Required mass of ferric oxide
Consider the reaction in which ferric oxide is converted to iron and gaseous oxygen. If this reaction is only 90.0% efficient and the ferric oxide is only 82.0% pure, in order to make 4.00 moles Fe, what is the required mass of ferric oxide?
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The half-life for the radioactive decay of C-14 is 5730 years. How long will it take for 20% of the C-14 atoms in a sample of C-14 to decay?
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Write the equilibrium constant-expression for this reaction in terms of partial pressures. (b) Why doesn't the concentration of Na2O appear in the equilibrium-constant expression?
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