Question: I need help solving this problem. Pls help me by answering and showing step by step. Problem 4: You are in an old spy movie,

I need help solving this problem. Pls help me by answering and showing step by step.

Problem 4: You are in an old spy movie, and have been locked into a small room (volume 1,000 ft). You suddenly realize that a poison gas has just started entering the room through a ventilation duct. You are safe as long as the concentration is less than 100 mg/m. If the ventilation air flow rate in the room is 100 ft/min and the incoming gas concentration is 200 mg/m, how long do you have to escape?

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