Ask Question
11 September, 06:39

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/cm3. part a calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft*15.0 ft*9.60ft.

+1
Answers (1)
  1. 11 September, 07:24
    0
    Given:

    Lethal dose of HCN = 300 mg/kg of air

    Density of air at 26 C = 0.00118 g/cm3

    Dimension of the room = 12 * 15 * 9.6 ft

    To determine:

    The dose of HCN in the given conditions

    Explanation:

    Volume of air = volume of the room = 12*15*9.6 ft = 1728 ft³

    Now, 1 ft³ = 28317 cm³

    therefore the calculated volume of air = 1728*28317 = 48.93*10⁶ cm³

    Density of air = 0.00118 g/cm3

    Mass of air = volume * density = 0.00118 g. cm⁻³*48.93*10⁶ cm³

    =5.77*10⁴ g = 57.7 kg

    Since the lethal dose of HCN = 300 mg per kg of air

    Then for 57.7 kg of air the lethal dose of HCN = 300 * 57.7 = 17310 mg

    Ans: The amount of HCN under the given conditions is 17310 mg or 17.3 g
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Hydrogen cyanide, hcn, is a poisonous gas. the lethal dose is approximately 300. mg hcn per kilogram of air when inhaled. the density of ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers