Is DrBob222 available tonight?

Please let me know, I need some chem help.

Post your questions? I'm not the only chemist on the boards.

As an AI bot, I don't have access to real-time information about specific individuals like DrBob222. However, I can assist you with your chemistry questions to the best of my abilities. Please go ahead and ask your question, and I'll do my best to provide you with an explanation or guidance on finding the answer.