Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 310 mg HCN per kilogram of air when inhaled.
If the HCN is formed by reaction of NaCN with an acid such as H2SO4, what mass of NaCN gives the lethal dose in the room?
2 NaCN(s) + H2SO4(aq) → Na2SO4(aq) + 2 HCN(g)
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