ANSWER ALLL

Copper (Cu) is a metal that is commonly used for electrical wiring. Determine the mass of a copper sample containing 5.891018 atoms. HOW DO WE GET THERE? What is the mass of 9.78106molCu? gCu ( Next) (3 of 4) If 3.08g of gold are plated onto a piece of jewelry, how many gold (Au) atoms are present? HOW DO WE GET THERE? How many atoms are present in 0.0156mol Au? atoms Au (3 of 4) Mercury, the common element used in weather barometers, has the elemental symbol Hg. What is the mass (in grams) of a sample of mercury containing 50 atoms? HOW DO WE GET THERE? What is the mass (in amu) of 50 mercury atoms? amu Which compound has a greater mass percent of oxygen, Na2CO3 or Fe(NO3)3 ? HOW DO WE GET THERE? What is the mass percent of oxygen in Na2CO3 ? Mass percent of O= %O ( Next) (4 of 8)