Question: how does the mass of an 16/8 o atoms compare with the mass of the original eight protons and eight neutrons that formed it?the mass of the 16/8 o atom is slightly less. *i need to know why this is correct*

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

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 is the approximate vapor pressure when the gas condenses at 70 degrees celsius