if the electron affinity for an element is a negative number, does it mean that the anion of the element is more stable than the neutral atom?

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)