14. Solving a chemistry problem
3. How does the rate of a chemical reaction depend on the concentrations of reactants? Write mathematical expressions for the rates of reactions proceeding according to the equations:
a) 4NH3 5O2 = 4NO 6 H-2O;
b) 2H2S SO2 = 3S 2H2O;
c) Fe3O4 4H2 = 3Fe 4H2O.
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