A 150 ml solution of naoh is titrated with 3. 0 m hi. It takes 75 ml of the titrant to reach the endpoint, shown when bromthymol blue changed from blue to green. As you continued adding hi past the endpoint you saw the solution turn yellow. What is the ph of the original naoh solution?.

Anurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. if the stock bottle is labeled 25 mg/ml and the order is a dose of 11.0 mg , how many milliliters will the nurse draw up in the syringe?

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal