Write the symbols for two carbon isotopes one with 5 neutrons and the other one with 7 neutrons

When a septic tank backs up a goes in to clean it out

This statement about matter and its behavior is best classified as a

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.