Question

How many moles of iron are in 2.34 x 10^22 iron atoms?

Answer 1

.03886 grams or 3.886 x 10^‐2 grams

steps

avogadros number

6.022×10²³ atoms of ANY ELEMENT = 1 mole

whats different for every element is the number of GRAMS or MASS

1 mole of iron is 55.847 grams

2.34 x 10²² ÷ 6.022×10²³ =

.03886 grams or

3.886 x 10^‐2 grams