The water gas shift reaction shown below can be used to produce hydrogen from water and coal. Given the data in the following table, which experiment will proceed in the foward direction to produce more hydrogen? Under the experimental conditions, Kc= 25 for this reaction.                                                       H2O(g) + CO(g) = H2(g) + CO2(g) Experiment              [H2O]              [CO]              [H2]             [CO2] A 0.030 0.030 0 0 B 0 0 0.030 0.030 C 0.020 0.020 0.050 0.040

The extraction of aluminum metal from the aluminum hydroxide found in bauxite by the Hall-Héroult process is one of the most remarkable success stories of 19th century chemistry, turning aluminum from a rare and precious metal into the cheap commodity it is today. In the first step, aluminum hydroxide reacts to form alumina Al2O3  and water:   2Al(OH)3(s) + Al2O3(s) ->  3H2O(g) In the second step, alumina Al2O3  and carbon react to form aluminum and carbon dioxide:   2Al2O3(s) +  3C(s) + 4Al(s) ->  3CO2(g) Suppose the yield of the first step is 74.%  and the yield of the second step is  76.% . Calculate the mass of aluminum hydroxide required to make  4.0kg  of aluminum.   Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.

lodine pentoxide, I₂O5, is a white crystalline solid. It is formed by heating HIO, to about 200 °C in a stream of dry air. The reaction is shown below. 2HIO3(s) 1₂0,(s) + H₂O(g)

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