Answer:
72 Newton
Explanation:
force=mass x acceleration due to gravity
Answer:
1. use a ruler to measure how many heights the ball falls down.
2. use notes to record observations.
In a basic solution, the concentration of OH- is greater than the concentration of H+. The pH will be greater than 7.
In an acidic solution, the concentration of H+ is greater than the concentration of OH-. The pH will be less than 7.
The correct answer is a. concentration of OH- > concentration of H+