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Unit:6

QuestionAnswer
Avogadro's number is the number of particles in exactly one mole of pure substance
molar mass the mass of one of a pure substance is called molar mass of that substance
mole is the amount of a substance that contains as many particles as there are atoms in exactly 12g of carbon-12
molecule is a neutral group of atoms that are held together by covalent bonds
scientific notation is used to express very large or very small numbers
formula unit is the simplest collection of atoms from which an ionic compounds formula can be written
molecular mass is an essential part of identifying an unknown compound and determining the structure of a molecule of the compound.
atomic mass is a relative measure
molecular formula give the type and number of atoms in a compound
density is the ratio of mass to volume,or mass divided by volume
formula mass is the sum of the average atomic masses of a compounds element
percent composition is the number of grams in one mole of a compound
empirical formula consist of the symbol for the elements combined in a compound,with subscripts showing the smallest whole-number mole ratio of the different atoms in the compound
Created by: er355333
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