How does the mass of 1 mole of Carbon compare to the mass of 1 mole of Magnesium?
A. 1 mole of Carbon is heavier than of 1 mole of Magnesium.
B. 1 mole of Carbon lighter than of 1 mole of Magnesium.
C. They have equal masses
D. It is impossible to compare the mass of different elements
E. None of the above
