Which of the following is an example of energy conservation?
a. driving a car alone into the city at rush hour
b. leaving lights on whenever you leave a room
c. recycling aluminum soda cans
d. not insulating your home to prepare for cold winter months

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

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Stage in which a typical star has completely stopped fusion