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Chapter #14 Question #12, The value of specific heat for copper is 390 J/kg⋅C∘, for aluminun...

Chapter #14

Question #12,

The value of specific heat for copper is 390 J/kg⋅C∘, for aluminun is 900 J/kg⋅C∘, and for water is 4186 J/kg⋅C∘.
Part A
What will be the equilibrium temperature when a 265 g block of copper at 255 ∘C is placed in a 155 g aluminum calorimeter cup containing 865 g of water at 12.0 ∘C?
Express your answer using three significant figures.

T =  

Question #13

High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why, calculate the energy absorbed from a climber's body under the following conditions. The specific heat of ice is 2100 J/kg⋅C∘, the latent heat of fusion is 333 kJ/kg, the specific heat of water is 4186 J/kg⋅C∘.
Part A
Calculate the energy absorbed from a climber's body if he eats 0.85 kg of -15∘C snow which his body warms to body temperature of 37∘C.
Express your answer to two significant figures and include the appropriate units.

Q1 =  
Part B
Calculate the energy absorbed from a climber's body if he melts 0.85 kg of -15∘C snow using a stove and drink the resulting 0.85 kg of water at 2∘C, which his body has to warm to 37∘C.
Express your answer to two significant figures and include the appropriate units.

Q2 =  

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