Scandium 15. Write the nuclear symbol for an ion with a charge of +2,20 protons, and 24 neutrons.
_a. How many electrons are in this ion?
b. Is it an anion or cation?

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

What are four significant sources of ghgs that come from wostem washington?