# Avogadro's Number In Scientific Notation

### What Is A Mole?

#### This video covers what moles are, and how to create conversion factors for them. It also explains why your teacher is doing this 'moles thing' to you, which is a question I've heard from many a frustrated chem student. Trust me, there is a reason!

• Use the EE or EXP key Scientific calculators have a special key for scientific notation numbers. It is either the EE or the EXP key and it represents the 'times ten' to some power (×10 x) part of scientific notation. So lets say we want to enter Avogadro's number which is 6.02 × 10 23. Here is how you do that.
• Avogadro’s number, number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.02214076 × 10 23. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction (if any).See alsoAvogadro’s law.

The Avogadro's number is equal to (6,022 x 10 raised to 23 particles) and is symbolized in the formulas with the letters L or NA. In addition, it is used to make conversions between grams and atomic mass unit. The unit of measure of the Avogadro's number is the mole (mol-1) but it can also be defined in lb/mol-1 and oz/mol-1.