Question

what is number of electronin 100 g of water .what is total negative charge on it​

Answer 1

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Answer:

5.55 moles of water contain 10 × 5.55 = 55.5 mole of electrons.

Explanation:

We know that, 1 mole of a substance contains Avogadro number of atoms/ions/electrons/molecules= N

A

=6.022×10

23

Each molecule of water contain 10 electrons

Mass of 1 mole of H

2

O=18g=10N

A

number of electrons

Therefore, 1 gram of H

2

O contains =

18

6.022×10

24

number of electrons.

So, 100 gram of H

2

O contains =100×

18

6.022×10

24

number of electrons.

Total negative charge carried by these electrons =

18

1.6×10

−19

×100×6.022×10

24

coulomb.

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