The 4f subshell of an atom contains 14 electrons. What is the maximum number of electrons having same spin in it?

What type of reaction is zn + cucl2 → cu + zncl2?

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

What is the most common form of matter in the universe