Which of the following equations are balanced ? (a) Zn + HCl→ ZnCl2 + H2 (b) CH4 + 2O2 → CO2 + 2H2O (c) Mg + O2 → MgO (d) 2HgO → 2Hg + O2 (e) Zn+ H2SO4 → ZnSO4+ H2
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b and d and e.in eqation b nbr of carbons hydogens and oxygens in reactants is equal as that of products.
In equation d 2 moles of HgO it means 2 Hgs and 2 Oxygens are there and we get in products same nbr of Hg and O equation is balanced
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The correct option is 2HgO to form 2Hg + O2
Hope it's helps!!
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