1. The problem statement, all variables and given/known data imagine a planet with half the mass and half the radius of earth ..with temperature reaching 800K k=1.38×10-23 mass of O₂ = 5.3×10-26 does the planet have O₂ or not? 2. Relevant equations ½mv² = ½kT or ½mv² = kT or ½mv²= 3/2 kT either only vertical or anything other than downward or average KE.....not sure.. 3. The attempt at a solution ½mv² = ½kT » v ≈ 456 m/s and ve = 11.2 km/s so it shôuld have O₂and even if i take 2 or 3 degrees of freedom the planet will still have O₂ but the book and my teacher says that the planet does not have O₂ how??