As the ball falls, its energy will decrease and its energy will increase

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland