Which statement about the effusion rates of nitrogen and oxygen is true?
oxygen effuses 1.07 times faster than nitrogen.
nitrogen effuses 1.07 times faster than oxygen.
oxygen effuses 0.9 times faster than nitrogen.
nitrogen effuses 0.9 times faster than oxygen.

Nitrogen effuses 1.07 times faster than oxygen.

Explanation:

To calculate the rate of effusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows:

On solving we get:

Hence, Nitrogen effuses 1.07 times faster than oxygen.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

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