If a buffer solution is 0.290 m in a weak acid (ka = 5.4 × 10-5) and 0.570 m in its conjugate base, what is the ph?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

Correct relationship between molecular formula and empirical formula