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calculate the standard internal energy change for the reaction OF2 (g) + H2O (g) ------- >O2 (g )+ 2HF ( g) at298 ok. the standard enthalpies of formation of OF2, H2O , HF are +20 ,+250 and - 270 kj/mol
A 25.00-mL sample of hydrochloric acid solution requires 24.16 mL of 0.106 M sodium hydroxide for complete neutralization. What is the concentration of the original hydrochloric acid solution?
During the research that led to production of the two atomic bombs used against Japan in World War II, different mechanisms for obtaining a supercritical mass of fissionable material were investigated.
The ship must unload 1000 metric tons within 5 hours to avoid demurrage charges. Estimate the power required by the pump. Take the pump efficiency as 70%. Physical properties of toluene: density 874 kg/m3, viscosity 0.62 mNm-2 s.
If the capacitor, consisting of three equal sections, is connected in delta across the supply lines, calculate the capacitance required in each section.
What information in the article indicates that it was peerreviewed?
What is the maximum possible power that could be produced by a plant given the temperatures of the furnace and the river?
Find the value of Ia for which the generator efficiency is a maximum.
A thermally insulated resistor of 20 ohms has a current of 5 A passed through it for 1 s. It is initially at 20 degrees C.
Suppose you discover after the combustion has been carried out that the thermocouple is not functioning properly. Use the final pressure gauge reading of 75.3bar to estimate the adiabatic flame temperature of cyclopentane. Do not assume ideal gas ..
Determine the reactive kVA of the motor, and the overall power factor of the motor and the load.
For honey, which is Newtonian, the plot should be linear with the slope equal to the viscosity. Calculate the viscosity (or let Excel do it for you). Do a little Google or literature searching and see if you can find a value for the viscosity of h..
Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the molar heat capacity of silver). c. It takes 1.25 kJ of energy to heat a sample of pure silver from 12.0C to 15.2C. Calculate the mass of the sample of silv..
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