Which statement is true about oxygen -17 and oxygen-18, A they do not have the same number of protons. B there atoms have a identical mass. C they are isotopes of oxygen. D they have the same mass number .

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility