An atom of calcium is represented by 4220ca. how many neutrons are in the nucleus of this atom?

Sex cells from female reproductive organ? 1) mitosis 2) fertilization 3) zygote 4) eggs 5) meiosis 6) sperm

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

What will most likely happen when two bromine atoms bond together?