Question

How many molecules are present in 0.2gm of hydrogen?

Answer 1

Hello...

Required answer is ___

Molar mass of H2 is 2g

2g of H2 Contains $6.023\times10^{23} molecules

200mg = 0.2 g

0.2 g of H2 Contains --------?

=0.2×6.023×10232=6.023×1021 molecules

Hope it helps..

Pless mark brainliest ☺

The number of molecules present in 0.2 g of H2is2.737×1021