Methanol (CH3OH) is used in the production of many chemicals. methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure.

CO(g) + 2H2(g) ==> CH3OH(g)

a) How many moles of each reactant are needed to produce 3.60 x 10^2 g CH3OH?
b)Calculate the number of grams of each reactant needed to produce 4.00 mol CH3OH.
c)How many grams of hydrogen are necessary to react with 2.85 mol CO?

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  1. a) 3.6 x 10^2 g CH3OH = ?? moles.
    3.5 x 10^2/molar mass CH3OH = moles.
    You will need that many moles CO and twice that for moles H2.
    b) To produce 4.00 mole CH3OH, you will need 4 moles CO and 8 moles H2. Convert those moles to grams. g = moles x molar mass.
    c) Use the coefficients in the balanced equation to convert 2.85 mol CO to moles H2, then convert moles H2 to grams.

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