|Jan31-11, 09:42 PM||#1|
How much energy does it take to heat a block of ice
1. The problem statement, all variables and given/known data
How much energy is required to change a 35 g ice cube from ice at −15 C to steam at 117 C?
The speciﬁc heat of ice is 2090 J/kg * C, the speciﬁc heat of water is 4186 J/kg * C, the speciﬁc heat of stream is 2010 J/kg * C, the heat of fusion is 3.33 × 10^5 J/kg, and the heat of vaporization is 2.26 × 10^6 J/kg.
Answer in units of J.
2. Relevant equations
3. The attempt at a solution
35g*15C*2090J/kg*C - heat to raise ice's temp. to freezing
+ 3.33 * 10^5 J/kg *35g - heat to melt ice into water
+ 100C *4186J/kg*C *35g - heat to raise water temperature to boiling
+ 2.26*10^6 J/kg* 35g - heat to boil water into vapor
+ 2010 J/kg*C *117C *35g - heat to make vapor rise to 117 C
I tried this answer and the program says it's incorrect, what am I doing wrong?
|Jan31-11, 10:06 PM||#2|
The steam only has to rise 17C in temperature from 100C to 117C.
|Feb1-11, 05:14 PM||#3|
Thanks for your help... I completely missed that, I guess that's what I get for trying to do physics late at night. :)
|energy, heat, latent heat, melting ice|
|Similar Threads for: How much energy does it take to heat a block of ice|
|Heat and Internal Energy and Heat and Temperature Change: Specific Heat Capacity||Advanced Physics Homework||4|
|Heat Energy and Change in Temperatur Problem - Bullet Kinetic Energy into Heat Energy||Introductory Physics Homework||5|
|Removing heat energy from a block of ice||Introductory Physics Homework||7|
|Bullet fired into wooden block. Trying to find kinetic energy of bullet and block.||Introductory Physics Homework||1|
|Block hits block with spring. Conserv of Energy and Momentum?||Introductory Physics Homework||6|