Oxygen specific heat

Oxygen specific heat at constant volume Nitrogen specific heat at constant volume Hydrogen specific heat at constant volume Water specific heat at constant volume Oxygen thermal conductivity Nitrogen conductivity Hydrogen thermal conductivity Water thermal conductivity... 

Operational Characteristics. Oxygen generation from chlorate candles is exothermic and management of the heat released is a function of design of the total unit iato which the candle is iacorporated. Because of the low heat content of the evolved gas, the gas exit temperature usually is less than ca 93°C. Some of the heat is taken up within the candle mass by specific heat or heat of fusion of the sodium chloride. The reacted candle mass continues to evolve heat after reaction ends. The heat release duting reaction is primarily a function of the fuel type and content, but averages 3.7 MJ/m (100 Btu/fT) of evolved oxygen at STP for 4—8 wt % iron compositions. 

Nuclear magnetic resonance spectroscopy of the solutes in clathrates and low temperature specific heat measurements are thought to be particularly promising methods for providing more detailed information on the rotational freedom of the solute molecules and their interaction with the host lattice. The absence of electron paramagnetic resonance of the oxygen molecule in a hydroquinone clathrate has already been explained on the basis of weak orientational effects by Meyer, O Brien, and van Vleck.18... 

At the other temperature extreme we have the measurements of specific heats executed at the temperatures of liquefied gases. A known mass of the substance is dropped into liquid carbon dioxide (— 78°), oxygen (— 183°), or hydrogen (— 250°), and the volume of gas liberated is measured. 

A special attention is to be devoted to copper, which is very often used in a cryogenic apparatus. The low-temperature specific heat of copper is usually considered as given by c = 10-5 T [J/g K], However, an excess of specific heat has been measured, as reported in the literature [59-69], For 0.03 K < T< 2K, this increase is due to hydrogen or oxygen impurities, magnetic impurities (usually Fe and Mn) and lattice defects [59-66], The increase of copper specific heat observed in the millikelvin temperature range is usually attributed to a Schottky contribution due to the nuclear quadrupole moment of copper [67,68],... 

The products for the partial combustion of butane in oxygen were found to contain C02 and CO in the ratio of 4 1. What is the actual heat released per mole of butane burned if the only other product is H20 The reactants are at 25 °C and the products achieve 1000 °C. Use average estimates for specific heats. For butane use 320 J/K mole. 

Formaldehyde is stoichiometrically burned at constant pressure with oxygen (gas) to completion. C02 and H20, condensed as a liquid, are the sole products. The initial temperature before the reaction is 50 °C and the final temperature after its completion is 600 °C. Find, per mole of fuel, the heat transferred in the process, and state whether it is added or lost. Assume a constant specific heat of 35 J/mole K for all the species. Use Table 2.2 for all of your data. 

Use specific heat values of 250 J/K mole for butane and 36 J/K mole for oxygen and nitrogen. 

Room volume Ambient temperature Ambient density Heat of combustion Fuel gas entering temperature Exiting gas temperature Exiting oxygen mass fraction Specific heat at constant pressure... 

The heat of reaction at 291 K is AH = -28.611 kcal/gmol. The oxide is made at the rate of 5000 kg/day by feeding oxygen at 423 K with 10% in excess and ethylene at 463 K. The products leave at 548 K. Calculate the hourly heat removal from the reactor for converting 80% of the ethylene feed. Equations for the specific heats in cal/gmol-K are,... 

Use such reasonable approximations as (1) Air consists solely of nitrogen and oxygen in exactly 4 1 volume ratio (2) other chemical surface reactions can be neglected because of the short times (4) ideal shock wave relations for pure air with constant specific heats may be used despite the formation of nitric oxide and the occurrence of high temperature. 

Scientific awareness of a low-temperature transition in magnetite began in 1929 with the observation of a A-type anomaly in the specific heat at about 120 K. The anomaly was typical of an order-disorder transition, but it was well below the magnetic-ordering temperature Tc = 850 In 1931, Okamura observed an abrupt semiconductor-semiconductor transition near 120 K. The transition exhibits no thermal hysteresis, but the transition temperature is sensitive to the oxygen stoichiometry. More recent specific-heat measurements show the presence of two resolvable specific-heat peaks at the transition temperature the lower-temperature peak near 110 K appears to be due to a spin reorientation. 

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