For a calculator, use your computer. For a periodic table, click here.
Just knowing that a mole = 6.02 x 1023 is not really that useful. A mole's "magic" comes from its ability to convert the atomic information on the periodic table into the big world - the lab.
Looking on your periodic. How much mass does one Lithium atom have?
The "a.m.u." after the atomic mass stands for "atomic mass units" OR the unit for the mass of an atom. (It's not used by all Chemistry teachers, but it the most accurate because it tells us that you are talking about things on the atomic level.)
Find the mass of one Magnesium atom.
The atomic mass tells you how much mass an atom or a molecule has. But since atoms and molecules are so small that's not very useful in the lab. Moles allow you to easily convert from the atomic level to the real world. One mole of a substance equals the atomic mass, but in grams.
Try it: How much mass does one mole of Lithium have?
If you have a mole of an atoms, take the atomic mass and change "amu" to "grams". It's that simple.
How much mass does one mole of Oxygen have?
How much mass does one molecule of water (H2O) have?
How much mass does one mole of water (H2O) have?
It's that easy. Find the atomic or molecular mass from the periodic table. Put "amu" if you are talking about 1 atom or 1 molecule and put grams if you are talking about moles.
How much mass do two Beryllium atoms have?
How much mass do two moles of Beryllium have?
What units do we use to measure atoms and molecules?
What units do you use to measure moles?
The term "molar" just means we are talking about moles (use grams), while "molecular" means we are talking about molecules (use amu).
Find the molar mass of one mole of Nitrogen.
Find the atomic mass of Nitrogen.
Find the molar mass of CO2 (carbon dioxide).
Find the molecular mass of CO2 (carbon dioxide).