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masa CaCO3 = 100g/mol
masa CO2 = 44g/mol
wg reakcji:
100g CaCO3---------------44g CO2
3g CaCO3 -------------------- x
x = 1,32g CO2
Ba(OH)2 + CO2 ---> BaCO3 + H2O
1 mol = 1000milimoli
wg reakcji
1000milimoli Ba(OH)2 ----------- 44g CO2
x milimoli Ba(OH)2 ----------------- 1,32g CO2
x = 30milimoli Ba(OH)2