Calculating molar concentration of chlorofluorocarbons?

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nmbrown
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CCl3 and CCl2F2 have been linked to ozone depletion. They were found in quantities of 261 and 509 parts per trillion by volume. Compute the molar concentration of these gases under conditions typical of 10degrees C and 1 atm.
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BJack
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What have you tried? You should probably assume that your air is behaving as an ideal gas, so you can work out the overall molar concentration of the air, and from that the molar concentrations of your two CFCs.
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