1.

How many coulombs of positive charge are in 1.30 mol of neutral molecular-hydrogen gas (H2)?

Answer» Hydrogen atom has got 1 proton in its nucleus. 1.3 mole H2 molecules means 2 .6 mole H atoms. So total positive charge is due to 2.6mole proton or 2.6×6.023×10^23  proton.

Each proton contains 1.602×10^-19C positive charge. Hence total positive charge in 1.3 mole H2 molecules will be =2.6×6.023×10^23×1.602×10^-19C


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