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1. SO2 reacts with H2S as follows:

               2H2S + SO2 → 3S + 2H2O

When 7.50 g of H2S reacts with 12.75 g of SO2, which is the limiting reagent and what is theoretical yield?

2. Write the complete ionic and net ionic equations for following reaction.

Ca(NO3)2(aq) + Na2CO3 (aq) → ???

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