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90% * 100 000kg = 90 000kg
100g 56u
CaCO3 --> CaO + CO2
90000kg x
z proporcji wyliczam x
x = 50400kg
x t --------90%
x=90t
100g 56g
CaCO3---T---> CaO + H2O
90t x=50,4t