Achieve week 3&4 #9

[andrea guzman 1F]

If you combine 430 ml of water at 25 C and 130 ml of water at 95 C what is the final temperature of the mixture? Use 1.00g/mL as the density of water

I have mc dT (cold water) = - mc dT (hot water)
and dT (cold water)= (T final - 25C)
dT (hot water)= (T final - 95C)
but when i solve for final temperature I keep getting 95 C is my setup wrong?

[106046096]

Hi! For your setup, your specific heat capacity of water will cancel out from each side but you will have a mass difference that will affect the equation. That may be why you are getting a incorrect answer.