You are comparing a reaction that produces a chemical change and one that produces a physical change. What
evidence could you use to determine which type of
change is occurring?

When the volume and number of particles of a gas are constant which of the following is also constant

How many miles of water are produced if 5.43 mol pbo2 are consumed

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