A sample of KHP weighing 0.503 grams was placed in an Erlenmeyer flask and 100 ml distilled water was added to dissolve the acid. Two drops phenolphthalein were added and a light pink endpoint was observed after the addition of 27.3 mL NaOH. What is the Molarity of the NaOH solution

Enzymes affect the reactions in living cells by changing the

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

11) burning your hand when accidentally touching a hot plate is an example of which heat transfer? a. conduction b. convection c. radiation d. none of these