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so i am going to use the ideal gas law... that is (p1v1)/t1=(p2v2)/t2

so if the gas is contained in a balloon, that means that the gas will still have the same amount of volume that it could fill so i am going to mulitiply v1 and v2 out so that i have

p1/t1=p2/t2

p1/293.15 K=0.710/ 278.75 K

p1=0.74667 atm

and now for the ratio...i am not sure if it is p1/p2 or p2/p1....but i think it may be p1/p2 and i get 1.05

either way i do the raito i still get the worng answer...please help me