the second equality originates from Dalton's rule (Eq( 7.3)) and the total pressure of 1 atm. Because the initial H2/O2 ratio is 2, the stoichiometry of the reaction O2 + 2H2 = 2H2O gives the additional condition xH2 /xO2 = 2. Finally, the sum of the mole fractions is unity, x^ + Xo + x^o = 1. With a little algebra, these three equations are combined to give the solution:
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Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.