Beverage companies wanted to determine which dark-colored carbonated beverage gave people more energy: Pepsi, Coca Cola, Dr. Pepper, RC, or water with brown food coloring. They
had 5 groups of 100 people drinking nothing but one of the four beverages for a whole week
and then measured their energy level. What is the control group?

Can someone me with these questions plz.

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

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