The document provides steps to determine the moles of water produced from a chemical reaction of ethane and oxygen gas. It states the balanced chemical equation and mole ratios can be used to determine the number of moles of an unknown reactant or product given the moles of a known substance. It then lists the steps as: 1) ensure the equation is balanced, 2) determine the mole ratio of unknown to known, and 3) calculate the moles of the unknown using the mole ratio and moles of the known.

1. April 08, 2010
April 8, 2010 Entry Slip
For the following reaction, give all possible mole
ratios.
C2H6 + O2 CO2 + H2O

2. April 08, 2010
Determine the number of moles of water produced by the reaction
of 0.65 moles of oxygen gas with excess ethane, C2H6.
C2H6 + O2 CO2 + H2O
Step 1: Make sure the equation is balanced.
Step 2: Determine the mole ratio to use.
Mole ratio = Unknown
Known
Step 3: Determine the number of moles of "unknown" required/produced.

3. April 08, 2010

4. April 08, 2010