Topics 4.5 - 4.6

thank you mr farabaugh

Thank you mister. Marwan is really big fan

thank you sir, our entire ap chem batch thanks you profusely! greetings from the UAE

These videos are incredibly hepful. I honestly don't know what I would do without them. Thank you for your work.

who's here from parra's class

Thank you,, you are helping me understand 🙏🙏