Question

7.0 gm of Na. calculate the number of molecules​

Answer 1

Number of molecules in 7 g of Na are 3.14.

Given:

Na = 7 gm

To Find:

The number of molecules in 7 gm of Na.

Solution:

We know that,

Number of moles in Na = 22

Number of moles = Given weight/molar weight

Number of moles = 7/22

Number of moles = 3.14

Hence, Number of molecules in 7gm of Na are 3.14.