Question 7 5 points The pH of the buffer obtained by adding 20.0 g of NH4CI (NH4Cl = 53.492 g mol '] to 500.0 mL of 0.400 M NH3, is: O A. 8.971 O B.9.178 O C. 4.958 O D.5.264.

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Which other elements contain the same number of outer electrons as sodium

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring