how many mega coulombs of positive (or negative) charge are in 1.00 mole of neutral molecular hydrogen gas ?

or it will contain 2.00 mol of hydrogen nuclei/electron/proton

1 mol electron/proton has 1farad charge=96500coulomb=9.65×10e-2 MCoulomb

hence 2.00 mol will have 0.193MCoulomb charge

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.