Explain the difference between (a) random and systematic error.
(b) constant and proportional error.
(c) absolute and relative error.
(d) mean and median.

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?

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.