In the common lead storage battery used in automobiles, the following two half-reactions occur in acid solution: Oxidation Pb(s)+HSO−4(aq) → PbSO4(s)
Reduction PbO2(s)+HSO−4(aq) → PbSO4(s).
Write a balanced equation for the overall battery reaction.

Explanation:

Common Lead Storage Battery Used In Automobiles, The Following Two Half-reactions Occur In Acid Solution: Oxidation Pb(s)+HSO−4(aq) → PbSO4(s) Reduction PbO2(s)+HSO−4(aq) → PbSO4(s). Write A Balanced Equation For The Overall Battery Reaction.

h let me think

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).