Question

which molecules contains highest number of molecules a)1 gm co2 b) 1 gm ch4 c) 1 gm n2 d) 1 gm h2 give reason please

Answer 1

It is option (d)
As molecular mass of h2=2
No. Of moles=weight given /molecular mass
Therefore, No. Of moles in h2= 1÷2
=1/2
No. Of molecules= No. Of moles. Avogadro Number (Avogadro number =6.022*10 to the power 23)

Therefore, No. Of molecules=1/2*6.022*10 to the power 23
=3.011*10 to the power 23 is the answer