What is the oxidation state of p in po4 3

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

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.