Question

A 270.0 gram piece of copper is dropped into 300.0 grams of water 24.00 °C. If the final temperature of water is 42.00 °C, what was the initial temperature of the copper piece?

Specific heat of copper = 0.39 J/g °C

257 °C
272 °C
302 °C
313 °C

Answer 1

Answer:

257 °C

Explanation:

Answer 2

The correct answer is option A) 257°C

How to find the initial temperature?

To find the initial temperature, first, we have to find the heat

Heat formula = Q = m*c*t

Q = 270*0.39*18

Q= 1895.4

Now to find the initial temperature

Q = mc(T - t0)

1895.4 = 270 * 0.39 * (40- t0)

t0 = 257

Initial temperature means the average temperature of the contents of the coldest container to be processed at the time the thermal processing cycle be- gins, as determined after thorough stirring or shaking of the filled and sealed container.

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