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 * Combined

** The combined gas law is the relationship between pressure volume and temperature of a fixed amount of gas.

Vı Pı = V2 P2 Tı T2 V= Volume P= Pressure T= Temperature

Example: The volume of a gas is 27.5 mL at 22 C and .974 atm. What will the volume be at 15 C and .993atm?(Convert C in K (C+273=)) V2 = Pı Vı T2

P2 Tı (.974 atm)(27.5 mL)(288K) 7714.08 -- = -- = 26.33 mL (295K)(.9936 atm) 295.993