Which of these might a scientist do as part of the scientific process? a. observe the natural world b. answer ethical questions c. hide experimental data d. make unsupported claims

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely