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The Ca2+ and Mg2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.
fuul explaination
Lattice energy of an ionic compound depends upon: (1) Charge on the ion only (2) Size of the ion only (3) Packing of ions only (4) Charge on the ion and size of the io
the standard EMF of cell Pt/H2
positive standard electrode potential and negetive standard electrod potential
give an example of a compound whose empirical formula & molecular formula are same.
The electronic configuration of calcium ion ( Ca2 + ) is: (1) 1s 1 , 2s 2, 2p 6 , 3s 2 , 3p 6 , 4s 2 (2) 1s 1 , 2s 2 , sp 6 , 3s 2 , 3p 6 , 4s 1
The Bohr orbit radius for the hydrogen atom (n=1) is approximately 0.530 Å . The radius for the first excited state (n=2) orbit is: (1) 0.13Å
nuclear quadruple resonace
100 ch3-ch2-choh-ch2-ch2cl
A 100 gal tank contains 10 lb of water. The tank is filled by two inlet streams, one of pure water and one of pure ethanol. The flow rate of both streams is 10 gal/min. Calculate t
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