BITSAT2017ChemistrySome Basic Concepts of ChemistryActual
Which of the following has the largest number of moles?
Options
- A8   g of oxygen atoms
- B16   g of oxygen gas
- C14   g of nitrogen gas N 2
- DAll have the same number of moles
Correct answer
D. All have the same number of moles
Step-by-step solution
∵   n = ( actual   mass )   ( molar   mass ) (a) n = w m = 8 16 = 1 2   mole (b) n = 16 32 = 1 2   mole (c) n = 14 28 = 1 2   mole (d) Thus, all have the same number of moles.