Question

Calculate the no. Of.Oxygen atom in 0.2 mole of na2co3.10h2o

Answer 1

Answer:

1 mole of [na2co3.10h20] known as washing soda contains 6.022*10^23 molecules.

Hence 0.2 moles will contain- 6.022*10^23*0.2 molecules

=1.2044*10^23 molecules.

1 molecule of washing soda contains 13 atoms of oxygen [according to chemical formula]

hence 1.2044*10^23 molecules will contain

- 13*1.2044*10^23 atoms of oxygen

=15.6572*10^23 atoms of oxygen..

Explanation: