If 42 grams of HCl reacts, what is the theoretical yield of hydrogen gas produced?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?