Question

Find out no. Of electron in 1.6g of ch4

Answer 1

In 1 mole of ch4 i. e. 16 g ch4 there is avogadros number of electrons
So in 1.6 g there will be 6.022 × 10^23/10e
=6.022×10^22

Answer 2

It means 0.1 mol CH4.
hence no of molecule=6.022 ×10 raise to 22
In one CH4 no. of e=10
hence no of e=6.022 ×10 raise to 22 ×0.1
=6.022 ×10 raise to 21