A copper block is removed from a 310 C oven and dropped into 1.10 kg of water at

Question

A copper block is removed from a 310 C oven and dropped into 1.10 kg of water at 27.0 C. The water quickly reaches 36.0 C and then remains at that temperature.

A copper block is removed from a 310 oCoven and dropped into 1.10 kg of water at 27.0 OC. The water quickly reaches 36.0 oCand 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 to three significant figures and include the appropriate units

Explanation / Answer

Heat (energy ) lost by Copper,

Q = m C deltaT

Q = (m ) (385) ( 310 - 36)

Q = 105490 m

Heat absorbed by water,

Q = 1.10 x 4190 x (36 - 27)

Q = 41481 J

Applying energy conservation (Assuming no heat loss)

105490 m = 41481

m = 0.393 kg

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