Question

A mass M of solid metal at temperature T is put into 3.0kg of water which is initially at 90°C. The metal and water are placed in an insulated container The specific heat for water is 4186K of 60°C. The latent heat associated with the solid-liquid transition of the metal is 7.5 x 10. The specific heat for the metal is 600 in the solid phase and 400% in the liquid phase The metal has a melting point g R. 2. Suppose that the initial temperature of the metal is T20°C and that M- 15kg. What is the final equilibrium temperature? (a) 27°C (b) 37°C (c)44°C (d) 52°C (e) 61°C 3. Suppose that the final equilibrium state occurred at a temperature of 60°C (the melting point of the metal). Assuming that the metal was initially solid at 0°C, what range of M is consistent with this final state? (a) 3.4 -5.0kg (b) 3.4 10.5kg (c) 5.0- 6.8kg (d) 5.0- 10.5kg (e) 6.8 - 10.5kg 4. Suppose that the final state is liquid metal in equilibrium with water 2.0kg, what was at 75°C. Given that the mass of the metal is M the initial temperature T? (a) -82°C (b) 27°C (c) 32°C (d) 38°C (e) 43°C

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Answer 1

OR + 2r 60o (60-T) T. 38 Q