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2 years ago

Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×9.00ft.

1 answer:

6 0

The lethal dose of Hydrogen cyanide (HCN ) is approximately 300.mg/kg of air when inhaled. Its density at 26 C is 0.00118 g/cm3 . Mass is the product of density and volume.

Given are the following:

m= dv

d = 0.00118 g/cm3

v = 12.00 ft x 15.00 ft x 9.00 ft
v = 365.8 cm x 457.2 cm x 274 cm
v = 45,824,790 cm3

Substitute:
m= dv = (0.00118 g/cm3)( 45,824,790 cm3)
m= 54,073 g

To find the lethal dose in the room:
(300 mg/kg)(1kg/1000g) (54,073 g) = 0.016g of HCN will be considered lethal.

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TRUE OPTIONS ARE:

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Step-by-step explanation:

graph attached and complete question below:

Which statements are true about the temperatures Luis recorded on the graph? Check all that apply.

The temperature increased until 4:00 p.m.
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From 1600 to 1800 hours (4 - 6pm), the temperature stayed same (horizontal line). This doesn't mean the temperature wasn't recorded. (2nd OPTION FALSE).

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