Which of the following statements about a base are TRUE?
1. Bases are used in the manufacturing of soap.
2. Bases have a sour taste.
3. Fertilizer manufacture and cotton processing use bases.
1 and 3 only
2and 3 only
All of 1, 2, and 3
1 and 2 only

As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present