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GROUP 2: ALKALINE EARTHS The elements known commonly as alkaline earths have atoms with the (ns) 2 design and almost always have the +2 oxidation state in their compound
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 whic
Q. Define Enthalpy and Calculate the Enthalpy of a system? Ans. Enthalpy is a measure of the total energy content of a system. It is represented by a big H. Change in ent
a solid weak acid i weighed, dissolved in water and diluted to exactly 50ml. 25ml of the solution is taken out and is tittrated to a natural endpoin with .10M NaOH. The titrated po
Basics of Periodic Table.
Environmental pollution caused by oxides and oxyacids f nitrogen and sulphur
Given that ?H°298 for the reaction is -92.2 kJ mol-1, which is larger, the total bond dissociation energy of the reactants or the total bond dissociation energy of the products?
how many forms are there in crystal system
It looks at how the ionic product varies with temperature, and how that ... page, we shall calculate the concentration of hydroxonium ions present in pure water. Kw is called
How do you explain in the absence of aldehyde group in the pentaacetate of D-glucose? Ans) when you react glucose with acetic anhydrate it forms pentaacetate with 5 OH grops it
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