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Ksivusya [100]
3 years ago
9

Scientific research has found many negative effects of common household materials. Which of the following elements was once used

in paint but was found to be dangerous?
Chemistry
1 answer:
Volgvan3 years ago
4 0
Lead.  

Lead paint was a big problem and now lead has been removed from paint because it was found to be dangerous to the health of living organisms.

Hope this helps! :)
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3 0
3 years ago
A sample of hydrogen gas, has a volume of 8.56 L at a temperature 0oC and pressure of 1.5 atm. Calculate the number of moles of
erica [24]
P = 1.5atm ≈ 1519.88hPa
V = 8.56L
R = 83.1 [hPa*L] / [mol*K]
T = 0°C =273K

pV = nRT   |:RT

n = pV / RT

n = [1519.88hPa*8.56L] / [83.1 [hPa*L] / <span>[mol*K] * 273K]
n </span>≈ <u>0.57mol</u><span><u> </u></span>
3 0
3 years ago
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