In the copper- planting solution lab placed copper pennies in vinger is an weak acid with hydrogen ions when you put the pennies in the vinger you should haev abserved small gas bubbles. what were these bubbles composed of and how did they form

The electromagnetic force acts between what

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

What is the empirical formula for c4h8o2