Harder Mole Conversions

HARDER?!?!? BUT HOW?!?!

Well, it is not so much harder as it is... more things to do.

We start, with a MOLE MAP

Made it myself. This is pretty much the entire lesson. If you find yourself nodding in satisfaction while reading it, you may stop here. If, however, you find yourself with either your left or right palm on your forehead, please proceed.

From the last post, you can learn how to apply these equations to convert your values. It is the basic conversion method. * Conversion factor refers to the value you must multiply by to obtain your initial number in converted units. It always has a division line with a numerator and denominator
1) Write your initial measurement
2) write the conversion factor so that the unit which you want to eliminate is on the opposite side. Ex if you wish to eliminate the mole unit, and it is in the numerator of your initial measurement, but the mole unit on the denominator of your conversion factor.
3) On the conversion factor, write the desired unit on the unfilled side of the division line.
4) On the conversion factor, put a 1 beside the larger of the two units. Beside the other unit, write the number of those units that go into the larger unit. Ex. 6.022 * 10^23 particles are in 1 mole, so put 6.022 * 10^23 beside the particles unit.
5) Cancel out the units that can be cancelled out, this leaves you with the desired unit
6) Multiply/Divide the numbers
7) Obtain new number in desired unit

However, new in this lesson, we have number of atoms in a particle.
To do this, count of number of X atoms in the formula and plug it in to where it says "# of atoms"
Ex. Convert 4.53 * 10^14 molecules of CO2 to amount of oxygen atoms
You count 2 atoms of O in CO2. Multiply 4.53*10^14 molecules by 2 atoms of oxygen/1 molecule.
4.53*2 = 9.06 ---> 9
9 * 10^14 atoms of oxygen

IT IS IMPORTANT TO KNOW THAT THERE IS NO SHORTCUT
In other words, there is no way to immediately jump from grams to particles. You must first convert to moles then to particles.

Ex. Find the mass of 3.67 * 10 ^11 molecules of phospate (PO4)
First convert to moles:
(3.67*10^11 molecules)(1 mole/6.022*10^23 molecules) = 6.0943208 *10^-13 moles
Now convert to grams:
(6.0943208 *10^-13 moles)(95 grams/1 mole) = 579*10^-13 ---> 5.79*10^-11 grams