AThe proper pH range for a swimming pool is between 7.2 and 7.8. Most pools use two substances, Na2CO3and HCL, to maintain this range. How would you adjust the pH if you found it was 8.2? 6.9?

An electromagnetic wave is composed of electrical and magnetic energy. true or false

Astronomy can best be described as a/an A. study of objects pertaining to the interior part of the Earth. B. study of objects beyond the Earth's atmosphere. C. Air Force pilot on a naval carrier. D. daily horoscope.

Student A: As the skater moves along the track, some of her kinetic energy is converted to thermal energy, so she will lose energy, causing the total energy of the system to decrease.

Dr. gavin decides that instead of conducting a 2 ' 4 independent-groups factorial design, he is going to conduct a 2 ' 4 within-subjects factorial design. which of the following things will change?

The Statue of Liberty is made of copper that has turned green because it has undergone a change. What can be said about this change?

How far into editing our human genes?

Which electromagnetic wave has the shortest wavelength? (A. Radio waves b. X-rays c. infrared rays or d. Visible light)

Which mixture can be separated based on differences in particle size of the components

What happens in an open circuit

When analyzing forces, it is allowable to break the motion and forces into horizontal and vertical components.