Determine the number of atoms in a sample of nickel that has a mass of 8.30 x 10-12 g.

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

How many moles of al3+ ions are in 1.25 moles of al2o3

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.