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Describe how to prepare a 500.00mL of a pH 10.00, 1.00M carbonate buffer using the following reagents: NaHCO3 (FM 84.007 g/mol), 6.0M HCl and 6.0M NaOH (H2CO3 Ka1 = 4.46x10 -7. Ka2 = 4.69x10 -11)
Calculate the molar concentration of OH - ions in an 1.18 M solution of a weak base, hydrazine, N2H4. (Kb = 4.0 10-6). What is the pH of this solution
A researcher added 2.06g of the salt sodium nitrate, NaN0subscript 3, to a cylinder containing water. The cylinder diameter is 2 inches and the depth of the water in the cylinder is 4 inches. Determone the concentration of salt in the solution
a. finance is a very challenging and rewarding field. it is exciting area because financial managers are given the
Briefly explain why hydrogen atoms in methane are all in equivalent positions? B. Briefly explain why there are no structural isomers of propane (c3h8)
a s2- ion-selective electrode gave an electrodepotential of e -0.254 v when immersed in a 7.76 10-2 m standard k2s
How many atoms of each element are present in one molecule of the following compounds?
Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid, 0.5 L of 1.0 M sodium acetate and then adding 8 g of solid NaOH (MW = 40.0 g/mol)
The emitted wavelengths of an element can be related to the frequency and energy of emission. The emissions from the hydrogen atom were modeled using the Rydberg equation, which Niels Bohr used to develop the Bohr model of the atom.
the concentration of carbon monoxide in a sample of air is 9.2 ppm. there are how many molecules of CO are in 1 liter of 755 torr and 23 degrees celcius
q1. given that the internal energy of water at 55 bar pressure is 1178 kj kg-1 and that the specific volume of water at
Compaire soltuions 2 and 4. how does the common-ion effect influence the ph of solution 4? explain fully, and calculate the expected ph of each of these soltuions.
Calculate the molar mass of the unknown. Assume that the molal freezing point depression constant of water is 1.86C kg/mol and that the freezing point of water is 0.00C.
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