Qrtr 4 final

Use the space provided to write out the steps you take to solve different types of problems.
Use any additional space for notes. These 2 pages should be full when you turn in your notebook.
Steps to solve problems
Mole to Mole:
In these mole to mole ratios, you will start off with what the problem gives you
(what is given). In this example, the problem gives you 6 moles of H2 and asks
you to convert it into moles of O2. So like I said, you put 6 mol H2 in the top left
space. After that you have to convert it into moles of H2 again, but this time it's
the specified amount in the equation. So 6 mol H2--> 2 mol H2. But you're not
done! On top of the 2 mol H2, you need to match it with the specified moles of
the product in the problem, in this example it is 1 mole of O2. So you multiply
the top and bottom and then divide the top by the bottom and you get your
answer! Here it is 3 mol O2.
Mole to Mass: 2C + 2H2O --> CH4 + CO2
If you have 1 mol of CH4, how many grams of C would you have?
1 mol CH4 2 mol C 2 mol = 2 g C
1 mol CH4 1 mol
For Mole to mass ratios, it is simple. You begin with the given amount in the
problem, in this case it is 1mol of CH4. At this point you convert the mols of
CH4 to mols of C using the reaction. In this case, 2 mols of C=1 mol CH4. Then
you just multiply and divide the top and bottom and here you come up
with 2 g of Carbon.
Mass to Mass: 20 g of propane combust, how many g of water are
produced?
C 3 H 8 + 5O 2 --> 4H 2 O + 3CO 2
20 G C3H8 1 mol Ch3H8 4 mol H2O 18 g H2O 1440 = 33 g H2O
44 g C3H8 1 mol C3H8 1 mol H2O 44
For this equation I explain it below: (in green)