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Q. Calculate standard state enthalpy of the substance? Ans. To determine ΔH o f for calcium carbonate, calcium and carbon are burned in a calorimeter. Noti
Why does calcium sulphate form scales in high pressure boilers
notes of chemiluminesence, photophysical process,energy transfer in photochemical reactions
In ion estimation why we have to change the oxidation state of the Fe+3 ion. Ans) Because if iron is in +3 oxidation state it will be morestable then we get preferable product. s
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
In nitromethane N-O bondlength is 1.21A° while normal N-O bondlength is 1.36 A° and for N=O it is 1.18A°..Explain why
The order of reaction is the number of moles whose concentrations verify the rate of a reaction at a given temperature
Uses of Iodoform or tri-iodomethane (a) Iodoform is utilized as a fire extinguisher under the name pyrene. Dense vapours form a protective layer on the burning objects and avoi
Q. Determine Atomic Number and Mass Number? One of the four naturally taking place isotopes of chromium has a mass number of 53. Determine the number of electrons, protons and
Preparation of saturated calomel electrode and determination of standard potentials of electrodes such as Cu 1 Cu, Zn 1 Zn, etc. Comparison of the potential values with values from
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