Question

For each of the following precipitation reactions, calculate how many grams of the first reactant are necessary to completely react with 17.7 g  of the second reactant.

1.  2KI(aq)+Pb(NO3)2(aq)→PbI2(s)+2KNO3(aq), m=?g

2. Na2CO3(aq)+CuCl2(aq)→CuCO3(s)+2NaCl(aq)

3.  K2SO4(aq)+Sr(NO3)2(aq)→SrSO4(s)+2KNO3(aq)

 

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