Iron can be obtained by reacting the ore hematite (Fe2O3) with coke (C).
The latter is converted to CO2. As manager of a blast furnace you are told that you have
20.5 Mg (megagrams) of Fe2O3 and 2.84 Mg of coke on hand. (a) Which should you order
first—another shipment of iron ore or one of coke? (b) How many megagrams of iron can
you make with the materials you have?
Calculate the volume, in liters, of 1.546 M KOHmthat must be added to a 0.119 L solution containing 9.08 g of glutamic acid hydrochloride (H3Glu+Cl−, MW=183.59 g/mol) to achieve a pH of 10.33. Glutamic acid (Glu) is an amino acid with pKa values of pKa1 = 2.23, pKa2 = 4.42, and pKa3 = 9.95.
The product of first three terms of a GP is 1000. If 6 is added to its second term
and 7 is added to its third term, then the terms becomes in AP. Find the GP.
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