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The vapour pressure of a substance at 20.0 o C is 38.1 kPa and its enthalpy of vaporisation is 49.6 kJ mol -1 . Estimate the temperature at which its vapour pressure is 80.0 k
A train moving with a velocity of 51 m/s east undergoes an acceleration of -2.3 m/s 2 as it approaches a town. What is the velocity of the train 5.2 s after it has begun to decele
How is glass fibre material in optical fibres used? Glass fibre material in optical fibres: Silica is the generally used materials for the manufacture of a glass fibre. The
Energy: The term energy may be defined as the capacity for doing work. There are two forms of energy: potential energy and kinetic energy. POTENTIAL ENERGY Potential e
Two stable isotopes of lithium and have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.
why specific heat is different at different temperature?
What is the Principal value branch of i i Ans) Principal value branch of ii=e-π/2
Who are the best fiber optics manufacture? To single out a company would be grossly unfair since in such business the players are, usually, respected industrial corporations wi
Q. State Maxwell's right hand cork screw rule. Maxwells's right hand cork screw rule: If a right handed cork screw is turn to advance along the direction of the curren
a) Explain what is meant by the term "Heat Energy" b) An Aluminium bar 0.5m long, initially at 20° C is heated until its temperature rises by 50 0 C. Determine the change in l
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