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Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 300. mg HCN per kilogram of air when inhaled. The density of air at 26 ∘C is 0.00118 g cm−3. Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 3.70 m×4.60 m×3.00m. Express your answer to three... show more Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 300. mg HCN per kilogram of air when inhaled. The density of air at 26 ∘C is 0.00118 g cm−3.

Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 3.70 m×4.60 m×3.00m.
Express your answer to three significant figures and include the appropriate units.
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