Question

A copper block is removed from a 320 ∘C oven and dropped into 1.20 kg of water at 22.0 ∘C. The water quickly reaches 27.5 ∘C∘and then remains at that temperature.

What is the mass of the copper block? The specific heats of copper and water are 385 J/(kg⋅K) and 4190 J/(kg⋅K) respectively. Express your answer with the appropriate units.

Answer 1

SOLUTION;

Specific heat of copper= 385 J/(kg.K)

specific heat of water = 4190 J/(kg.k)

mass of water

Let's the mass of copper  

We know that the heat loss of copper is equal to heat gain of water

So

According to question

The mass of copper is = 0.246 kg

Answer = 0.246 kg