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Carbon monoxide detectors sound an alarm when peak levels of carbon monoxide reach 100 parts per million (ppm). This level roughly corresponds to a composition of air that contains 400,000 micrograms per cubic meter of air. Assuming the dimensions of a room are 18 ft x 12 ft x 8 ft, estimate the mass of carbon monoxide in the room that would register 100 ppm on a carbon monoxide detector.

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