Wednesday, February 10, 2010

Science, Chemistry Questions true or false?

If temperature is held constant for an ideal gas, as P and V change for a given gas sample, the PV products will be constant.





true or false





The state of water is determined solely by the conditions of pressure and temperature.





true or falseScience, Chemistry Questions true or false?
#1 At a constant temperature,the pressure of an ideal gas is inversely proportional to its volume.


PV = constant


True.








as for #2 ,it depends on pressure,temp ,and the planet's gravity





';The state of water also depends on a planet's gravity. If a planet is sufficiently massive, the water on it may be solid even at high temperatures, because of the high pressure caused by gravity.';Science, Chemistry Questions true or false?
When you increase volume, pressure increases. (like filling up a balloon (makes the balloon more fimer (unless it pops) ) )





When you decrease volume, the pressure decreases. (like deflating a balloon)





So the first one is true.





The second one, if you change the temperature to freezing, it's ice. Change the temperature to boiling, it's gas. I'm not so sure whether pressure affects the state of water, but temperature definatley does.





So I'm not sure on that last one, sorry.
PV/T = k and since T is kept constant, PV = k


as pressure increases, volume decreases and as pressure decreases, volume increases


The first statement is true

No comments:

Post a Comment