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A house is air conditioned using solar energy. Solar radiation heats a pressurized tank such that the temperature is maintained at 175oC. 1500 kJ must be extracted from the house to maintain the temperature at 24oC when the ambient temperature is 33oC.
Determine the minimum amount of heat that must be extracted from the tank of water by any device built to accomplish the required cooling of the house
A 2kg piece of copper at 200oC is taken out of a furnace and is allowed to cool in air with an ambient temperature of 25oC. Calculate the entropy change in the universe as a result of this process. The Cp of copper is 0.38 kJ/kg K.
why a small amount of an acid is added while preparing solution of potassium dichromate?
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula
how much glucose C6H12O6 you need to start with to prepare 4.6 times 10 to power 4 Kg of C2H5OH if the yield in the reaction is %64.5 C6H12O6+3O2= 4CO2+C2H5oh+3H2O
#most wanted question..
what reactions take place
How I write chm practice khata
Q. What do you know about Chemical Equilibrium Many chemical changes are reversible and will proceed towards an equilibrium instead of going to completion. The products react w
Q. What is Percent error? Quantities measured throughout an experiment are called experimental values. The dissimilarity between an accepted value and an experimental value is
what are some exempel of perckin relation
Q. Write short notes on priming and foaming. Ans. Priming and foaming: When a boiler produces steam rapidly, some particles of the liquid water are carried along with the s
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