Show the calculation of (1) the expected grams of urea (CH4N2O) formed in the reaction of 6.5 grams of lead cyanate (Pb(CNO)2) with excess ammonium hydroxide and then show the calculation of (2) the % yield if the actual yield of urea is 1.89 grams. Reaction is shown below:
Pb(CNO)2 + 2 NH4OH → Pb(OH)2 + 2 (H2N)2CO (Urea)
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