Wednesday, August 29, 2012

chemistry

A sample of oxygen gas in a closed system has a volume of 200 milliliters at 600 K. If the pressure is held constant and the temperature is lowered to 300 K, the volume of the gas will be

*A. 100 ml 
B. 200 ml
C. 300 ml
D. 400 ml

Which sample of water will have the highest water pressure? 

*A. 10.0 mL at 62° C 
B. 20.0 mL at 52° C
C. 30.0 mL at 42° C
D. 40.0 mL at 32° C

 An assumption of the kinetic energy of gases is that the particles of a gas have 

A. Little attraction for each other and a significant volume
*B. Little attraction for each other and an insignificant volume 
C. Strong attraction for each other and a significant volume
D. Strong attraction for each other and an insignificant volume

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