Hi, Need help with these Astronomy questions. Thanks

Topic: Atmospheric Escape

1) The velocity of a hydrogen molecule at a temperature of 400 K is ____ m/s?

2) The velocity of a nitrogen molecule at a temperature of 400 K is ____ m/s?

3) 1/6 the escape velocity of theJupiter is ____ m/s.

4) 1/6 the escape velocity of the Ceres is ____ m/s.