thanks for catching me on the iron cup lol i forgot all about that i saw the proplem of revered temps when i did the equation so i fixed that the vaper point of alcohol is like 118 i think so thankfully i didn't ahve to worry about that and the cup wasn't supposed to loose any heat
thanks for...
then for b it would be (assuming the top is correct and i did cacls right it should be 37417.6 cals)
37417.6=(m)(.58)(-5-78)+(m)(25)+(m)(.58)(78-96)
that look correct?
so for a it would be Q=(200g)(.5)(-5-0) (to change from ice to a liquid) + (200g)(79.7)(latent heat)+(200g)(1)(0-96)
do i just add on the aluminum q then to that ?
Qalum=(80g)(.22)(-5-96)
looking at it i believe i do just add that on but i would like to make sure I am rite lol
got a proplem that i just can't seem to get
200g of water is placed in a 80g aluminum cup and left undesturbed in a freezer until it reaches -5c the cup is then taken out and heated to 96c
a. how much heat is needed to increase the temp (from the -5c to 96c)
b. replace the alum cup with an...