Modelová Otázka ID 2760 - 
Jaká je hmotnost oxidu uhličitého, který má za standardních podmínek objem 30 l?
Správná odpověď je: B
Pro výpočet látkového množství použijeme molární objem ideálního plynu (22,414 dm3/mol). Z látkového množství a molární hmotnosti CO2 (44 g/mol) poté vypočítáme hmotnost. Výpočet provedeme následovně:
m = n · M = (V/Vid) · M = (30/22,414) · 44 = 58,9 g.
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