A metal piece of 50 g specific heat 0.6 cal/gºC initially at 120ºC i – InterviewSolution

1.

A metal piece of 50 g specific heat 0.6 cal/gºC initially at 120ºC is dropped in 1.6 kg of water at 25ºC. Find the final temperature or mixture.

Answer»

m₁c₁(θ₁ – θ) = m₂c₂ (θ – θ₂)

∴ c₂= 1 cal/gmºC

∴ 50 × 0.6 × (120 – θ)

= 1.6 × 10³ × 1 × (θ – 25)

θ = 26.8ºC

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