Recent content by rinchan4

awesome thank you!

ok so i figured it out thank you for your help. :) That pointed me in the right direction.

isn't it the equation for radiation?

Homework Statement You would like to put a solar hot wate system on your roof, but you'r not sure it's feasible. A reference book on solar energy shows that the ground-level solar intensity in your city is 850 W/m2 for at least 5 hours a day throughout most of the year. Assuming that a...

awesome thank you so much. I was able to figure out part b. Thank you! :)

so then... P= 101300 Pa n= 1000/18.02=55.49moles T= 308 k R=8.31 Solve for V and I get 1.402 m3

would be the same as the atmospheric pressure of 101300 Pa?

I tried using the density of vapor 0.0022(since i knew the mass of 1kg) and from that find the volume of 454.5m3 but that wasn't right

Yeah we didn't talk at all about vapor pressure and the only thing that it says in my book is that we can ignore vapor pressure if we keep the tempature low. I did find that the vapor pressure of water is 2.4 kPa and 20 degrees celcius.

I just need a hint to get going in the right direction. I'm thinking that this problem may have something to do with the phase diagram of water?

Homework Statement On a hot 35 degrees celsius day you perspire 1.0 kg of water during your workout. A) what volume is occupied by the evaporated water? B) By what factor is this larger than the volume occupied by the liquid water? Homework Equations PV=nRT PV=NKbT density of water...