Laughing Gas (1914 film) squabbling. The dentist arrives, and his first patient goes in, obviously in pain. The dentist prepares the nitrous oxide anaesthesic (also known commonly as "laughing gas" due to its effects prior to and after unconsciousness). With the man unconscious he pulls his tooth, but then he can't get him to wake up. He calls for Charlie and when he arrives the dentist runs off. Charlie tries to wake him and eventually tries hitting his head with a mallet. The man revives but starts laughing. Charlie knocks him out with the mallet. The dentist then returns and Charlie is sent to
Gas collecting tube the fluid to be investigated. Measure the overall mass formula_2 to calculate the mass of the fluid inside the tube formula_27 yielding the desired mass density formula_12. If the gas is a pure gaseous chemical substance (and not a mixture), with the mass density formula_12, then using the ideal gas law permits to calculate the molar mass formula_30 of the gaseous chemical substance: formula_31 (formula_32 represents the universal gas constant, formula_33 the absolute temperature at which the measurements took place) Gas collecting tube The characterization gas collecting tube describes an oblong gas-tight container with one valve at either end. Usually