Nồng độ mol của phân tử có trong dung dịch AlCl3 có Cl trừ bằng 0,3M

On a distance vs time graph the line of an object at rest is a

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.

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble