22.Arrange the following molecules in order of increasing average molecular speed. All are at the same temperature. nitrogen dioxide, methane, nitrogen, krypton

Enter formulas in the boxes below: 1 = slowest, 4 = fastest

Slower to fastest

Kr, NO₂,N₂, CH₄

Further explanation

Given

Molecules :

Nitrogen dioxide, Methane, Nitrogen, Krypton

Required

Average molecular speed.

Solution

Average velocities of gases can be expressed as root-mean-square averages. (V rms)  

R = gas constant, T = temperature, Mm = molar mass of the gas particles  

So average molecular speed inversely proportional to the molar mass

The larger the molar mass the slower the gas velocity

Molar mass NO₂ = 46 g/mol

Molar mass CH₄ = 16 g/mol

Molar mass N₂ = 28 g/mol

Molar mass Kr = 84 g/mol

slower to fastest :

Kr, NO₂,N₂, CH₄

The answer options is d

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.