1. Calculate the pH of 0.5 M HA solution? ka=7.1*10^-4. 2. What is the pH of a 0.4 M ammonia solution? kb=1.8*10^-5​

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.