Question

What is the mass in gram of 3.011×10^3 molecules of NH3

Answer 1

molecular mass of NH3=17u

mass of one molecule of NH3=17*1.66*10^-24g

mass of 3.011*10^3 molecule = 17*1.66*10^-24*3.011*10^3

Answer 2

Answer:

n=no of molecules/avogadro no

Explanation:

n=3.011*10^3/6.023*10^23

0.5*10^-20