How many mL of water to be added to 10 mL of 0.5M solution to make 0.2 M solution?
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Ответ:
All electrons shown on the left dot and cross diagram. You would expect hydrogen sulfide H2S, to have the same bent V shape and a H-S-H bond angle of ~109o, but due to the greater repulsion of the non-bonding pairs of electrons (lone pairs) the actual H-S-H bond angle is reduced to 92o.