Chyba:
Cr2%28SO4%293 %2B Ba%28NO3%292 %3D BaSO4 %2B Cr%28NO3%293
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Neočakávaný ('%')Cr2%28SO4%293 %2B Ba%28NO3%292 %3D BaSO4 %2B Cr%28NO3%293
^
Neočakávaný ('%')