Five of the six treatments in this experiment use a vinegar solution. why is it important to use a water solution at the beginning of the experiment for sample a instead of just starting with sample b?

Sample answer for edge nuity: Testingg limestone with water provides a reference point, or control sample. It shows what happens if no chemical reaction and, therefore, no chemical weathering, takes place.

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2