Recent content by nsw

The temperature change is of the fluid in the beaker which goes from 66 to 29 degrees celsius.

yes it does talk about temperature change

Oh Yah! Thanks a Bunch!

Where does the 500 come from?

Q=mass*specific heat*change in temp. But how does this help me?

How do you solve V(1.29)= 500000+V(0.178) and is this really your answer?

Sorry, but i am still confused about this problem.

How are you supposed to solve this equation with two unknowns?

heat of vaporization Doesn't it have to do with the Qlost=Qgain

I can't seem to figure this simple helium balloon problem out? I would really appreciate some help? Thanks! Estimate the volume of a helium-filled balloon at STP if it is to lift a payload of 500 kg. The density of air is 1.29 kg/cubic meter and helium has a density of .178 kg/cubic meter...

Help!---heat Of Vaporization I could really use some help with this please! 125 grams of dry ice (solid CO2)is dropped into a beaker containg 500 grams of 66 degree celsius water. The dry ice converts directly to gas, leaving the solution. When the dry ice is gone, the final temperature of...