Question

What is the ratio of effusion rates of krypton and neon at the same tempurature and pressure

Answer 1

Here we go! I think this should be clear enough lol

E_Kr / E_Ne = sqrt ( M_Ne / M_Kr) 
= sqrt( 20.1797g/mol / 83.798g/mol ) 
= sqrt(0.24081) 
= 0.4907

I hope this helps you! Good luck :)