How many moles are contained in 3.131 × 1024 particles?

Is the flow of energy during vaporizing more like the flow during melting or during freezing

Describe the process that was used in this lab to create magnesium oxide, specifically identifying the type of chemical reaction. explain why the product had a higher mass than the reactant, and how this relates to conservation of matter.

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol