Why does fluorine have a higher electron affinity compared to oxygen?

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?