The atomic number of oxygen is 8, because oxygen has a. electrons in eight shells. b. eight protons in the nucleus. c. a second shell with eight electrons. d. an atomic mass of 8.

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions