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Chapter 8 Mol
Chem Test Chapter 8
10
Chemistry
Undergraduate 2
03/13/2013

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Term
Avogadro's number
Definition
the value that corresponds to the number of atoms in 12.01 g of carbon, that is, 6.02x1023
Term
Mole (mol)
Definition
The amount of substance that contains 6.02x1023
Term
Molar mass
Definition
The mass of 1 pur substance expressed in grams
Term
Molar Volume
Definition
the volume occupied by 1 mol of any gas at standard conditions
Term
standard temperture and pressure (STP)
Definition
a temperature of 00C and 1 atm pressure that have been chosen as standard conditions
Term
Avogadro's Theory
Definition
equal volumes of gases, under the same conditions of temperature and pressure, contain equal numbers of molecules
Term
Gas density
Definition
the ratio of mass per unit volume for a gas, expressed in grams per liter
Term
Percent Composition
Definition
A list of the mass percent of each element in a compound
Term
Molecular formula
Definition
A chemical formula that expresses the actual number of atoms of each element in a molecule
Term
Emirical Formula
Definition
a chemical formula the expresses the siplest whole-number ratio of atoms of each element in a molecule, or ions in an ionic compound
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