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During a flame test why is calcium''s flame not persistent, while that of strontium is?
Ans) Because it does not have many ions as compared to the Strontium. It is the ions which produce color.
Trace and ultratrace analysis: The accuracy, precision and detection limits of flame AAS depend on how the analyte sample is introduced into the atomiser. We need to transfer
how do you prepare 100mM pH 7.4 of Potassium phospate buffer
Polyglycolic acid (PGA) : It is acquired by the chain polymerisation of cyclic dimer of glycolic acid, OH-CH2-COOH.
Q. Transition elements of the f-block? The salient features of the chemistry of the transition elements of the f-block. Due to filling of electrons in the f-orbitals of an inne
Calculate the expected enthalpy of hydrogenation of a six-membered ring with three double bonds and compare it with the value obtained in 74.1. What is the reason for this diffe
Q. Scientific Notation and Dimensional Analysis? Very small and extremely large numbers can be compared more easily when they are converted into a form called scientific notati
Which of the following set of quantum numbers is correct for the 19th electron of chromium: n l m s (a) 3 0
what is molality?
what mass of oxygen gas exerts a pressure of 475 mm Hg in a volume of 1.25L at a temperature of -22C
Q. Definition of Avogadros Hypothesis? Ans. Equal volumes of different gases at the same temperature and pressure contain the same number of molecules. At a given temperatu
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