Question

Calculate the number of moles in 7.85 g of iron ​

Answer 1

Answer:

To convert grams into number of moles, divide by the molar mass also called standard atomic weight. This is found on the periodic table. For Fe, it's 55.845 g/mol. So 7.85 / 55.845 = 0.141 mol.

Answer 2

The number of moles in 7.85 g of iron is 0.140 mol​

we have to calculate the moles in element Fe

Explanation:

Given,number of moles in 7.85g of iron

Atomic Mass of Fe is 56 u

Moles of Iron = Mass of Iron/Atomic Mass

= 7.85÷56

=0.140 mol

The number of moles is 0.140 mole