Compare and contrast protons, neutrons, and electrons, nucleus, electron cloud and include definition charge and position in the atom

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

What is the independent variable in this investigation? mass volume sample number substance density

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?