October 9, 2015

Homework Help: Chemistry

Posted by Timofey on Saturday, May 25, 2013 at 2:08pm.

If 10g of NO react with 20g of O2, what is the maximum amount of NO2 that can be produced?

My answer is

Mol NO = 10/30 = 0.333 mols
Mol O2 = 20/32 = 0.625 mols

To react all the O2 you would need 2 NO*0.625 moles of NO/1mole O2 =1.25 O2? but, we just have 0.333 mols, so NO is your limiting reactant and O2 is in excess.

Are the units correct on the calculation; where I put 2 NO, should it be 2 moles NO * 0.625 moles NO/1mole O2?? Confused here.

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