A student dissolved 28.20 g of CuNO3, in enough water to make 50.00 ml. of stock solution. He took 5.80 ml of the stock solution and then diluted it enough water to give 20.00 mL of a final solution. What is the molar concentration of the dilution? Record your answer with 3 decimals.

What diagram shows the ionic compound of magnesium oxide

May someone me with these science questions

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.