How would you prepare a 0.1 M stock solution of HEPES buffer, pH 7.4? (HEPES fw = 238.3) How would you use this to prepare a 10 mM solution of HEPES at pH 7.4?

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.