A balloon filled with helium has a volume of 36.6 L at 301 K. What volume will the balloon occupy at 269 K?

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.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.

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?