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A sheet of steel 1.5 mm thick has nitrogen atmospheres on bothsides at 1200oC and is permitted to achieve asteady-state diffusion condition. the diffusion coefficient fornitrogen in steel at this temperature is 6 x 10-11m2/s, and the diffusion flux is found to be 1.2 x10-7 kg/m2s.Also, it is known that the concentration of nitrogen in the steelat the high-pressure surface 4 kg/m3.
How far into the sheet from this high-pressure side will theconcentration be 2.0kg/m3?
How many grams of KCN will be needed to make 817 mL of pH = 11.836 solution when added to distilled water (Ka HCN= 6.2x10-10)
What is the frequency of the photon emitted when a molecule of NaH drops from the second to first level?
If a solution contains 0.60 mol of OH^-, how many moles of H^+ would be required to reach the equivalence point in a titration. Express your answer using two significant figures.
limestone is decomposed by heating to quicklime and carbon dioxide. Calculate how many grams of quickline can be produced from 1.0kg of limestone
When 0.097 moles of Magnesium hydroxide (Mg(OH)2) is dissolved in water, how many moles of ions are released into the solution ?
what is the change in enthropy for this process in kJ/K*mole. The atomic mass of oxygen is 16.00.
Horizontally write the molecular orbital configuration for O2 2- , O2, and O2 -. Then state the bond order for each. Which of these compounds and ions are paramagentic and which are diamagnetic
An athlete wants to acquire red blood cells from a donor with the same blood type. Taking into consideration that blood is composed of three components, plama, red blood cells, and leukocytes. what instrument have used in our lab experiments that ..
Calculate the standard cell potential at 25 C for the reaction X(s)+2Y+(aq)?X2+(aq)+2Y(s) where ?H? = -651kJ and S = -371J/K.
William places 20 mL of a 2.6 M sulfuric acid solution into a small flask with a few drops of phenolphthalein indicator. He fills a buette with and 1M NaOH. How many mL of the NaOH solution will he use when the solution in the flask just turns pin..
calculate the mass of nitrogen dissolved at room temperature in an 80.0 rm l home aquarium. assume a total pressure of
A lime-soda softening plant treats a flow of 150 MGD, and the water has 86 mg/l CO2. The commercial grade of quicklime has a purity of 85% and the soda ash has a purity of 95%.
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