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16 Cards in this Set
- Front
- Back
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Reactants |
The equation before the reaction |
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Products |
The equation after the reaction |
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Coefficients |
The numbers used to balance a chemical equation, also represent moles |
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Law of Combined Volumes |
When all measurements are made at the same temperature and pressure, the volumes of gaseous reactants and products are in a small whole-number ratio |
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Avogadro's hypothesis |
When at the same temperature and pressure, volumes of gases have the same number of molecules |
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Avogadro's number |
6.02x10^23 |
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Formula mass |
The average mass of a formula unit |
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Molar volume of a gas |
One mole of any gas occupies a volume of 22.4 L at standard temperature and pressure |
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STP |
1 atmosphere of pressure and a temperature of 0°C |
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Stoichiometry |
The quantitative relationship between reactants and products in a balanced chemical equation |
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Solution concentation |
The amount of solute in a given amount of solvent |
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Dilute solution |
Relative small amounts of solute in a given amount of solvent |
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Concentrated solution |
Relatively large amounts of solute in a given amount of solvent |
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Molarity(M) |
The moles of solute per liter of solution, M=mol/liter |
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Percent by volume |
Volume of solute/volume of solution x 100 or part/whole x 100 |
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Percent by mass |
Mass of solute/mass of solution x100 |
