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A 0.1025 g samle of copper metal is dissolved in 35 ml of concentrated HNO3b to form CU+2, ions and then water is added to make a total volume of d 200.0 ml. How to calculate molarity of CU 2+
What is the molarity of 2500. mL of a solution that contains 160. grams of NH4NO3?
Alpha helices are a type of secondary structure in proteins. What is the length of a 25-kDa single-stranded -helical protein segment. Assume a mean residue mass of 110 Da.
Mg3N2 reacts with H2O to produce Mg(OH)2 and NH3. Determine the rate of change in the amount of Mg3N2 given the rate of change of Mg(OH)2 is 8.50×10-5 mol/s.
Thiobacillus thiooxidans plays an important role in the sulfur cycle in nature. The organism oxidizes inorganic sulfur compounds, and in the process, obtains energy for the synthesis of ATP. The oxidation of sulfite to sulfate:
Calculate the potential that would be measured if the solution pH were 9.70, assuming the selectivity coefficient (Ks) for OH- is 0.1 and that ß is 1.00.
When a piece of metal is irradiated with UV radiation (wavelength = 162 nm), electrons are ejected with a kinetic energy of 5.96*10^-19 J. What is the work function of the metal? (in joules)
A gas sample containing 1.64 mol at 25°C exerts a pressure of 389 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
in the olympics and other major athletic competitions a gc-ms is used to screen athletes for their use of banned
A water sample is measured to have alkalinity of 130 mg/L as CaCO3 at pH=9.2, what are the concentrations of the three carbonate species
Compute the enthalpy change for the dissolution of ammonium nitrate express your answers in units of kJ/mol.
Coca-Cola used to contain 0.060% phosohoric acid by mass. Determine the pH of Coca-Coal prior to carbonation.
Calculate the pH of a solution that is 0.50 M in HF (Ka= 7.2 x 10-4) and 0.60 M in NaF. The answer is 3.22. Please show me how to get the correct answer.
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