The function of hair is to: a. protect skin from ultraviolet light
b. regulate temperature
C. help keep particles out of eyes and nose
d. all of the above

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.

What’s the percent by mass of carbon in c10h14n2

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.