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Explain what initially forms as pale blue as well as pale precipitates when aqueous ammonia is added to [Cu(NH3)4]+2(aq) and [Ni(NH3)6]+2(aq) respectively?
A growth factor for cells was identified from extracts of rat brain. Preliminary characterization was done on this activity using several methods.
Need to prepare a solution of 0.2 L 0.4 M then determine how many cm^3 of a solution of H2SO4 (sulfuric acid) 80.0%
In a liquid-liquid extraction with water with ethyl acetate, which phase would expect every compound below to be dissolved in
The pH of a 0.40 M HF(aq) solution is 1.93. Calculate the change in pH when 0.356 g of sodium fluoride is added to 50.0 mL of the solution. Ignore any change in volume.
What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions?
the volume of a sample of oxygen gas collected over water is 258 mL at 27 degrees C and 620.0 torr. Calculate the volume in milliliters of dry oxygen gas at STP. (the vapor pressure of water at 27 degrees C is 26.7 torr.)
the following reaction is carried out in a bomb calorimeter 4nh3 g 5o2 g--gt4no g6h2o gthe calorimeter constant is
A 4.30 g nugget of pure gold absorbed 293 J of heat. The initial temperature was 29.0°C. What was the final temperature?
Depict a stepwise detailed mechanism for the subsequent reaction. Utilize curved arrows to show the movement of electrons. CH3CH2CH2CH2NH2 + 3CH3I ---K2C02---> CH3CH2CH2CH2N+(CH3)3 + 3I-
A proton in a magnetic field has two spin states
Equal volumes of 0.316 M aqueous solutions of nitrous acid and sodium acetate are mixed. What is the nitrite ion concentration once equilibrium is established
What is the purpose of washing the alkyl halide with aqueous sodium bicarbonate (NaHCO3)? Write the reactions that are expected to occur when the sodium bicarbonate is added to the test tube. Why is it important to add the sodium bicarbonate slowl..
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