Environmental science

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Each month the Speedy Dry Cleaning Company buys one barrel (0.160 m3)
of dry cleaning fluid. Ninety percent of the fluid is lost to the atmosphere and 10%
remains as residue to be disposed of. The density of the dry cleaning fluid is 1.5940
g/mL. Draw a mass-balance diagram and estimate the monthly mass emission rate to
the atmosphere (in kilograms per month).

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