What total volume (in lhter at 600 C and 1atm.) could be formed by the decomposition of 16g of NH4NO3 ?

Answer 1

write the balanced equation

ammonium nitrate>Nitrogen + hydrogen+ oxygen

balance that.
Now how many moles of ammoniumnitrate is 16grams? What does that tell you the moles of gases you have? use that for n in PV=nRT

Answer 2

50.14 litre