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IF a black precipitate remaining from the separation of Cr3+ as well as Fe2+ ions from Ni2+ ion is dissolved in HCl and HNO3. A few NH3 is added, followed by several drops of dimethylglyoxime.
(1) Explain a colorless solution results.
(2) Define what might have gone wrong?
Consider the following overall reaction which is experimentally observed to be second order in AB and zero order in C: AB + C ----> A + BC Determine whether the mechanism below is valid for this reaction.
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10^?2 M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are prese..
explain how dissolving the group iv carbonate precipitate with 6m ch3cooh followed by the addition of extra acetic
An empty beaker has a mass of 38.112 g. 10.00 mL of ethyl alcohol are placed in thte beaker and the mass of the beaker with ethanol is found to be 45.268 g
The inversion of compound B is experimentally determined to follow the rate law: d[B]/dt = -k[B]a[H+]b. At 25 °C and a constant pH of 3.00, the reaction proceeds with a constant half-life of 40.0 min. At this same temperature, but at a constant pH..
If 2.5 mol of ethylene oxide is decomposed at 93 degrees celcius what will be the final temperature of the products? The heat capacity of the products is 110.13J/mol C?
0.151 g ofpiperonaldehyde, and 0.80 mL of ethanol, and added 0.10 mL of NaHOsolution (0.60 g/mL), what is the theoretical yield of theresulting chalcone, in grams?
the geometric angle between the two bonds that connect an alpha-carbon to its nearest neighbors on the polypeptide
Calculate the change in enthalpy of HCl + NaOH--> NaCl + H2O for this reaction using Hess's Law. Units should be kJ/mol.
The reaction of CrCl3 with liquid NH3 to give yellow [Cr(NH3)6]Cl3 often has a low yield, since the reaction tends to stop with the production of pink [Cr(NH3)5Cl]Cl2
three student chemists measured 50.0 ml of 1.00 m naoh in seperate styrofoam coffee cups calorimeters. brett added 50.0
Erythro-2,3-dibromo-3-phenylpropanoic acid undergoes eliminiation by an E1 pathway in water solvent (Part A conditions),
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