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21) Consider the following equilibrium:                                           Which of the following changes will cause the equilibrium to shift to the left?                 2SO3(g)  Arrow(1).png 2SO2(g) + O2(g)    à  [DHº = +198 kJ]

25) What is the coefficient of the permanganate ion (MnO4-1) on the reactant side when the following equation is balanced? How many electrons are being transferred when Mn in permangnate ion (MnO4-1 ) is being reduced to Mn+2?                        MnO4-1 + Br-1 → Mn+2 + Br2   (acidic solution)

38) What is the pH of a solution prepared by dissolving 0.35 mol. of solid methylamine hydrochloride (CH3NH3Cl) in 1.00 L of 1.1 M methylamine (CH3NH2)? The pKa for methylamine (CH3NH2) is 10.64.

6)Phase diagrams are used to depict changes in the properties of solutions. Below is the phase diagram of a polar solution.Question 24(2).png  What processes are occurring at point D? Condensation and vaporization Deposition and sublimation Freezing and melting

36) The density of a 2.45 M aqueous solution of methanol (CH3OH) is 0.976 g/mL. What is the molality of the solution? Molality.pngmoles.png

40) Calculate the standard entropy change for the following reaction,             CCl4(l)   +   O2(g)  →  CO2(g)  +  2 Cl2(g) Given that  So[CCl4(l)] = 216.40 J/K • mol;  So[CO2(g)] = 213.74 J/K • mol;    So[O2(g)] = 205.14 J/K • mol; and So [Cl2(g)] = 223.07 J/K • mol.

A civilization is generally defined as an advanced state of human society containing highly developed forms of living.Name three (3) characteristics needed for a settlement to be considered a CIVILIZATION

Amongst Vertebrate, most the species  return to the water to reproduce

What should you if you can not longer keep  a pet  GREEN IGUANA ?

Cultivated Plants are considered a renewable natural resource