Achieve Question 9

[kiara chan]

I'm kind of confused as to how I am suppose to start solving this problem, am I suppose to use PV=nRT? or q=MCAT

[Diana Avalos]

Hi,

So here we say that the heat gained by the cold water = to the heat lost by the hot water
q_{cold water} = -q_{hot water}
so
mC_spΔT= -(mC_spΔT)

mC_sp(T_final - T_initial)= -(mC_sp(T_final - T_initial))

note that the specific heat (C_sp) of water is 4.184J/g°C

Now you have to plug all you know in this equation and find T_final.
Hope this helps!