Each period in the periodic table corresponds to (1 point) a. a principal energy level b. an energy sublevel c. an orbital d. a suborbital

Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering