The mass of one mole of electron is

Question

The mass of one mole of electron is (A) 9.1 × 10-28 g (B) 0.55 mg (C) 9.1 × 10-24 g (D) 6 × 10-12 g

Tardigrade Admin · Accepted Answer

∵ Mass of one electron = 9.1 × 10-31 kg = 9.1 × 10-28 g ∵ Mass of 1 mole of electrons, i.e., mass of 6.023 × 1023 = 9.1 × 10-28 × 6.023 × 1023 electron = 5.48 × 10-4 = 0.00055 g = 0.55 mg

Q. The mass of one mole of electron is

$9.1 \times 1 0^{- 28} g$

0.55 mg

$9.1 \times 1 0^{- 24} g$

$6 \times 1 0^{- 12} g$

$∵$ Mass of one electron = $9.1 \times 1 0^{- 31}$ kg = $9.1 \times 1 0^{- 28}$ g $∵$ Mass of 1 mole of electrons, i.e., mass of $6.023 \times 1 0^{23}$
= $9.1 \times 1 0^{- 28} \times 6.023 \times 1 0^{23}$ electron
$= 5.48 \times 1 0^{- 4}$
= 0.00055 g
= 0.55 mg

Q. The mass of one mole of electron is

9.1×10−28g

0.55 mg

9.1×10−24g

6×10−12g

∵ Mass of one electron = 9.1×10−31 kg = 9.1×10−28 g ∵ Mass of 1 mole of electrons, i.e., mass of 6.023×1023 = 9.1×10−28×6.023×1023 electron =5.48×10−4 = 0.00055 g = 0.55 mg

$9.1 \times 1 0^{- 28} g$

$9.1 \times 1 0^{- 24} g$

$6 \times 1 0^{- 12} g$

$∵$ Mass of one electron = $9.1 \times 1 0^{- 31}$ kg = $9.1 \times 1 0^{- 28}$ g $∵$ Mass of 1 mole of electrons, i.e., mass of $6.023 \times 1 0^{23}$
= $9.1 \times 1 0^{- 28} \times 6.023 \times 1 0^{23}$ electron
$= 5.48 \times 1 0^{- 4}$
= 0.00055 g
= 0.55 mg