Question

Industrially, vanadium metal, which is used in steel alloys, can be obtained by reacting vanadium(V) oxide with calcium at high temperatures:
 
 

5Ca + V2O5  5CaO + 2V
 
In one process, 1.540 ×103 g of V2O5 react with 1.960 × 103 g Ca.
 
(a) Calculate the theoretical yield of V.

(b) Calculate the percent yield if 769.0 g of V are obtained.
 

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