1.5 mol CaCO3 in 0.5 L solution. What is the molarity?

What overall charge must all compounds have

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 ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?