Question #a2afa

1 Answer
Apr 8, 2014

AMU, or Atomic Mass Unit, is a way of bridging the gap between grams and something so small we cant even see.

Lets take Carbon, #C#, for example. If you look on the periodic table, Carbon has the atomic mass of 12.

That means that one carbon atom weighs 12 AMU.

To make it simple, 1 Mole of Carbon is just 12 grams of it. A mole is the amount of atoms in exactly 12 grams of Carbon.

Remember, Carbon's atomic mass, or AMU, is 12.

If you want to get technical, 1 Mole equals #6.022x10^23# atoms of that particular substance.

That means that in 1 Mole of Carbon, or 12 grams of carbon, there are 602,200,000,000,000,000,000,000 atoms of Carbon (#6.022x10^23#)

So if you have 1 Mole of Nitrogen, that means that you have 14 grams of Nitrogen.

If you have 4 Moles of Sulfur, you have 128 grams of Sulfur.

Now, lets do it the other way.

If you have 500 grams of Phosphorous, you have...
#500/31=16.13# Moles of Phosphorous

If you have 8,473 grams of Lead, you have.....
#8473/207=40.93# Moles of Lead