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Chapter 11
The Mole
7
Chemistry
10th Grade
02/04/2008

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Term
mole
Definition
measures the amount of a substance
Term
Avogadro's number
Definition
6.022 x 1023 representative particles
Term
molar mass
Definition
the mass in grams of one mole of any pure substance
Term
percent composition
Definition
the percent by mass of each element in a compound
Term
empirical formula
Definition
the formula with the smallest whole number mole ratio of the elements
Term
molecular formula
Definition
the actual number of atoms of each element in one molecule or formula unit of a substance
Term
hydrate
Definition
a compound that has a specific number of water molecules bound to its atoms
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