}$ atoms of iron.

Explanation:

According to the mole concept, there are $6.022 \times 10^{23}$ atoms present in one mole of a substance.

Hence, moles present in $3.72 \times 10^{27}$ atoms are calculated as follows.

$Moles = \frac{3.72 \times 10^{27}}{6.022 \times 10^{23}}\\= 0.617 \times 10^{4} mol$

Thus, we can conclude that there are $0.617 \times 10^{4}$ moles present in $3.72 \times 10^{27}$ atoms of iron.