View Full Version : 3. 84 g of water at 22oC are mixed with 150 g of ethanol at 88oC.
dinz
Sep 15, 2012, 07:37 AM
84 g of water at 22 oC are mixed with 150 g of ethanol (C=2.44 J/g.oC) at 88 oC. Find the final temperature of the system.
Help asap... thanks
Unknown008
Sep 15, 2012, 07:39 AM
Heat gained by water = Heat lost by ethanol
Formula for each gain/loss: Q = mcT
Q is amount of heat,
m is mass of substance,
c is the specific heat capacity
T is the change in temperature. (Final temp. - Initial temp.)
What do you get?
dinz
Sep 15, 2012, 07:46 AM
The right answer is 55.7 oC but I don't know how it was solved.
dinz
Sep 15, 2012, 07:55 AM
if u plug in the values in your equation, it wouldn't give this final answer, could you show me the solution?
dinz
Sep 15, 2012, 07:57 AM
if u plug in the values in your equation, it wouldn't give this final answer (55.7 oC), could you show me the solution? I've been trying to find the solution but I couldn't find this answer.
Formula for each gain/loss: Q = mcT
Q is amount of heat,
m is mass of substance,
c is the specific heat capacity
T is the change in temperature. (Final temp. - Initial temp.)
What do you get?[/QUOTE]
Unknown008
Sep 15, 2012, 08:06 AM
Could you show how you plugged the values in the equation?