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You now generate a NEW buffer solution by adding 0.1 mL of 10 M HCl to the solution in the previous question, how many mols of Tris-HCl would you now have in the NEW buffer solution?
Based on the Henderson-Hassalbach equation how many mmols of Tris-HCl are there in a 100 mL of a 100 mM Tris-HCl buffer solution at pH 8.1? Note that the 100 mM refers to the sum of Tris and Tris-HCl concentrations.
Select each side of the mass balance equation for an Fe3(PO4)2 solution where the existing species are Fe2 , PO43-, HPO42-, H2PO4-, H3PO4, FeOH?
iron was heated to 275.1 c and placed into 272 g of water at 19.8 c the temperature of the water rose to 25.6 c.
If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, how many half-lives have passed?
A fuel analyzes 74.0 wt % C and 12.0% ash (inert). Air is added to burn the fuel, producing a flue gas of 12.4% CO2, 1.2% CO, 5.7% O2, and 80.7% N2. Calculate the kg of fuel used for 100 kg mol of outlet flue gas and the kg mol of air used.
The equilibrium constant Kc for the formation of ammonia: N2(g) + 3H2(g) -> 2NH3(g), is 3.6 x 10^8 at 25 C. What is the concentration of ammonia, when the equilibrium concentrations [N2] = 5.4 x 10^-3 M, and [H2] = 2.1 x 10^-3
what is the energy difference between the heats of formation you calculated for carbocation A and B?
If the outermost electron in a potassium atom were excited to a 4d-orbital and then fell to the same orbitals, describe qualitatively how the emission spectrum would differ from that of hydrogen (do not do any calculations). Explain your answer.
You need to prepare 100.0 mL of of buffer solution of pH=4.00 using 0.10M benzoic acid (pKa=4.20) and 0.160M sodium benzoate. What is the volume of each solution needed to prepare this buffer?
Why do you sweat? Please use all the thermochemical terminologies( endothermic, exothermic, eat transfer, and whatever else is appropriate)
Which of the following isotopes is more likely to decay via positron emission rather than electron emission.
A ground-state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and a second to return to the ground state.
2.00 L of H2 at a pressure of 368 torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 336 torr after the stopcock is opened.
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