The average atomic mass of chromium is 52.00 amu. what is the mass of 3.0 mol of chromium?

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.