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cane pamela Grade:
        
A sample of Helium occupies 200 L at 30ºC under a pressure of 970 torr. What is the volume it occupies at standard temprature and pressure (STP)?
6 years ago

Answers : (1)

Anurag Kishore
37 Points
										

Hi, Cane


 


Use ideal gas eqn


P V/ T = constant


Here


P1  = 970 TORR     V1 = 200L      T1 = 30 + 273 = 303 K


P2 = 760 TORR ( AT STP)


V2 = x          T2 = 25 + 273 = 298 K


 


Now use


970 * 200/ 303 = 760 * x/ 298


=> x = 251.05 L


 


Thanks

6 years ago
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