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Al3+ is reduced to Al(s) at an electrode surface. If a current of 25 amperes is maintained for 8.0 hours, what mass of aluminum is deposited on the electrode? Assume 100% current efficiency.

At 25 °C, what is the osmotic pressure of 8.65 g urea (CON2H4) diluted with water to 1.50 L? (R = 0.08206 L·atm/mol·K)

The equilibrium constant for a reaction at 25 °C is 4.7 ´ 10-8. What is DG°? (R = 8.314 J/K·mol)

Calculate for the reaction below at 25.0 °C2 H2O(g) + S(s) ® 2 H2S(g) + O2(g)given = +442.4 kJ and = +206.9 J/K.

The thermochemical equation for the formation of ammonia from elemental nitrogen and hydrogen is as follows.N2(g) + 3 H2(g) D 2 NH3(g)  DH = -92.2 kJWhich of the following will drive the equilibrium system to the right?

A gaseous mixture of NO2 and N2O4 is in equilibrium. If the concentration of N2O4 is 7.1 ´ 10-4 M, what is the concentration of NO2?2 NO2(g) D N2O4(g)  Kc = 170

In the following reactionHF(aq) + HPO42-(aq) D F-(aq) + H2PO4-(aq)

Write the overall chemical reaction and calculate E( for the following reduction and oxidation half-reactions.Sn4+(aq) + 2e- ® Sn2+(aq)= +0.154 VAl(s) ® Al3+(aq) + 3e-= +1.68 V

Which of the following ligands is a polydentate ligand?

Write the expression for Kc for the reaction below.Cu2+(aq) + 4 NH3(aq) D Cu(NH3)42+(aq)