The gas 0.735/0.523=1.405moles.
so 1.405 times of gas is present than what was at the start. 0.523moles of argon took up 0.723L(723mL) so 1.405 times as much gas would take 1.405 times as much space. so the volume would be ,
1.405*0.723=1.015L
I think the answer is a. and d.
hope this helps!!
Answer:
12
my advice is split the equation into 2 and write on each side how many atoms of each element are there and it will be easier to balance.