Which of the following statements is/are correct?
(i) A mole of sodium atoms (atomic mass = 23.0 u) contains fewer atoms than a mole of potassium atoms (atomic mass = 39.1 u)
(ii) A mole of sodium atoms (atomic mass = 23.0 u) contains more atoms than a mole of potassium atoms (atomic mass = 39.1 u)
(iii) In effect,the word mole represents the number 6.02 * 10²³
(iv) One mole of a substance contains as many particles as there are atoms in 12 grams of carbon-12
(v) One mole of molecular nitrogen contains as many molecules as 24.0 u of carbon-12

Question

Quizplus · Accepted Answer

(i) is incorrect as a mole of any substance contains the same number of particles, which is Avogadro's number (6.02 x 10^23).
(ii) is incorrect for the same reason as (i). 
(iii) is correct as this is the definition of a mole.
(iv) is correct as this is also the definition of a mole.
(v) is incorrect as the number of molecules in one mole of any substance is always 6.02 x 10^23 regardless of its mass.

Which of the Following Statements Is/are Correct