Which of the following contains the same number of molecules?(A) 1g of

1.	Which of the following contains the same number of molecules?(A) 1g of O2 2g of SO2(B) 1g of CO2, 1g of N2O(C) 112ml of O2 at STP, 224ml of Helium at 0.5 atm and 273K(D) 1g of oxygen, 1g of ozone
Answer» ANSWER: (A) 1g of O² & 2g of SO² Explanation: 1 MOLE = 6.022 x 1023 atoms 1 g = Na/mass of atom = Na/32 (For o2) 1 mole = 6.022 x 1023 atoms 1 g = Na/mass of atom = Na x 2/64 = Na/32 (For so 2) HENCE PROVED

Which of the following contains the same number of molecules?(A) 1g of O2 2g of SO2(B) 1g of CO2, 1g of N2O(C) 112ml of O2 at STP, 224ml of Helium at 0.5 atm and 273K(D) 1g of oxygen, 1g of ozone

Answer»

(A) 1g of O² & 2g of SO²

Explanation:

1 MOLE = 6.022 x 1023 atoms

1 g = Na/mass of atom

= Na/32

(For o2)

1 mole = 6.022 x 1023 atoms

1 g = Na/mass of atom

= Na x 2/64

= Na/32

(For so 2)