Posted by ty on .
Hi- we were given this question and I have no clue how to figure it out...please help!
Which gas molecules have the greatest average speed at STP?
[a] SO2( sulfur dioxide)
[b] NH3( ammonia)
[c] O2( oxygen)
[d] N20 (Dinitrogen oxide)
Ok, at stp, that means they all have the same average kinetic energy. But KE= 1/2 mv^2, so the one with the greatest speed must have the least mass.
thank you so much