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Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
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Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid
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Solid tin exists in two forms: white and gray. for the transformation sn(s, white) → sn(s, gray) the enthalpy change is -2.1 kj/mol and the entropy change is -7.4 j/(mol*k). a. calculate the gibbs free energy change for the conversion of 1.00 mol white tin to gray tin at -30℃. b. will white tin convert spontaneously to gray tin at -30℃? c. at what temperature are white and gray tin thermodynamically equivalent at a pressure of 1 atm?
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What is the mass, in grams, of a pure gold cube that has a volume of 4.20cm^3 ? pure gold cube is 1...
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