Question

help me with 3 and 4 please

3. In Exp. 2, you mixed nine kinds of known solutions with un known aqueous solution in order to identify what un known aqueous solution is. This kind of analysis for the identification of solution in water chemistry is called (Quant aktive Analysis. (2pt) For question 4 - 5 of Exp. 4, 4. Calculate the followings. (6pts) a) The empirical formula for a compound, copper sulfide Cu.sy Mcompound = 0.4907 g mcopper = 0.3923 g (Aw=63.55 g/mol) msulfur = 0.0984 g (Ax= 32.06 g/mol) 0.393= 63.55 cues 0.005989 moles whs 0.0969 0.003069 mues 0.490

Answer 1

of known solution in orden I. In exp. 2, you mixed nine kinds solutions with an unknown aqueous to identify what the unknown aqueous kind of analyses for the identification water chemistry is called clualitative solution is. This of solution in analysis Ary s Qualitative m compound = 0.49079 in copper = 0.3923g. пери = Meppen 0.39239 = 63.55 g/mol 6.173 x 103 mol m sulfur = 0.0984 g. sulfur = 0.09849 - 3.078 10 mol. 32.06 g/mol copper: nsulfus = 6.173x103 : 3.078103 Hence empirical formula of compound is cus. as in and s are present in 2:1