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Which of the following processes involve an increase in ∆Sorxn?1.Br2(l)–> Br2(g)2.2NO(g) +O2(g) –> 2NO2(g)3.MgSO4(s) –> MgO(s) + SO3(g)4.2HgO(s) –> 2Hg(l) + O2(ga)1 and 2b)2 and 3c)3 and 4d)1,3, and 4e)1,2,3 and 4

 The second law of thermodynamics states:(A)All exothermic processes also increase entropy.(B)The enthalpy of the universe always increases in spontaneous processes.(C)A spontaneous process always increases entropy.(D)∆H 0 for all spontaneous processes(E)The entropy of the universe always increases in spontaneous processes

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What is the percent by mass of a solution with 10 g of solute and 90 g of solvent?  A. 9%  B. 10%  C. 50%  D. 90%

Which of the following includes the correct stress markers for the following word: ballerina

Absolute zero equals:·       A. 273 K·       B. 100 K·       C. 0 K·       D. −100°C

Which expression defines Gibbs free energy?·       A. G=H+TS·       B. G=H−TS·       C. G=U+PV·       D. G=Q−W

Calculate the thermodynamic equilibrium constant at 25°C for a reaction for which∆G0 = –25.60 kJ per mol of reaction. R = 0.008314 kJ/mol•K           (a) 5.14 x 10^1                         (b) 11.2                                  (c) 6.12 x 10^2           (d) 3.07 x 10^4                         (e) 4.32 x 10^6

Which process increases entropy?·       A. Freezing·       B. Condensation·       C. Vaporization        D. Crystallization

ΔG = 0 means:·       A. Spontaneous·       B. Nonspontaneous·       C. Equilibrium·       D. Impossible