Question

How many electron in 40gm water

Answer 1

Answer:

HEY THERE.....HERE YOU GO

Explanation:

In 40g of water, the number of moles = mass/molar mass

=40/18              ------->(molar mass of water is 2+16=18)

=20/9

Number of molecules in one mole=20/9 *avagadro no.

=>[20/9 * 6.023 * 10^23]

And in each water molecule there are 10 electrons(2 from 2 'H' and 1 from 'O' )

therefore the total number of electrons is [20/9 * 6.023 * 10^23 * 10]

so that will be the answer

sorry I am not calculating because i am in hurry to attend a class

hope this helps