Question

Detremine the root mean square speed of CO2 molecules that have an average kenetic energy of 4.21 X 10^-21

Answer 1

kinetic energy=1/2mv^2

Answer 2

m is the molar mass, and v is the speed.

Answer 3

First step: Find the molar mass of CO2

Answer 4

Then you just substitute & simplify :)

Answer 5

this is what I got when I worked it out but its saying its wrong. 9.26399975 X 10^-20

Answer 6

What did you do exactly?

Answer 7

\(\Large v_{rms}=\sqrt{\dfrac{2KE}{m_{CO_2}}}\)

m= mass of onle molecule