A 265 ML ROUND-BOTTOMED FLASK CONTAINING 0.650G OF A GAS WAS COLLECTED AT A TEMPERATURE OF 25.0 CELECIUS AND 735 TORR PRESURE.CALCULATE THE MOLAR MASS OF THIS GAS
Celcius, gram is abreviated by g, not G
Pv=nRT
PV=(.650/molarmass)RT
convert Temp to Kelvins, then put in P, V, T, using R for ml,torr, and you will have the ability to solve for molarmass.
Avoid using capital letters, it is difficult to read, and very unsocialbe (ITS SHOUTING).