Which type of wave interaction is shown by the water waves in the photo? A. Reflection
B. Refraction
C. Diffraction
D. Interference

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?