Question

We can be sure that a mole of table sugar and a mole of vitamin C are equal in their...

(A) mass
(B) volume
(C) atoms
(D) molecules

Answer 1

A mole of table sugar and a mole of vitamin C are equal in their number of molecules, as both contain Avogadro's number of molecules. They will not have the same mass or volume due to different molar masses and densities.

Step-by-step explanation:

You are correct that both a mole of table sugar (sucrose) and a mole of vitamin C (ascorbic acid) will contain the same number of molecules. This is due to the fact that one mole is defined as having Avogadro's number of entities, which is 6.022×1023. Therefore, option (D) molecules is correct. We can be sure that a mole of table sugar and a mole of vitamin C are equal in their number of molecules.

The molar mass of any substance is numerically equivalent to its atomic or formula weight in amu. By understanding that a mole represents this fixed number of molecules, it emphasizes why a mole of different substances will not necessarily have the same mass or volume, depending on the individual molar masses and densities of the substances.