Chyba:
CuFeS2 %2B HNO3 %3D Fe%28NO3%293 %2B Cu%28NO3%292 %2B S %2B NO2 %2B H2O
^Neočakávaný ('%')CuFeS2 %2B HNO3 %3D Fe%28NO3%293 %2B Cu%28NO3%292 %2B S %2B NO2 %2B H2O
^Neočakávaný ('%')