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(14%) Problem 4: Suppose you want to raise the temperature of a 0.225-kg piece of ice from -20.0°C to 130°C. The heat of fusion is L=334 kJ/kg, and the heat of vaporization is L=2256 kJ/kg. In this problem, take 1520 J/kg °C as the specific heat of steam, and 2090 J/kg °C as the specific heat of ice. 50% Part (a) How much heat, in kilocalories, must be transferred for this to happen, including the energy needed for phase changes? Q= kcal sin() cotan() atan() cosh() cos() asin() acotan() sinh() tanh() cotanh() Degrees O Radians Submit tan() ( acos() B 1 7 8 9 4 5 6 1 2 3 + 0 VO BACKPACE Hint Felhack Feedback: t giver . CLEM Hints: 0% deduction per hint. Hints remaining: 2 50% Part (b) How much time, in seconds, is required to do this, assuming a constant 20.0 kJ/s rate of heat transfer? Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 100 (0% per attempt) detailed view

(14%) Problem 4: Suppose you want to raise the temperature of a 0.225-kg piece of ice from -20.0°C to 130°C. The heat of fusion is L=334 kJ/kg, and the heat of vaporization is L=2256 kJ/kg. In this problem, take 1520 J/kg °C as the specific heat of steam, and 2090 J/kg °C as the specific heat of ice. 50% Part (a) How much heat, in kilocalories, must be transferred for this to happen, including the energy needed for phase changes? Q= kcal sin() cotan() atan() cosh() cos() asin() acotan() sinh() tanh() cotanh() Degrees O Radians Submit tan() ( acos() B 1 7 8 9 4 5 6 1 2 3 + 0 VO BACKPACE Hint Felhack Feedback: t giver . CLEM Hints: 0% deduction per hint. Hints remaining: 2 50% Part (b) How much time, in seconds, is required to do this, assuming a constant 20.0 kJ/s rate of heat transfer? Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 100 (0% per attempt) detailed view

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(14%) Problem 4: Suppose you want to raise the temperature of a 0.225-kg piece of ice from -20.0°C to 130°C. The heat of fusion is L=334 kJ/kg, and the heat of vaporization is L=2256 kJ/kg. In this problem, take 1520 J/kg °C as the specific heat of steam, and 2090 J/kg-°C as the specific heat of ice. 50% Part (a) How much heat, in kilocalories, must be transferred for this to happen, including the energy needed for phase changes? Q= kcal sin() cotan() atan() cosh() cos() tan() ( asin() acos()) E1 acotan() sinh() tanh() cotanh() Degrees O Radians Submit Hint + 0 VO BACKPACE Felhack 7 8 9 4 5 6 1 2 3 Feedback: t giver . CLEM Hints: 0% deduction per hint. Hints remaining: 2 50% Part (b) How much time, in seconds, is required to do this, assuming a constant 20.0 kJ/s rate of heat transfer? Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 100 (0% per attempt) detailed view
Transcribed Image Text:(14%) Problem 4: Suppose you want to raise the temperature of a 0.225-kg piece of ice from -20.0°C to 130°C. The heat of fusion is L=334 kJ/kg, and the heat of vaporization is L=2256 kJ/kg. In this problem, take 1520 J/kg °C as the specific heat of steam, and 2090 J/kg-°C as the specific heat of ice. 50% Part (a) How much heat, in kilocalories, must be transferred for this to happen, including the energy needed for phase changes? Q= kcal sin() cotan() atan() cosh() cos() tan() ( asin() acos()) E1 acotan() sinh() tanh() cotanh() Degrees O Radians Submit Hint + 0 VO BACKPACE Felhack 7 8 9 4 5 6 1 2 3 Feedback: t giver . CLEM Hints: 0% deduction per hint. Hints remaining: 2 50% Part (b) How much time, in seconds, is required to do this, assuming a constant 20.0 kJ/s rate of heat transfer? Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 100 (0% per attempt) detailed view
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