Substance X is a compound containing 632mg of manganese and 368mg of oxygen. Substance X is shown below. Manganese has a relative atomic mass of 55 and oxygen has a relative atomic mass of 16. What is the
value of y in the formula below?

Why does a red shoe appear red in daylight

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?