What are the three components of water mill​

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Why is the structure of molecule important to its function?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?