Mixing different temperatures of water...?

by Dmitri10
Tags: mixing, temperatures, water
Dmitri10 is offline
Jan13-10, 10:08 PM
P: 19
"What would be the final temperature if you mixed a liter of 20 degrees C water with 2 liters of 40 degrees C water?"

My teacher assigned us several problems like these without bothering to explain them. I have a hunch that they are embarrassingly simple to complete, but I know not how to find the solutions. The only equation we've been given to this point is Q = mcΔT.

ANY help would be appreciated. Thanks in advance.
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
Dick is offline
Jan13-10, 10:31 PM
Sci Advisor
HW Helper
P: 25,170
Q is the heat energy. The amount of heat coming out of the hotter water is equal to the amount of heat going into the cooler water. Suppose the final temperature is T (somewhere between 20 and 40 degrees). Find the change in heat for each mass of water and equate them. Then solve for T.

Register to reply

Related Discussions
Formula: final temperature when mixing water with water Introductory Physics Homework 5
Formula for mixing liquids of different temperatures? General Physics 4
Mixing ice with water Introductory Physics Homework 2
Water mixing problem General Math 2
Mixing oil and water Chemistry 0