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Atomic Number and Mass Number

The total mas...

Question

The total mass of 1mole electron is (mass of 1e-=9.1*10^-28g)

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Solution

1 electron has a mass of 9.1 × 10¯³¹ kg.
1 mole has 6.023 x 10²³ particles.
So 1 mole of electrons has a mass of
9.1 ×10¯³¹ × 6.023 × 10²³ ≈ 5.481 × 10^(-7) kg.

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