Chemistry of Solutes and Solutions

Practice Quiz 3

 

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The maximum concentration of p-dichlorobenzene in drinking water that
is allowed by the EPA is 0.075 mg/L. Express this as a weight percent.
(You can assume the density of the water solution is 1.0g/mL.)







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The maximum concentration of PCB's in drinking water that is allowed by
the EPA is 0.0005 mg/L. Express this as a weight percent. (You can
assume the density of the water solution is 1.0g/mL.)







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What type of colloid is pudding?







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The maximum concentration of Aldicarb in drinking water that is allowed
by the EPA is 0.003 mg/L. Express this as a weight percent. (You can
assume the density of the water solution is 1.0g/mL).







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What type of colloid is paint?







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The maximum concentration of arsenic in drinking water that is allowed
by the EPA is 0.050 mg/L. Express this as parts per billion. (You can
assume the density of the water solution is 1.0g/mL).







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What type of colloid is fingernail polish?







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The maximum concentration of lead in drinking water that is allowed by
the EPA is 0.015 mg/L. Express this as part per billion. (You can assume
the density of the water solution is 1.0g/mL).







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What type of colloid is the froth on root beer?







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The maximum concentration of p-dichlorobenzene in drinking water that
is allowed by the EPA is 0.075 mg/L. Express this as parts per billion.
(You can assume the density of the water solution is 1.0g/mL).



d. 75 ppb  

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