text: okay, all annoying come-ons aside...\n\nThis is indeed an Ideal Gas Law problem. Here is how to solve it:\nPV=nRT\nP=pressure in atm\nV= volume in cm3\nn= no of moles\nR= universal gas law constant\nT= temperature in Kelvin\n\nP1= 2atm\nP2 =1 atm\nV1= 2 cm3\nV2= ?????\nT1= 7 C = 280K\nT2= 20 C= 293 K\n\nso, it follows for P1V1=n1R1T1\nthat 2*2=nR *280\nnR=4/280=0.0142857\n\nthen for P2v2=n2R2T2\n\n1*V2=0.142857 *293\nV2 = 4.19 cm3