Chemistry moles help

Please could I have help on part 2 vi on this question? I have attached the question with the markscheme but basically what I did was used my answer to v and then divided it by 2 and multiplied by 3 to get the moles of equation 1 and then the moles of sodium nitrate would be equal to that but the markscheme says something else? Thank you

Please could I have help on part 2 vi on this question? I have attached the question with the markscheme but basically what I did was used my answer to v and then divided it by 2 and multiplied by 3 to get the moles of equation 1 and then the moles of sodium nitrate would be equal to that but the markscheme says something else? Thank you

Please could I have help on part 2 vi on this question? I have attached the question with the markscheme but basically what I did was used my answer to v and then divided it by 2 and multiplied by 3 to get the moles of equation 1 and then the moles of sodium nitrate would be equal to that but the markscheme says something else? Thank you

The ratio between 3NaNO3 : 3NH3 is 1:1
The only thing you need from the second equation is the moles of NH3. The reason being because the second equation shows what happens to the ammonia gas produced - you worked out the moles from it

you substituted the second equation of ammonia into the first one, which is why you did moles of ammonia x 3/2.

Thanks but shouldn’t you substitute it to compare the moles from the second equation to the first equation because they’re different? Like 3/2 moles are reacting?