What is the molarity of a solution that contains 16.0
g NaOH in 2.00 L of solution?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Which is an example of a reversible physical change?