Question

how many electrons and charge are in 100 grams of water?​

Answer 1

Answer:

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.

Answer 2

Answer:

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