Excess lead (II) nitrate solution is added to 1.30 g of zinc powder and the mixture is stirred. When the reaction is finished the lead formed is filtered, dried and weighed. It has a mass of 3.31g.
What is the percentage yield of the lead?
[A_r: Pb = 207; Zn = 65]
A. 60%
B. 70%
C. 100%
D. 90%
E. 80%