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A certain superinsulation material having a thermal conductivity of 2 x 10^-4 W/m C is used to insulate a tank of liquid nitrogen that is maintained at -196 degrees celsius; 199 kJ is required to vaporize each kilogram mass of nitrogen at this temperature. Assuming that the tank is a sphere having an inner diameter of 0.52 m, estimate the amount of nitrogen vaporized per day for an insulation thickness of 2.5 cm and an ambient temperature of 21 degrees celsius. Assume that the outer temperature of the insulation is 21 degrees celsius.
How is acetyl chloride produced? If 915 gallons is produced and shipped, will DOT require the carrier to display the flammable placard? Explain your answer.
A concentration cell consists of two Ni / Ni2+ electrodes. The electrolyte in half-cell A is 0.50 M and the electrolyte in half-cell B is 0.0025 M. Which combination below correctly pairs the anode and the cell voltage
How do I show all steps and their respective manipulations to obtain the correct equation and determine the ΔH in kJ for the reaction of 2 Mg (s) + O2 (g) ----> 2MgO (s)
Solid Ba(MNO4)2 is in equilibrium in a solution of KMNO4. What concentration of KMNO4 is needed to establish a concentration of 2.0 x 10-8 for the Ba 2+ ion in solution?
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries.
The concentration of NaCl in solution is 0.25 M. What volume of solution contains 5.0 g NaCl.
How much heat is evolved when 243 g of ammonia gas condenses to a liquid at its boiling point?
If 15 grams of copper(2) chloride react with 20grams of sodium nitrate, how much sodium chloride can be formed
A football is inflated to a pressure of 1.00 x 10^3 torr in a room at 25 degrees C. If the game is played at 10 degrees C, what will the pressure in the ball be, neglecting any volume change in the ball and assuming that it doesn't leak?
A system receives 729 J of heat and delivers 4,104 J of work to its surroundings. What is the change in internal energy of the system (in J)
The vapor pressure of liquid Ni is 0.100 torr at 1606 degrees C and 1.00 torr at 1805 degrees C. The molar heat of fusion of Ni is 3.25 kcal/mol. Determine the vapor pressure of solid Ni at 1200 degrees C.
what volume of ethylene glycol a nonelectrolyte must be added to 15.0 liters of water to produce an antifreeze solution
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