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Calculeaza masele de carbon, m C , si de oxigen, m O , care se gasesc
in 124g acid carbonic, H2CO3 ?


Răspuns :

12g C.........48g O..........62g H2CO3

x....................y.................124g H2CO3

x = 12*124/62 = 24g C

y = 48*124/62 = 96g O