"Stuart H. --- math / physics / astronomy / basic chemistry"
...Answers service, where I have nearly 3,000 "Best Answer" ratings. I offer similar support and training in several sciences too: physical science & physics, astronomy, and basic inorganic chemistry
at high-school level. I am interested in most of the sciences, with a good amount of knowledge accumulated (as attested by my graduating with honors in...
10+ subjects, including chemistry