Question

10. How many mega coulombs of positive or negative charge are in 1 mole of a
neutral
molecular hydrogen gas?​

Answer 1

In every molecule of H2 there are 2 electrons.So total no. of electrons in 1 mole is = 2*6.022*1023 .

As charge on 1 e is 1.6*10-19 coulombs.

Thus total charge = 2*6.022*1023*1.6*10-19 coulombs=19.2704*104 coulombs=19.2704*10-2 mega coulombs.

Answer 2

Answer:

One mole of a neutral H₂ gas has 0.1927 mega coulombs of positive or negative charge.

Explanation:

We know that

The charge on one electron or one proton $=1.6*10^{-19}C$

One H-atom has 1electron and 1 proton.

One mole of H₂ gas contains $=2*6.023*10^{23} Hatoms$

The charge on 1 mole of H₂ gas  $=(2*6.023*10^{23})(1.6*10^{-19})C$

Total positive or negative  charge $=19.27*10^{4}C\\=0.1927MC$

Therefore in 1mole of H₂ gas +ve or -ve charge equals to 0.1927MC.