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The wall of a spherical tank of 1-m diameter contains an exothermic chemical reaction and is at 200oC when the ambient air temperature is 25oC. What thickness of urethane foam is required to reduce the exterior temperature to 40oC, assuming the convection coefficient is 20 W/m2K for both situations? What is the percentage reduction in heat rate achieved by using the insulation?
if a 1.223 g sample of aluminum metal is heated in a chlorine gas atmosphere the mass of aluminum chloride produced is
The normal boiling point of chloroform is 61.70 degrees Celsius and Kbp for chloroform is +3.63 degrees Celsius/m.
Celsius the initial concentration of the three gases are.3M H 2 S,.3H 2 and .150 S 2 you just need to determine the equilibrium concentrations of all these given 3 gases?
If the heated copper is then placed into the water in the insulated container, given that the specific heat of copper is 0.385J/(gC), calculate the maximum temperature of the water after the copper metal is added.
In a graph pH vs volume of NAOH(ml). Shows an equivalence point of 7.00. This graph is? 1.strong acid weak base? 2. Weak base and weak acid? 3. strong acid and strong base? 4 weak acid strong base
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide via the reaction:CaCO3(s)----> CaO(s) + CO2(g)
the specific heat of lead is 0.03 cals/J* degree C. If all the heat given up by the lead is used to melt the ice, how much ice is melted when the temperature drops to 0 degrees Celsius?
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first ..
Aluminum metal is made industrially by electrolysis of Al2O3 dissolved in molten Na3AlF6. How many grams of Al metal are produced when 8.80 X 103 coulombs pass through the cell?
How much faster do ammonia (NH3) molecules effuse than carbon monoxide (CO) molecules? Enter the ratio of the rates of effusion.
The equivalence point was reached by adding 11.62 ml of NaOH from the buret. What is the molar mass of this unknown acid
In addition to a-ketoglutarate, what other compound is produced in the transamination reaction in which oxaloacetate and glutamate react
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