The conversion factor for volume at STP is

or

. Since we want volume, we would use

. We conclude with the following calculations:

The answer is 82.88L N2
<span>Since at STP, the molar volume is 22.4 L, all of these containers have one mole of gas. The one with the highest atomic or molecular weight is the heaviest: :
A) H2 - 2 g/mole
B) N2 - 28 g/mole
C) O2 - 32 g/mole
D) CO2 - 44 g/mole
E)He - 4 g/mole
Ans will CO2 - 44 g/mole with the highest atomic or molecular weight is the heaviest.</span>
Answer : The correct option is, (D) CO₂, BCl₃, and Fe³⁺
Explanation :
According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.
(a) 
It is a Lewis-acid because it can accepts electron pairs.
(b) 
It is not a Lewis-acid because it can not accepts electron pairs but it is a base because it can donates and accept hydrogen ion.
(c) 
It is a Lewis-acid because it can accepts electron pairs because it has an incomplete octet and an empty 2p orbital.
(d) 
It is a Lewis-acid because it can accepts electron pairs.
Hence, the ions which behave as Lewis acids are, CO₂, BCl₃, and Fe³⁺