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2014-09-12T12:07:53+03:00
1 mol apa...........18 g apa
x mmoli apa........720 mg apa         x = 40 mmoli apa

nr moli=masa/masa molara = 320/64=5 moli
1 mol SO2.........6,022 * 10 la 23 atomi
5 moli SO2...................x atomi             x = 30,11 * 10 la 23 atomi

nr moli amestec = 5+2 = 7 moli
V total = nr moli * V c.n = 7*22,4 = 156,8 l
1 5 1