#### Question

Calculate the number of electrons which will together weigh one gram.

#### Solution

Mass of one electron = 9.10939 × 10^{–31} kg

∴ Number of electrons that weigh 9.10939 × 10^{–31} kg = 1

Number of electrons that will weigh 1 g = (1 × 10^{–3} kg)

`= 1/(9.10939 xx 10^(-31)) xx (1xx10^(-3) kg)`

= 0.1098 × 10^{–3 + 31}

= 0.1098 × 10^{28}

= 1.098 × 10^{27}

Is there an error in this question or solution?

Solution Calculate the Number of Electrons Which Will Together Weigh One Gram. Concept: Subatomic Particles - Discovery of Electron.