I just need help getting these answers

7. An object becomes charged due to an excess or a deficiency of electrons. Knowing the exact number of excess or deficient electrons in an object allows one to determine the object's charge. The charge of one electron is 1.6x10" C. Use this to determine the charge of the following objects. Object # Excess or Deficient Electrons Quantity and Kind of Charge (C) A 2.0 x 10' deficient electrons B 1.4 x 104 deficient electrons C 2.1 x 109 excess electrons D 6.1 x 10' deficient electrons E 9.0 x 1012 excess electrons