Question

what will be the balancing for this

Answer 1

Hey there,
Here is your answer ⤵⤵⤵

1)MgCO3(s) + 2 HCl(aq) = MgCl2(aq) + H2O(l) + CO2(g)

2) 2 CU(NO3)2 = 2 CUO + 4 NO2 + O2

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Answer 2

1) In this H is replaced by Mg because Mg is reactive than Hydrogen that's why H is replaced by Mg

2) Second equation is wrong because Oxygen is 6 but in last it is 5 only then this is wrong