NGC 1232 is a spiral galaxy about twice the size of our Milky Way Galaxy. It is located about 100 million light-years from Earth. Which of the following best explains why the physical properties of these two galaxies are similar? A. The temperatures of the stars within each galaxy are all identical
B. The two galaxies have the same shape and both orbit the same star
C. The two galaxies formed from the same materials and in the same way
D. All of the stars making up each galaxy are the same age and their life cycles as the sun

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

um i think it might be a car?

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.