PLEASE HELP QUICKLY A hydroxide group (-OH) is a component of most what?

A. acids.
B. ionic compounds.
C. bases.
D. molecular compounds.


Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Air can be considered a mixture. which statement does not explain why?

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !