Member of the Month

je_t.aime_canard
January, 2025

Online

Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!

Specific Heat?

profile picture
Pudge
Posts: 3718 - Karma: 3,117
If 100 grams of boiling water at 100 degrees C is poured into a 100 g beaker of platinum at 0 degrees C, an intermediate temperature will result. Knowing that the specific heat of water is about 32 times larger than the specific heat of platinum, approximate the resulting temperate?

Please NS?
Oct 31 2011 11:20PM
0 0
profile picture
.AR6rider.
Posts: 15976 - Karma: 8,799
use MCdeltaT for each liquid. Delta T for the water will be (100-Tf) and Delta T for the Pt will be (Tf-0)

Start plugging in numbers and substitute some shit and you should get Tf eventually. Sorry if that doesn't really help I haven't done this shit in like 5 years haha.
Oct 31 2011 11:24PM
0 0
profile picture
EastCoast315
Posts: 3136 - Karma: 137
Click for larger image
Oct 31 2011 11:24PM
0 0
profile picture
Bart.Man
Posts: 1742 - Karma: 1,952
Hated doing specific heat last year. Have fun, wish I could help. Actually, no I dont wish I could help. Quit bein a lazy tit and do it yourself
Oct 31 2011 11:26PM
0 0
profile picture
JHendrix
Posts: 1493 - Karma: 48
OH GOD NOT THIS SHIT AGAIN TAKE IT AWAY
Oct 31 2011 11:26PM
0 0
profile picture
Pudge
Posts: 3718 - Karma: 3,117
i thought i was done with this in 8th grade. but nope junior year i am playing with water
Oct 31 2011 11:27PM
0 0
profile picture
e.wait
Posts: 869 - Karma: 1,954
fuck thermochemistry.
Oct 31 2011 11:28PM
0 0
profile picture
Loco-Deer-Slayer
Posts: 1401 - Karma: 701
Heat Lost by Water = Heat Gained by Pt
mass of water x dT of water x sp.ht. of water = mass of Pt x dT of Pt x sp.ht. of Pt
Let SH = sp.ht. of Pt, then sp.ht. water = 32SH

100 g x dT(w) x 32SH = 100 g x dT(Pt) x SH
dT(w) x 32SH = dT(Pt) x SH

Let s = final T of water and Pt; dTw = 100 - s and dT(Pt) = x - 0
(100 - s) x 32SH = (s - 0) x SH
3200 - 32 s = s
33 s = 3200
s = 97 C

Pt goes from 0 to 97 C; Water goes from 100 C to 97 C

Seem right?
Oct 31 2011 11:30PM
0 0
profile picture
why
Posts: 2064 - Karma: 65
\Click for larger image
Oct 31 2011 11:30PM
0 0
profile picture
Deezy
Posts: 4580 - Karma: 1,004
Chea, i would hand this shit in.

btw OP what course is this for grd 11 physics?
Nov 1 2011 12:02AM
0 0
profile picture
Pudge
Posts: 3718 - Karma: 3,117
its actually grade 11 chemistry, this is just a lab she assigned for fun when he had nothing to do. we just finished up a unit test on the mole theory and such. now we are moving into the quantum theory. not sure if that answered your question!
Nov 1 2011 12:19AM
0 0
All times are Eastern (-5)