Question

how many coulombs of charge present in 2.0 moles of neutral hydrogen gas

Answer 1

Charge on 2 moles of neutral hydrogen gas is - 384000 C.

Number of electrons in a hydrogen molecule is 2.

Thus number of electrons in 1 mole of hydrogen will be -

2 * Avogadro's number.

Hence number of electrons in 2 mole of hydrogen gas will be - 2 * Avogadro's number * 2

Avogadro's number = 6.022*10^23

Thus, number of electrons in 2 mole of hydrogen is - 2.4*10^24

Charge on one electron is - 1.6*10^-19 C

Thus charge on 2 mole of hydrogen gas is - 2.4*10^24*1.6*10^-19

Charge on 2 mole of hydrogen gas = 384000 C or 3.84*10^5 C.