How many total atoms are in one molecule of Pb(C2H2O2)2?
A) 9
B) 14
C) 3
D) 15


Answer :

, shows that its molecules contain one S atom and two O atoms; calculate its molar mass. molecules, which consist of 6.02 x 1023 S atoms and 2(6.02 x 1023) O atoms.
The answer is C,(3)