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Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| molarity equation | (moles of solute)/liter of soln
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| how to find moles from molarity | moles = molarity (M) * volume
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| equation for changing molar concentration of a soln | M1V1 = M2V2
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| (moles of solute) / (mass of solvent, kg) | molal (m)
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| percent by mass equation | (mass of solute) / (total mass of soln) * 100
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| parts per million equation | (mass of solute) / (total mass of soln) * 1,000,000
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| _______ solutes dissolve polar solvents | polar
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| _______ solutes dissolve nonpolar solvents | nonpolar
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| what do precipitation rxns create? | salts
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| _______ ions are ions that do not take part in the rxn | spectator
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| what are 5 insoluble compounds? | 1. carbonates 2. phosphates 3. chromates 4. sulfides
5. hydroxides (except barium)
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| what are some soluble compunds? | compounds containing 1. the alkali metal ions 2. ammonium ions 3. halides (except silver, mercury 2 and Lead 2) 4. sulfates (except silver, calcium, stronium, barium and lead)
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| _______ acids dissociate completely in H2O, while _______ acids dissociate only partially | strong; weak
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| ________ acids increase H+ conc in a soln, while _______ do not have H+ but will generate it in a soln | Arrhenius; Lewis
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| what indicator is used to determine acidity | methyl red; yellow --------> red (strongly acidic)
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| what indicator is used to determine changes in base conc? | phenol red; yellow --------red (strongly basic)
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| electrons are _________ in a reduction rxn and ________ in an oxidation rxn | gained; lost
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| the ________ agent gains electrons, while the _________ agent looses electrons | oxidizing; reducing
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| oxidation | e- lost
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| reduction | e- gained
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| the molecule to gain e- | reduced; oxidizing agent
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| the molecule to donate e- | oxidized; reducing agent
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| what method can be used to determine the number of moles of an unknown | titration by a known reagent
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