Amixture of he, ar, and xe has a total pressure of 3.00 atm . the partial pressure of he is 0.300 atm , and the partial pressure of ar is 0.350 atm . what is the partial pressure of xe?
express your answer to three significant figures and include the appropriate units.

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal