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великан007
@великан007
July 2022
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Дано:V(O2)=2.8 найти :M-? n-? m-? N-? решение
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anassstass
V (O2) = 2,8 л
1) M (O2) = 16 • 2 = 32 г/моль
2) n (O2) = V / Vm = 2,8 / 22,4 = 0,125 моль
3) m (O2) = nM = 0,125 • 32 = 4 г
4) N (O2) = NA • n = 6 • 10^23 • 0,125 = 0,75 • 10^23 = 75 • 10^21 молекул
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Answers & Comments
1) M (O2) = 16 • 2 = 32 г/моль
2) n (O2) = V / Vm = 2,8 / 22,4 = 0,125 моль
3) m (O2) = nM = 0,125 • 32 = 4 г
4) N (O2) = NA • n = 6 • 10^23 • 0,125 = 0,75 • 10^23 = 75 • 10^21 молекул