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18 Cards in this Set
- Front
- Back
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Avogadro's number
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the number of units in a mole; 6.022 x 10^23
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Balanced
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said of an equation in which the numbers and kinds of atoms on both sides of the arrow are the same
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Coefficient
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a number placed before a formula in an equation to indicate how many formula units are required to balance the equation
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Empirical formula
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a formula that gives the ratios of atoms in a compound
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Formula mass
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the sum of atomic masses of all atoms in one formula unit of a substance
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Formula unit
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one unit (atom, ion, or molecule) corresponding to a given formula
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Limiting reactant
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the reactant present in limiting amount that controls the extent to which reaction occurs
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Molar mass
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the mass of 1 mol of substance; equal to the molecular or formula mass of the substance in grams
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Molarity (M)
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a common unit of conentration; the number of moles of solute per liter of solution
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Mole (mol)
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the SI unit for amount of substance; the quantity of a substance that contains as many molecules or formula units as there are atoms in exactly 12g of carbon-12
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Molecular formula
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a formula that tells the identity and numbers of atoms in a molecule
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Molecular mass
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the sum of atomic masses of the atoms in a molecule
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Percent composition
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a list of elements present in a compound and the mass percent of each
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Percent yield
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the amount of product actually formed in a reaction divided by the amount theoretically possible and multiplied by 100%
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Solute
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the dissolved sunstance in a solution
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Stoichiometry
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mole/mass relationships between reactants and products
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Titration
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a procedure for determining the concentration of a solution
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Yield
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the amount of product formed in a reaction
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