Question

write the formulas for the following:
1)find mass when number of moles given
2)find number of moles when mass is given
3)find number of moles when number of particles are given
4)find the number of particles when mass is given

Answer 1

There are two basic formulas as given below:

Number of moles = $\frac{Givenmass}{Molarmass}=\frac{Numberofparticles}{N_A}$

On interconnecting the two, every value can be found out.