The rates of a number of homogeneous gas phase reactions likely to occur in dense interstellar clouds composed primarily of molecular hydrogen are considered. Over 100 reactions are included; of these, more than half have known rate constants. These reactions are sufficient to produce and destroy polyatomic species such as H2O, HCN, NH3, and H2CO. Steady-state abundances of about 35 species are calculated for clouds of density 1 0 < < 106 cm -3. Calculations are performed for cosmic-ray-induc...| ADS
Learn how to calculate pH. Get the pH calculation formula and see examples of how to use it. Learn whether pH is acidic, neutral, or basic.| Science Notes and Projects
Learn the basics of acid-base chemistry. Get the definitions and examples of acids and bases and learn about the neutralization reaction.| Science Notes and Projects
An argument which leads to the conclusion that (HO, HO) and (HO, OH) in water are artificial concepts is given. This results from the fact that their definitions involve no actual thermodynamic process. On the other hand, (HO, HO) and (HO, OH) are related to actual thermodynamic processes and are therefore meaningf| pubs.rsc.org
Learn what a chemical equation is and how to write one properly. See the parts of the equation and understand what they mean.| Science Notes and Projects
Get the definitions of cations and anions. See examples of the two types of ions, learn how they are different, and see periodic table trends.| Science Notes and Projects
