The number of electrons which will together weigh one gram is

Question

The number of electrons which will together weigh one gram is (A) 1.098 × 1027 electrons (B) 9.1096 × 1031 electrons (C) 1 electron (D) 1 × 104 electrons

Tardigrade Admin · Accepted Answer

Mass of an electron = 9.1096 × 10-31 kg 1 g or 10-3 kg=(1/9.1096 × 10-31) ×10-3 =1.098 × 1027 electrons

Q. The number of electrons which will together weigh one gram is

$1.098 \times 1 0^{27}$ electrons

$9.1096 \times 1 0^{31}$ electrons

$1$ electron

$1 \times 1 0^{4}$ electrons

Mass of an electron $= 9.1096 \times 1 0^{- 31} k g$
$1 g$ or $1 0^{- 3} k g = \frac{1}{9.1096 \times 1 0 ^{- 31}} \times 1 0^{- 3}$
$= 1.098 \times 1 0^{27}$ electrons

Q. The number of electrons which will together weigh one gram is

1.098×1027 electrons

9.1096×1031 electrons

1 electron

1×104 electrons

Mass of an electron =9.1096×10−31kg 1g or 10−3kg=9.1096×10−311​×10−3 =1.098×1027 electrons

$1.098 \times 1 0^{27}$ electrons

$9.1096 \times 1 0^{31}$ electrons

$1$ electron

$1 \times 1 0^{4}$ electrons

Mass of an electron $= 9.1096 \times 1 0^{- 31} k g$
$1 g$ or $1 0^{- 3} k g = \frac{1}{9.1096 \times 1 0 ^{- 31}} \times 1 0^{- 3}$
$= 1.098 \times 1 0^{27}$ electrons