I NEED CORRECT CLEAR SOLUTIONsS PLEASE What mass of water at 23.0 degree C must

Question

I NEED CORRECT CLEAR SOLUTIONsS PLEASE

What mass of water at 23.0 degree C must be allowed to come to thermal equilibrium with a 1.66-kg cube of aluminum initially at 1.50 times 10^2 degree C to lower the temperature of the aluminum 63.9 degree C? Assume any water turned to stream subsequently recondenses. Kg An aluminum cup of mass 300 g contains 800 g of water in thermal equilibrium at 80.0 degree C. The combination of cup and water is cooled uniformly so that the temperature decreases by 1.50 degree C per minute. At what rate is energy being removed by heat? Express your answer in watts. W A 50.0 g copper calorimeter contains 260 g of water at 20.0 degree C. How much steam at 100 degree C must be condensed into the water if the final temperature of the system is to reach 50.0 degree C? g

Explanation / Answer

here,

initial temprature of water , Tw = 23 degree C

initial temprature of alumunium , Ta = 150 degree C

mass of alumunium , m1 = 1.66 kg

Tf = 63.9 degree C

heat lost by alumunium = heat gained by water

m1 * Ca * ( Ta - Tf) = m2 * Cw * ( Tf - Tw)

1.66 * 900 * ( 150 - 63.9) = m2 * 4186 * ( 63.9 - 23)

m2 = 0.75 kg

mass of water is 0.75 kg

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