Beaker A contains 1 mole of iron atoms,and Beaker B contains 1 mole of lead atoms. Which statement concerning these two samples is known with certainty? 
A) Beakers A and B contain samples with the same molar mass.
B) Beakers A and B contain an equal number of atoms.
C) Beakers A and B contain an equal volume of atoms.
D) Beakers A and B contain equal masses of atoms.
Correct Answer:
Verified
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