Step-by-step explanation:
this is the answer of this question
Answer:
13 1/12
Step-by-step explanation:
Dimensions of the room in cm = 2.54 x 12 by 15 x 2.54 by 2.54 x 8.5 = 30.48 by 38.1 by 21.59
Volume of the room in cubic cm = 30.48 x 38.1 x 21.59 cubic cm = 25,072.21 cubic cm
Given that the density of air at room temperature is

, thus the mass of air in the room = 25,072.21 x 0.00118 = 29.59 g = 0.0296 kg
Given that the lethal dose of HCN is approximately 300 mg HCN per kilogram of air when inhaled, thus the <span>amount of HCN that gives the lethal dose in the small laboratory room is given by 300 x 0.0296 =
8.88 mg.</span>
You can multiply everything by 7 to make things simpler.
3x + 5 = 4
3x = -1
x = -1/3
No, 6,500 is one hundred times as much as 65, because of the two zeros on the end. 100 and 6,500.