principles

  1. A

    Principles of Leather Conditioner

    That's organic chemistry, right, skin? Leather? We want to restore an old saddle for the children. It is long neglected. Dried out. Scuffed. But not ripped or cracked open. Reins, stirrup leathers, bridle, all the same. We've googled and looked at many sites talking about leather...
  2. D

    Chemistry principles --- please help :)

    Hello everyone. I need help explaining these things. I have included the answers that I think I might know, but please help me with those and the blank ones. Thank you! :o:o Use chemical principles to explain each of the following: (a) A pressure cooker is used to cook food at higher...