The space shuttle environmental control system handles excess (which the astronauts breathe out; it is 4.0% by mass of exhaled air) by reacting it with lithium hydroxide, , pellets to form lithium carbonate, , and water. if there are nine astronauts on board the shuttle, and each exhales 20. l of air per minute, how long could clean air be generated if there were 29,000 g of pellets available for each shuttle mission? assume the density of air is 0.0010 g/ml.
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