Question

13.8g element consist 4.6 ×10^22 atoms what is atomic mass of element?​

Answer 1

~Solution :-

• Here, to find the atomic mass of element, we must;

We know that,

• 4.6 x $ \sf{10^{22}}$ atoms of an element weigh 13.8g.

Thus,

The atoms of $ \sf{ 6.02 \times 10^{13}}$ will weigh;

`= \sf{\frac{13.8 * 6.02 * {10}^(23) }{4.6 * {10}^(22) } } \\`

`= \sf{180.6 \: g \: \: (molar \: mass)}`

• Hence, the molar mass (atomic mass) will be 180.6 g.