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A buffer system is created by first neutralizing the supernatant solution containing Pb2+, Fe3+, Ca2+, Cu2+, ad K+ ions with 6M NH3 solution, and then adding an equal additional volume of 6M NH3 solution. Explain what forms of NH3 were present in the final solution, their relative concentrations, and how they could function as a buffer.
A 2.067-g sample of a monoprotic acid was dissolved in water. It took 25.24 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
Assuming that the process is working as intended, draw and label the flowchart, do the degree-of-freedom analysis, and estimate the molar flow rate (lb-mole/h) of the humidified outlet air
Write the balanced chemical equation that corresponds to this reaction. B) If 15g cyclohexane is burned in a calorimeter with a heat capacity of 230kJ/K, what temperature change do you expect
The following reaction is investigated (assume an Ideal gas mixture)2N2O(g) + N2H4(g) 3N2(g) + 2H2O(g), Initially there are 0.10 mol of N2O and 0.25 mol of N2H4 in a 10.0-l container, If there are 0.50 mol of N20 at equalibrium, how many moles o..
The products formed in several reactions are given below. Identify the reactions (labeled x and y) and write the complete balanced equation for each reaction
What is the molar concentration of Cl- in solution? What is the molar concentration of Na+ in solution. What is the molar concentration of OH- in solution
What mass of carbon dioxide will be produced when 29.9 g of butane reacts with an excess of oxygen in the following reaction
How many spectra must be averaged in order to increase the signal-to-noise ratio of a spectrum from 7/1 to 20/1? i took 20/7 and squared
Are there certain shapes (tetrahedral, bent, linear) of coordinated covalent bonds that will signal if it is polar or non-polar
When thermal equilibrium is reached, the temperature of the glass and the water is 29.9 "C. What is the specific heat capacity of the glass?
Given the reaction 4Al(s)+302(g)--2Al2O3(S), what is the minimum number of moles of oxygen gas required to produce 1.00 mol of aluminum oxide?
Compound A has a solubility of 18 grams per 100. grams of water at 25*C. Cooling a saturated 200. gram solution of a compound A from 84*C to 25*c results in a precipitation of 22 grams of the compound. Calculate the solubility of compound A at 84 ..
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