21. At higher-than-standard elevation ( sea level ) and higher-than-standard temperature , air density is lower than standard density. 22. A variation in standard temperature can result in a significant volumetric variation for the same mass flow rate. 23. He also devised a special " physiological thermometer " in which zero was the standard temperature of health. 24. The volume of the gas is calculated as if measured at standard temperature and pressure ( STP ). 25. Assuming a reference temperature of 0�F, the following formula may be used under standard temperature ranges and pressure: 26. It has the chemical formula Si 3 H 8, and is a liquid at standard temperature and pressure. 27. Textile measurements are taken at a standard temperature and humidity, because fibers can absorb moisture from the air. 28. At normal conditions such as standard temperature and pressure, most real gases behave qualitatively like an ideal gas. 29. They have very similar properties : they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure. 30. One cubic meter of air at 20 �C has a mass of 1.204 kg at standard temperature and pressure.
