A 5.00 kg silver ingot is taken from a furnace, where its temperature is 700.0 C

Question

A 5.00 kg silver ingot is taken from a furnace, where its temperature is 700.0 C , and placed on a large block of ice at 0.0 C.

Part A

Assuming that all the heat given up by the silver is used to melt the ice, how much ice is melted?

Express your answer using three significant figures.

A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. In five minutes of operation of the engine, the heat rejected by the engine melts 0.0400 kg of ice.

Part A

During this time, how much work W is performed by the engine

A 5.00 kg silver ingot is taken from a furnace, where its temperature is 700.0 C , and placed on a large block of ice at 0.0 C.

Part A

Assuming that all the heat given up by the silver is used to melt the ice, how much ice is melted?

Express your answer using three significant figures.

Explanation / Answer

part A )

specific heat of silver , S = 0.233 J/gm

S = 233 J/Kg.degree C

let the mass of ice melted is m

m * 334 *10^3 = 5 * (700 - 0) * 233

solving for m

m = 2.44 Kg

the amount of ice melted is 2.44 Kg

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for the work done

W/Qc = (Th - Tc)/Tc

W/(0.04 * 334 *10^3) = (100 - 0)/(273)

solving for W

W = 4893.8 J

the work done is 4893.8 J

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