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

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Numerical

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

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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 × 1028

= 1.098 × 1027

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Chapter 2: Structure of Atom - EXERCISES [Page 69]

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NCERT Chemistry Part 1 and 2 Class 11
Chapter 2 Structure of Atom
EXERCISES | Q 2.1 - (i) | Page 69

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