Modelová Otázka ID 3662 - Medicína 
Kolik gramů glukózy vznikne v průběhu fotosyntézy, pokud je spotřebováno 100 litrů oxidu uhličitého (reakce probíhá za standardních podmínek)?
Správná odpověď je: A
Zjednodušená rovnice fotosyntézy vypadá takto:
6 CO2 + 6 H2O → C6H12O6 + 6 O2.
Molární hmotnost glukózy je 180 g/mol. Výpočet provedeme následovně:
n(CO2) = V/Vid
n(gluk) = n(CO2)/6 = V/(6 · Vid)
m(gluk) = n(gluk) · M(gluk) = (V · M)/(6 · Vid)
m(gluk) = (100 · 180)/(6 · 22,414) = 133,8 g.
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