If p = const., then dp = 0, and, from 1, p dV = R dT; i.e., the work done by the gas in expanding through the differential volume dV is directly proportional to the temperature change dT. If the gas has a specific heat at constant pressure of Cp, then dq = Cp dT, and, from 2 (with 3),
A dietary supplement is a product intended for ingestion that contains a dietary ingredient intended to add further nutritional value to (supplement) the diet. A dietary ingredient may be one, or any combination, of the following substances: a vitamin.
Dietary supplements are widely available in the United States in health food stores, grocery stores, pharmacies, on the Internet, and by mail. People commonly take them for health-related reasons. Common dietary supplements include vitamins and minerals (such as vitamin C or a multivitamin), botanicals (herbs and plant products, such as St. John's wort), and substances that come from a natural source (such as omega-3 fatty acids).