Which of the following mechanisms does NOT cause the entropy of a control volume to increase?Question 7Select one:a.Heat transferb.irreversibilitiesc.entropy transport with massd.Work done on the system

Consider the entropy change in the following chemical or physical processes:2 Na(s)  +  Cl2(g)  →  2 NaCl(s)N2(g)  +  3 H2(g)  →  2 NH3(g)H2O(s)  →  H2O(l)C10H22(l)  →  C10H22(s)2 Mg(s)  +  O2(g)  →    2 MgO(s)In which of these processes is entropy increased?Question 8Select one:Entropy is increased in # 3 only.Entropy is increased in #1, #4 and #5Entropy is increased in # 2 and # 3None. Entropy is decreased on all these processesEntropy is increased in all five processes

Which of the following affects the rate constant of a reaction?A.The entropy of the reactionB.The volume of the systemC.The enthalpy of the reactionD.The temperature of the systemSUBMITarrow_backPREVIOUS

Which of the following statements is consistent with the second law of thermodynamics?Question 10Select one:a.A gain of free energy in a system is never associated with conversion of energy from one form to another.b.Without an input of energy, the entropy of an organism would tend to decrease over time.c.Every energy transformation performed by an organism decreases the entropy of the universe.d.A constant input of energy is required to maintain the high level of organisation associated with living cells.

1.Question 1What causes heat transfer?1 pointA difference in mass flowA difference in temperatureWork transferA difference in specific volume

Which of the following process results in the increase in entropy of the surroundings?I) the cooling of a hot cup of coffee in room temperature airII) the evaporation of water from a desk at room temperatureIII) the melting of snow above 0 °CIV) the sublimation of dry ice (solid CO2)