Calculate the molar concentration of the polycyclic aromatic hydrocarbon (pah), anthracene (178.23 g/mol), that was found in a well water sample at a concentration of 6.92 ppb. assume the density of the water is 1.00 g/ml.

Explanation:

It is known that 1 ppb equals to 1 .

Therefore, 6.92 ppb is 6.92 in 1 liter of sample.

Hence, we will calculate the moles of Anthracene as follows.

          = mol PHA (Anthracene)

As we assume that volume of the solution is 1 L. So, calculate its molarity as follows.

              Molarity =

                            =

                           = M

Thus, we can conclude that molar concentration of the polycyclic aromatic hydrocarbon (PAH) is M.

explanation:

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