August 2018 1 113 Report
2H2(g) + O2(g)⇒2H2O(I) ΔH = -571 kj
2Ca(s) + O2(g)⇒2CaO(s) ΔH = -1269 kj
CaO(s) + H2O(I)⇒Ca(OH)2(s) ΔH = -571 kj

yang dapat dihirung entalpi pembentukan Ca(OH)2(s) sebesar.....

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