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15 September, 13:02

Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 14 * 15 * 8.0ft. the density of air at 26∘c is 0.00118g/cm3.

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  1. 15 September, 13:30
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    Since we are given the density and volume, then perhaps we can determine the amount in terms of the mass. All we have to do is find the volume in terms of cm³ so that it will cancel out with the cm³ in the density. The conversion is 1 ft = 30.48 cm. The solution is as follows:

    V = (14 ft) (15 ft) (8 ft) (30.48 cm/1 ft) ³ = 0.0593 cm³

    The mass is equal to:

    Mass = (0.00118g/cm³) (0.0593 cm³)

    Mass = 7 grams of HCN
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