What is the change in entropy of mercury vapor (Lv = 2.7 x 105 J/kg) when 0.50 kg of it condenses to a liquid at its boiling point of 357 oC?
Answer to relevant QuestionsA rigid container contains 1.0 mol of an ideal gas that slowly receives 2.0 x 104J of heat. (a) The work done by the gas is (1) positive, (2) zero, (3) negative. Why? (b) What is the change in the internal energy of the ...One mole of an ideal gas undergoes an isothermal compression at 0 oC, and 7.5 x 103 J of work is done in compressing the gas. (a) Will the entropy of the gas (1) increase, (2) remain the same, or (3) decrease? Why? (b) ...Suppose that the system described by the T–S diagram in Fig. 12.25 is returned to its original state, state 1, by a reversible process depicted by a straight line from state 3 to state 1. (a) The change in entropy of the ...A steam engine is to have its thermal efficiency improved from 8.00% to 10.0% while continuing to pro-duce 4500 J of useful work each cycle. (a) Does the ratio of the heat output to heat input (1) increase, (2) remain the ...A gasoline engine has a thermal efficiency of 25.0%. If heat is expelled from the engine at a rate of 1.50 x 106 J/h, how long does the engine take to perform a task that requires an amount of work of 1.5 x 106 J?
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