If you have 39 g of sodium azide in an air bag [2nan3 (s) -> 2na (s) + 2n2 (g)], then how many molecules of nitrogen gas will it make at stp?

2nan3  -->2na  +3h2
calculate  the  moles   of   nan3  =39/65=0.6 moles
the   reacting  ratio  of   nan3  to  h2  is  2:3  therefore   the  mole  of   h2  formed  is ( 0.6  x3 )/2=0.9 moles
using  the  avogadros  law
1   mole=6.02  x   10^23,   what  about  0.9  moles
=0.9  x ( 6.02  x10^23)=5.418  x 10^23

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric