The Avogadro's number determines how many items make up a particular unit, such that 1 mole of a substance contains 6.022 × 10^23 items.
These items may be particles such as molecules, atoms, ions , etc
Therefore, 1 mole of anything has 6.022×10^23 items.
This number is called the Avogadro's constant and applies to all substances, and is normally used by researchers and scientists to determine the number of moles of elements and compounds.
2 elements from the periodic table
The proper definition would be B. A mixture that can be separated.
Average human body temperature 37.0 309.95
Boiling temperature for water (at standard pressure) 99.9839 373.1339
