Question

Question #9f748

Answer 1

`~~3:7`

Explanation:

Kinetic Energy `=1/2mv^2`

As the Molecular mass of `O_2` is `32`,
`color(red)(KE_(O_2) = 1/(2)32v^2 =color(red)(16v^2)`

And the Molecular mass of `Cl_2` is `71`,
`color(blue)(KE_(Cl_2) = 1/(2)71v^2 = color(blue)(35.5v^2`

`color(red)(KE_(O_2)):color(blue)(KE_(Cl_2)) = color(red)(16v^2)/(color(blue)(35.5v^2))`

`=> (color(red)(16cancel(v^2)))/(color(blue)(35.5cancel(v^2)))~~3:7`