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storchak [24]
3 years ago
5

What is name of first man made element?

Chemistry
2 answers:
enot [183]3 years ago
7 0
The first element discovered through synthesis was technetium<span>—its discovery being definitely confirmed in 1936. Hope that helps.</span>
Gennadij [26K]3 years ago
4 0
So the question ask to determine or states the name of the first man made element, and base on my further research about the said element and skimming some history books, the first element that is man made is name as Technetium. I hope you are satisfied with my answer and feel free to ask for more 
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Answer:

neq N2O4 = 0.9795 mol.....P = 0.5 atm; T = 25°C

Explanation:

             ni      change    eq.

N2O4    1          1 - x       0.8154.....P = 1 atm; T = 25°C

NO2      0        0 + x          x

∴ x = neq = Peq.V / R.T.....ideal gas mix

if P = 0.5 atm, T = 25°C; assuming: V = 1 L

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