Question

How many moles are there in 34.5 gram of sodium.

Answer 1

Number of moles will be equal to given mass / molar mass

Given mass = 34.5 g

Molar mass of sodium  = 23g per mole

Number of moles = 34.5 / 23

So 1.5 moles are present in 34.5 g of sodium

Answer 2

Given:

Weight of sodium = 34.5g

To find:

Number of moles in sodium = ?

Formula to be used:

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

Calculation:

The molar mass of the given element sodium is 23g.

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

Number of moles = $\frac{34.5 g}{23g}$

Number of moles = 1.5

Conclusion:

1.5 moles are there in 34.5g of sodium.

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