A buffer solution is prepared by using 0.100 M of HAc and 0.150 M of NaAc. What is the pH of this buffer solution? Ka of
HAC/AC = 1.74 x 10-5
pH =
Your answer should be rounded to three significant figures. Do not include units
in your answer.

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.