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Vocab: U7

Vocabulary for Chemistry

TermDefinition
Avogradro's Number The number of molecules in a mole of a substance, approximately 6.0225 x 1023.
mole The amount of a substance that contains as many atoms, molecules, ions, or other elementary units as the number of atoms in 0.012 kilograms of carbon 12. The number is 6.0225 × 1023, or Avogadro's number
molar mass M, is a physical property characteristic of its mass per amount of substance. The base unit for mass is the kilogram the unit for molar mass is kg/mol. molar masses are almost always quoted in grams per mole (g/mol).
empirical formula A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements.
molecular formula A chemical formula that shows the number and kinds of atoms in a molecule.
hydrate A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal.
percentage composition The mass percent of each element in a compound.
Created by: ii_UnkownWaterz
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