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Q. Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt
A single covalent bond is build when two atoms share a pair of electrons. Triple and double bonds can be formed when two or three such pairs are shared. A Lewis structure is a repr
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?
This among the following elements has the tendency to form covalent compounds: (1) Ba (2) Be
Which of the following compounds are covalent: (1) H 2 (2) CaO (3) KCL
characterstics of s block element
The maximum number of electrons that can be accommodated in the M th shell is: (1) 2 (2) 8 (3) 18 (4) 32 Ans: 18
Q. How to calculate Percent Yield? Ans. When you make cookies the recipe may claim to make a certain number of them, but usually in the end there are less. There might be
Q. Mention the role of insoluble fibres from wheat bran? The insoluble fibres from the wheat bran are resistant to fermentation by colonic bacteria and increase fecal bulk by r
Why is the total energy of a many-electron atom not equivalent to the sum of the orbital energies for every electron?
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