Moles produced in an equation, homework help

1.) a.) Given the following reaction, how many moles of Z will be produced from 2.85 moles of A, assuming excess B

           2A + 3B –> 4Y + 5Z

b.) A Solution is made by mixing the equal masses of methanol, CH4O, and ethanol, C2H60. Determine the mole fraction of each component to at least three significant figures. 

      Xmeth=________

      Xeth= _________

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