Sample P is 4.4 g of CO2 and sample Q is 2.24 L of N2O at STP (C = 12, N = 14, O = 16; 22.4 L mol^-1 at STP). Which of the following statements is/are correct?

Both samples contain the same number of molecules.

Both samples contain the same total number of atoms.

Both samples contain the same total number of electrons.

Both samples contain the same number of oxygen atoms.

Both samples contain the same number of molecules.

Both samples contain the same total number of atoms.

Both samples contain the same total number of electrons.

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3mc017

Sample P is $4.4 g$ of $CO X_{2}$ and sample Q is $2.24 L$ of $N X_{2} O$ at STP (C = 12, N = 14, O = 16; $22.4 L mo l^{- 1}$ at STP). Which of the following statements is/are correct?

n (P) = 4.4/44 = 0.10

and

n (Q) = 2.24/22.4 = 0.10

, so molecules are equal. Both molecules are triatomic, so atoms are equal. Electrons per molecule:

6 + 16 = 22

for

CO X_{2}

and

7 + 7 + 8 = 22

for

N X_{2} O

, so electrons are equal. Oxygen atoms are

2 \times 0.10

versus

1 \times 0.10

, so they differ.