One mole of iron
A) is heavier than one mole of lead (Pb).
B) is 77.0 g of iron.
C) is 26.0 g of iron.
D) weighs the same as one mole of lead.
E) None of the above.

Question

Quizplus · Accepted Answer

The atomic mass of iron (Fe) is approximately 55.85 g/mol, and the atomic mass of lead (Pb) is approximately 207.2 g/mol. Therefore, one mole of iron is lighter than one mole of lead, not heavier. Also, one mole of iron weighs approximately 55.85 g, not 77.0 g or 26.0 g. The statement that one mole of iron weighs the same as one mole of lead is incorrect because their atomic masses are different.

One Mole of Iron