Liquid oxygen density

C05-0135. Liquid oxygen, used in some large rockets, is produced by cooling dry air to -183 °C. How many liters of dry air at 25 °C and 750 torr would have to be processed to produce 150 L of liquid oxygen (density =1.14 g/mL) ... 

Eligh performance liquid chromatography Density functional theory Oxygen reduction reaction Rotating disk electrode Rotating ring disk electrode... 

Liquid oxygen has a slightly bluish cast to it. As it boils, pure oxygen gas is released. The melting point for oxygen is -218.79°C, its boiling point is -182.95°C, and its density is 0.001429 g/cm3. 

Although the above are riot practical LOX compositions, these results are of considerable interest. They show that the detonation limits of LOX compns are quite wide, and that D (at least for liquid methane-liquid oxygen mixtures) is not strongly affected by considerable changes in compn or even density... 

An aerated stirred-tank fermenter equipped with a standard Rushton turbine of the following dimensions contains a liquid with density p = 1010kgm and viscosity n = 9.8 X 10 Pa s. The tank diameter D is 0.90 m, liquid depth Hl = 0.90 m, impeller diameter d = 0.30 m. The oxygen diffusivity in the liquid Dl is 2.10 X 10 5 cm- s T Estimate the stirrer power required and the volumetric mass transfer coefficient of oxygen (use Equation 7.36b), when air is supplied from the tank bottom at a rate of 0.60 m min at a rotational stirrer speed of 120 rpm, that is 2.0 s T... 

Charges of oxyliquit, 33 mm dia., containing carbon black (density about 0.3) give complete combustion to C02 within 5 min after removal from liquid oxygen and have a power 15% higher than that of standard dynamite in 25 min their strength is 35% lower than that of dynamite. 

Unlike solids and liquids, the density of a gas depends very strongly on the temperature and pressure. Also, unlike solids and liquids, we can easily calculate the density of a gas if we know the temperature and pressure. For example, what is the density of air under normal conditions (25°C and 750 torr) Recall that air is approximately 79% nitrogen and 21% oxygen (by volume). If we want to calculate the density of a sample, we need to know its mass and volume. Since density is an intrinsic physical property, we can take any sample size we want, so let s take a sample volume of 1.0 L. 

D) How does the density of liquid oxygen, 02(7), compare to the density of solid oxygen, 02(s) Explain your answer using both the data and your phase diagram. 

Liquid oxygen and nitrogen mix without appreciable change m volume hence the approximate composition of the liquid mixture can be calculated from its density at any particular temperature.1 Measurements which have been made lead to the expression... 

With this intent we measured the density, surface tension, viscosity, and vapor pressure of the ozone-fluorine system at liquid oxygen and liquid nitrogen temperatures. 

U-tube, 4 mm. i.d. and 10 cm. long, was used for the density measurement. The volume of the U-tube was determined as a function of the distance from a reference mark at the bottom of the tube. Calibrations were made at room temperature, initially with water and carbon tetrachloride, and again at cryogenic temperatures with liquid oxygen. A measured amount of liquid ozone was transferred to the U-tube, and the procedure was repeated with enough liquid fluorine to result in a solution of the desired concentration. 

Calculate the number of moles of solid mercury(l) oxide that can be produced by the reaction of oxygen gas with 25.0 mL of liquid mercury (density = 13.6 g/mL). Also, calculate the number of molecules of oxygeu required. 

This system displays (Fig. 1.9) a traditional interfacial oxygen density profile that has been the object of measurement (Pratt and Pohorille, 2002), monotonic with a width 2-3 times the molecular diameter of a water molecule. This widthis somewhat larger than that of water-alkane liquid-liquid interfaces, though it is still not a broad interface. The enhanced widthis probably associated withroughness of the stationary alkyl layer the carbon density profile is shown in Fig. 1.9 as well. 

A person accidentally swallows a drop of liquid oxygen, O2(1), which has a density of 1.149 g/mL. Assuming the drop has a volume of 0.050 mL, what volume of gas will be produced in the person s stomach at body temperature (37°C) and a pressure of 1.0 atm ... 

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