Respuesta :
Explanation:
It is known that relation between average molecular speed and and molar mass is as follows.
[tex]\frac{R_{1}}{R_{2}} = \sqrt{\frac{M_{2}}{M_{1}}}[/tex]
where, [tex]R_{1}[/tex] = average molecular speed of gas 1
[tex]R_{2}[/tex] = average molecular speed of gas 2
[tex]M_{1}[/tex] = molar mass of gas 1
[tex]M_{2}[/tex] = molar mass of gas 2
This means that more is the molar mass of a gas lesser will be its average molecular speed.
Hence, molar mass of nitrogen ([tex]N_{2}[/tex]) = 14 g/mol
Molar mass of helium (He) = 2 g/mol
Molar mass of oxygen ([tex]O_{2}[/tex]) = 16 g/mol
Molar mass of carbon dioxide ([tex]CO_{2}[/tex]) = 44 g/mol
Thus, given gases are arranged in order of increasing average molecular speed at [tex]25^{o}C[/tex] as follows.
[tex]CO_{2}[/tex] < [tex]O_{2}[/tex] < [tex]N_{2}[/tex] < He
Answer:
The correct answer is [tex]CO_{2} >O_{2} > N_{2} > He[/tex]
Explanation:
The relationship between the molecular weight of the compound and the speed of the compound is inverse.
Hence, the more the molecular weight, the less the molecular speed.
The molecular weight is as follows:-
carbon dioxide has 44, oxygen has 32, nitrogen has 28 and helium is 4.
Therefore, the correct sequence is [tex]CO_{2} >O_{2} > N_{2} > He[/tex]
For more information, refer to the link:-
https://brainly.com/question/19041116?referrer=searchResults
