Which of these is a mixture?

carbon

carbon dioxide

air

oxygen

50 pts plz what is the physical state of matter of baking soda.

Who determined the nature of chemical bonds?

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.