Which of these shows magnesium and oxygen immediately before they join to form an ionic substance?
a. mgo
b. mg + o
c. mg2- + mg2+
d. mg2+ + mg2-

What is the speed of an object at a given moment?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell