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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.
Q. Explain about Neutral and Amphoteric oxides? Neutral oxides have neither acidic nor basic properties and when dissolved in water, they give neutral solutions, e.g., CO, N
Q. Briefly Describe Problems and Applications of Radioactivity? Ans. All radiation, electromagnetic as well as the kind from nuclear decay, takes its toll on living organi
The difference among Threshold energy and average energy of the molecules is known as activation energy.
Chemical formula of benedict solution is Feso 4 .7H 2 o
By who can sublimation be useful? How can it be useful?
Sphere packing Element structures where chemical bonding is nondirectional are best explained by considering the packing of equal spheres. Close-packed structures are on
the atomic number of element represents
what is the name given to the impure copper obtained through this process
How coloured ion is formed
Why do zinc hydroxide, aluminium hydroxide and lead (II) hydroxide dissolve in excess aqueous sodium hydroxide?
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