Thus, Cu(NO3)2 and Fe(NO3)3 are soluble. 3. The chloride (Cl-), bromide (Br-), and iodide (I-) ions generally form soluble salts. Exceptions to this rule include salts of the Pb2+, Hg22+, Ag+, and Cu+ ions. ZnCl2 is soluble, but CuBr is not. A salt is soluble if it dissolves in water to give a solution with a concentration of at least 0.1 moles per liter at room temperature. 2  A salt is insoluble if the concentration of an aqueous solution is less than 0.001 M at room temperature. 3  Slightly soluble salts give solutions that fall between these extremes.
Lipid is a medical term for fat found in the bloodstream. There are different types of lipids, some good and some bad.igh density lipoprotein cholesterol (HDL-C). HDL-C is known as the âgoodâ cholesterol because it helps take âbadâ cholesterol out of the body. Think about HDL-C as a âtow truckâ that removes LDL-C from your blood.
Lipids. Lipids are organic compounds that contain the same elements as carbohydrates: carbon, hydrogen, and oxygen. However, the hydrogen-to-oxygen ratio is always greater than 2:1.More important for biological systems, the carbon-to-hydrogen bonds are nonpolar covalent, which means that lipids are fat soluble and will not dissolve in water.There are four biologically important lipids:1  Fats. 2  Waxes.owever, the hydrogen-to-oxygen ratio is always greater than 2:1. More important for biological systems, the carbon-to-hydrogen bonds are nonpolar covalent, which means that lipids are fat soluble and will not dissolve in water. There are four biologically important lipids: 1  Fats. 2  Waxes.