What kind of change is sodium hydroxide dissolving in water

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.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)