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Sav [38]
2 years ago
9

Please help! im begging!​

Mathematics
1 answer:
Dafna1 [17]2 years ago
7 0

Don't trust me but it's probably the first one. Just using context clues

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Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
Anarel [89]
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 0.00118g/cm^3, 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>
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3 years ago
LIVE TEST NEED HELP Several students made comments about this image C B D Which comment is true? "If I know the measures of A an
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3 years ago
Last year, there were b pies baked for the bake sale. This year, there were 211 pies baked. Using b, write an expression for the
Marina86 [1]

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3 years ago
30 pts Johnna is cooking a roast that says, "Cook to 160°F." What is the Celsius equivalent of this temperature? A) 65° B) 71° C
dusya [7]
B) 71 degrees celcius
3 0
3 years ago
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An enrolling high school student has the following subjects to open to her:
adell [148]
So we notice that they increase by 1
each time
first slot we have all of them so
4 choices=1st slot
3 choices=2nd slot (1 was taken for 1st slot)
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multiply
4 times 3 times 2 times 1=24
answe ris 24 ways
 

8 0
3 years ago
Read 2 more answers
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