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The figure shows a PV diagram similar to the cycle of a Diesel engine. It consists of two adiabatic steps (a→b) and (c→d), a constant pressure step (b→c) and a constant volume step (d-a). We are interested in the efficiency, assuming the engine uses a diatomic (f = 5) ideal gas. a) For each of the four steps, state what type of process it is and the sign (+,-,or 0) of the work W, the heat Q, and the internal energy change AU. Type Step a-b sign of W sign of AU sign of Q b→c c→d d➜a b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat Qout. c) What is the isobaric heat capacity of n mole of a diatomic ideal gas? d) Use your table to identify the steps where heat enters the engine and where heat is exhausted and calculate the efficiency. Your result for the efficiency should only contain temperature differences and numbers. b adiabat C adiabat d a V

The figure shows a PV diagram similar to the cycle of a Diesel engine. It consists of two adiabatic steps (a→b) and (c→d), a constant pressure step (b→c) and a constant volume step (d-a). We are interested in the efficiency, assuming the engine uses a diatomic (f = 5) ideal gas. a) For each of the four steps, state what type of process it is and the sign (+,-,or 0) of the work W, the heat Q, and the internal energy change AU. Type Step a-b sign of W sign of AU sign of Q b→c c→d d➜a b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat Qout. c) What is the isobaric heat capacity of n mole of a diatomic ideal gas? d) Use your table to identify the steps where heat enters the engine and where heat is exhausted and calculate the efficiency. Your result for the efficiency should only contain temperature differences and numbers. b adiabat C adiabat d a V

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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РА The figure shows a PV diagram similar to the cycle of a Diesel engine. It consists of two adiabatic steps (a→b) and (c→d), a constant pressure step (b→c) and a constant volume step (d→a). We are interested in the efficiency, assuming the engine uses a diatomic (f = 5) ideal gas. a) For each of the four steps, state what type of process it is and the sign (+,-,or 0) of the work W, the heat Q, and the internal energy change AU. Туре sign of W Step a→b sign of AU sign of Q b→c c→d d→a b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat |Qout. c) What is the isobaric heat capacity of n mole of a diatomic ideal gas? d) Use your table to identify the steps where heat enters the engine and where heat is exhausted and calculate the efficiency. Your result for the efficiency should only contain temperature differences and numbers. adiabat adiabat d a
Transcribed Image Text:РА The figure shows a PV diagram similar to the cycle of a Diesel engine. It consists of two adiabatic steps (a→b) and (c→d), a constant pressure step (b→c) and a constant volume step (d→a). We are interested in the efficiency, assuming the engine uses a diatomic (f = 5) ideal gas. a) For each of the four steps, state what type of process it is and the sign (+,-,or 0) of the work W, the heat Q, and the internal energy change AU. Туре sign of W Step a→b sign of AU sign of Q b→c c→d d→a b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat |Qout. c) What is the isobaric heat capacity of n mole of a diatomic ideal gas? d) Use your table to identify the steps where heat enters the engine and where heat is exhausted and calculate the efficiency. Your result for the efficiency should only contain temperature differences and numbers. adiabat adiabat d a
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