1 GFW=1 mole = 6.022 X1023 particles
Chemical recipes: How many ways can you cook a mole?
Seriously, stoichiometry is the way we calculate chemical recipes and to make sure that every molecule or ion has a partner. That way we know how much product we will get out of it. Every problem is pretty much the same. Do these steps every time.
If you decompose (using electricity) 10.0 grams of water, how many grams of oxygen will result?
2H2O --> 2H2 + O2 (Steps 1 and 2: Formulas and balanced equation)
Now set up a factor label problem
= 8.88 g O2Note: The GFW of Oxygen is 32 g not 16 grams. Why?...... Because good ole oxygen is a wimp (diatomic molecule) O2. Each molecule is two atoms joined, so 32 grams.