What is the mass, in grams, of 2.11 mol of sulfur trioxide?

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Which formula can be used to calculate the molar mass of hydrogen peroxide