The rest mass of an electron is 9.11 × 10-31 kg . Molar mass of the electron is:

Question

The rest mass of an electron is 9.11 × 10-31 kg . Molar mass of the electron is: (A) 1.5 × 10-31 kg mol -1 (B) 9.11 × 10-31 kg mol -1 (C) 5.5 × 10-7 kg mol -1 (D) 6.02 × 1023 kg mol -1

Tardigrade Admin · Accepted Answer

Mass of 1 mole of electrons =9.11 × 10-31 kg × 6.02 × 1023 =5.5 × 10-7 kg mol -1

Q. The rest mass of an electron is $9.11 \times 1 0^{- 31} k g .$ Molar mass of the electron is:

$1.5 \times 1 0^{- 31} k g m o l^{- 1}$

$9.11 \times 1 0^{- 31} k g m o l^{- 1}$

$5.5 \times 1 0^{- 7} k g m o l^{- 1}$

$6.02 \times 1 0^{23} k g m o l^{- 1}$

Mass of 1 mole of electrons

$= 9.11 \times 1 0^{- 31} k g \times 6.02 \times 1 0^{23}$

$= 5.5 \times 1 0^{- 7} k g m o l^{- 1}$

Q. The rest mass of an electron is 9.11×10−31kg. Molar mass of the electron is:

1.5×10−31kgmol−1

9.11×10−31kgmol−1

5.5×10−7kgmol−1

6.02×1023kgmol−1