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13. Calculating the composition of a buffer of a given pH. a) Kb=5.4*10-4 125mL of 0.90M (CH3)2NH Calculate the mass of (CH3)
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ky- 5.4 8109 pth = -los (5 4X10%) = 3.2676 no . q moles y cate)r n = 125 2x o-rounde 1000 = 0.1125 set x be the no.rules of (в по ме - чао у 11 404 onsult <at 04 пове кос, — ра: -20 4.5 x 16) 3. 3 6 7 5 - о. 65 3) = ре - rka 4 goy CHNO 1 3. 30 : 3.34

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