Homework Help: chemistry

Posted by g3mini on Sunday, February 24, 2008 at 7:37pm.

the fuel methanol(CH3OH) is made by the reaction of carbon monoxide and hydrogen.
a) write the balanced chemical reaction

b)how many grams og hydrogen are needed to produce 45.0 grams of methanol?

chemistry - Amanda, Sunday, February 24, 2008 at 7:50pm
CO + 2H2 = CH3OH
2mol 1mol
?gr 45gr

45 x 2 = 90 grams

hope i got it right for you
chemistry - DrBob222, Sunday, February 24, 2008 at 9:09pm
Equation by Amanda is ok.
part b is not.

Convert 45.0 g CH3OH to mols. # mols = grams/molar mass.
Convert mols CH3OH to mols H2 using the coefficients in the balanced equation.
Convert mols H2 to grams H2 remembering that grams = mols H2 x molar mass H2.
Post your work if you get stukc.

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