They do not react, the Calcium cannot displace the Potassium as it is less reactive.
2 Ca + 2O2 = 2(CaO2)
Ca + Br2 = CaBr2 doesn't need to be balanced.
Exothermic (releases energy)
HC2H3O2(aq) + KOH(aq) -> H2O(l) + KC2H3O2(aq)It's already balanced, since there are two acetates, two Hydrogens on each side, and 1 oxygen on both sides :)
Ca (2+) + CO3 (2-) --> CaCO3
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2 Ca + 2O2 = 2(CaO2)
The aba-ca-by =2
Ca + Br2 = CaBr2 doesn't need to be balanced.
2Ca + 3O2 + 2C -> 2CaCO3
NaOH KOH Ca(OH)2
Exothermic (releases energy)
It is already balanced
Ca(OH)2 + H2SO4 >> CaSO4 + 2H2O
HC2H3O2(aq) + KOH(aq) -> H2O(l) + KC2H3O2(aq)It's already balanced, since there are two acetates, two Hydrogens on each side, and 1 oxygen on both sides :)
Calcium and water react to form calcium hydroxide and hydrogen. Ca + 2H2O --> Ca(OH)2 + H2
Ca (2+) + CO3 (2-) --> CaCO3