Find Number of protons, neutrons and electrons in next atoms: a.) Fe p: n: e:

b.) F p: n: e:

c.) 21 ? p: n: e:

d.) 11? p: n: e:

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.

Drug abuse will not lead to physical and psychological dependence. true or false ?

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?