Question

calculate no. of moles and molecule present in 90 gm of urea​

Answer 1

Answer:

Molar mass of urea =60g.

No. of moles mass =given mass mass

=5.6/60

=0.09 moles.

No. of Molecules =

Avegadro no. *moles

=6.022*10^23*0.09

= 0.56.

*10^23 Molecules are present.