By referring to the particulate theory of matter, explain the following statement: A solid lump of iron has a high density​

Calculate the number of molecules present in 0.750 mol of mgo.

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution