Question

How many moles of lead (Pb) atoms are in 354 g Pb?
Select one:
a. 9.72 × 10-25 mol
b. 0.585 mol
c. 1.71 mol
d. 3.52 × 1023 mol

Answer 1

For the answer to the question above asking how many moles of lead atoms are in 354g Pb.
The answer is the third one among the given choices which is c. 1.71mol. Start what you have and apply what you know: 
354g Pb *1molPb/207g Pb =1.71 mol Pb