Homework Help: Chem Electron Config

Posted by Shay on Thursday, October 18, 2012 at 3:59pm.

A 10.0-g sample of C2H5OH is burned completely in air. How many molecules of H2O are formed?
3.92×1023

*How many grams are formed?*

did anyone figure out how to get the grams of H2O formed?

Chem Electron Config - Steve, Thursday, October 18, 2012 at 4:16pm
start by defining the reaction:

C2H5OH + 3O2 = 2CO2 + 3H2O

Now you know that each mole of C2H5OH produces 3 moles of H2O.

convert grams C2H5OH to moles, multiply by 3, and convert moles H2O to grams.

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