Localized adiposity. 1  ICD-9-CM 278.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 278.1 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
One mole of an ideal gas has a volume of 22.7 L at STP as defined by IUPAC. At normal conditions such as standard temperature and pressure, most real gases behave qualitatively like an ideal gas. Many gases such as nitrogen, oxygen, hydrogen, noble gases, and some heavier gases like carbon dioxide can be treated like ideal gases within reasonable tolerances.
An ideal gas can follow the formula PV=nRT. (P-pressure, V-volume, n-amount of moles, R-Avogrado constant, T-absolute temperature). A real gas does not always follow this formula. 1  An ideal gas is infinitely compressible, a real gas will condense to a liquid at some pressure. 2  The particles of an ideal gas lose no energy to its container. 3  A real gas conducts and radiates heat, thereby losing energy.