Use the information in the square to answer the questions about copper. A purple box has C u at the center and 29 above. Below it says copper and below that 63.55. How many protons are in an atom of copper? How many electrons are in an atom of copper? How many neutrons are in an atom of copper? Round your answer to the nearest whole number.

What happens when light is scattered?

How many valence electrons are in atom of radon?

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices