A. How many moles of copper would be needed to make 1 mole of Cu2O? B. How many grams of copper would you need?

How many grams of oxygen?

C. In addition to showing the ratio of atoms in a molecule, what else do the subscripts in
a formula tell us?

Dsolubility let me know if you have any other questions for chemistry

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.