A buffer solution contains 0.100 M fluoride ions and 0.126 M hydrogen fluoride. What is the concentration (M) of hydrogen fluoride after addition of 9.00 mL of 0.0100 M HCl to to 25.0 mL of this solution

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Building glycogen from glucose molecules is an example of

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments