Copper (Cu) is a metal that is commonly used for electrical wiring . Determine both the number of moles of atoms and the number of atoms in a 1.35 g sa of copper . How many moles are present in the 1.35-g sample of copper?

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)