Question

calculate the number of moles in 100g of iron

Answer 1

Atomic Mass of iron =56g
Given mass =100g
So, no. Of moles=given mass/atomic mass
So, 100/56
1.78 moles is the and.

Answer 2

Given:

Weight of iron = 100g

To find:

Number of moles in iron = ?

Formula to be used:

Number of moles = $\frac{Given mass}{Molar mass}$

Calculation:

The molar mass of the given element iron is 55.8g

∴ Number of moles = $\frac{Given mass}{Molar mass}$

Number of moles = $\frac{100g}{55.8g}$

Number of moles = 1.79

Conclusion:

1.79 moles are there in 100g of iron.

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