Question

One litre of water at 40 degree celsius mixed with one litre of water at 60 degree celsius. What will be the temperature of the mixture ?

Answer 1

Dear student
Using heat gained = heat lost
let T be temperature of mixture the change of temp will continues till mix water acquires a constant temp
msΔt₁ = msΔt₂ (here Δt₁ and Δt₂​ are change in temp occurred during mixing of water at different temp)
(m= mass of water , s = specific heat of water)
Δt₁ = Δt₂
T - 30 = 30 -T
2T =60
T =30⁰
hence temp of mixture is 30 degree

Regards