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Heat Conductivity
When considering the design of houses, the heat conductivity by walls, roofs, and the floor plays an significant role. The heat conductivities (λ) of some building materials are explained in Table 1.
Calculate the heat flow by a wall of 150 m2 (typical of a single-family house in Central Europe) that consists of a brick layer with a thickness of d = 24 cm and by the same wall that consists, though, of a brick layer with a thickness of d = 36 cm. There is a temperature of 25°C inside and 10°C outside.
Halides Transition metals react with halogens at high temperatures to form halides. These reactions have very high activation energies; therefore, high temperatures are requ
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why ionisation energy of Al is greater than Ga?
Q. Briefly explain about Alloys? Ans. Pure metals are malleable. Metals that are harder, stronger and less malleable are sometimes required. These characteristics may be a
find two different substances and how they are produced. Once you have this information, look at their properties and how they are used, and explain how these properties affect th
Delocalisation of electrons in conjugated system is called resonance. For example there is delocalisation of electrons in benzene ,hence we write kekule structure for benzen.
What are ferrites? Ferrites are ceramic compounds having trivalent metal having three valence electrons iron and oxide of divalent element i.e. metals having two free electrons
Chemical reactions of glycerol.
Determine the Coordination number (CN) of HCP In HCP unit cell, the base centered atom touches six corner atoms in the similar plane, three atoms in a plane above and thre
how to find equivalent weight of a molicule
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