Calculate the ph and the poh of an aqueous solution that is 0.030 m in hcl(aq) and 0.065 m in hbr(aq) at 25°c.

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

What are transitions between a liquid and gas called? identify which way they are transitioning

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?