Question

the number of atoms in 4.25g of NH3 is approximately​

Answer 1

molar mass of NH3:14+3*1

=17g

no. of moles of NH3 in 4.25 g :

=given mass /molar mass

=4.25/17

=0.25 moles

no. of atoms in 0.25 moles of NH3:

=0.25*6.022*10^23

=1.5055*10^23 atoms