CHEM 1040 Chapter Notes - Chapter 3: Molar Mass, Amedeo Avogadro, Molecular Mass
21 Dec 2016
School
Department
Course
Professor
Document Summary
Chapter 3: calculations with chemical formula and equations. Mole (n) is a si base unit of the amount of a substance containing 6. 02 x 1023 entities. The unit symbol for the mole is (mol). The counting unit for entities such as atoms, ions, subatomic particles (electrons) and molecules is the mole. The value 6. 02 x 1023 is sometimes called the avogadro"s constant (na) in honour of the italian physicist. Avogadro"s constant (na) is the number of entities in 1 mol of a substance that equals to 6. 02 x 1023 it is defined as the number of atoms in exactly 10g of the carbon-12 isotope. Amount (n) is the quantity of a substance that is measured in moles (mol). Mass (m) is the amount of matter in a substance. The unit symbol of mass is grams (g). Atomic mass is the mass of one atom of an element. It is measured in atomic mass units with the unit symbol (u).
