Question

Calculate the number of atoms present in 1 litres of h2 at n.t.p

Answer 1

we know that Stp/Ntp 1mole of any gas contains 22.4l of it . So, 22.4l of H2=1 mole
so 11.5l of H2 =(1* 22.4) * 11.5 mole =0.51mole of H2 gas
as 1 mole of H2= 6.022*1023 molecules of H2=2 * 6.022 * 1023 atoms of H2.
Hence 0.51mole of =2 * 6.022 * 1023*0.51 of H2.
=6.14 * 1023 atoms of H2