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Prepare 25mL 1M sodium acetate-acetic acid buffer solution (both 0.5M). Note: you will be provided with a 5M Acetic acid stock solution and solid sodium acetate with which to make the buffer. Please complete the calculations needed to prepare the buffer Prior to coming to the lab. What are the calculations needed for this.
The bond distance and dipole moment calculated for the highly reactive gas phase OH molecule are 0.98Ao and 1.78D, respectively. Compute the effective charges on the O and H atoms of the OH molecule (in units of the electronic charges).
calculate the minimum number of grams of propane that must be combusted to provide the energy necessary to convert 5.35 of ice at -21.5 to liquid water at 76.0.
Compute the molar concentration of Cl- in the standard KNO3 solution if the flask is rinsed only one time with distilled water.
Calculate the mass of carbon dioxide forms in the combustion reaction of 25 grams of glucose with 40 grams of oxygen?
particular sample of pure iron requires 0.595 kj of energy to raise its temperature from 25oc to 45oc. the specific
Calculate the pH after 10.0, 20.0, 30.0, and 40.0 ml of 0.100M NaOH have been added to 40.0ml of 0.100M HClO.
Light of a wavelength 2000 Angstroms falls on an aluminum surface. In aluminum 4.2 eV are needed to remove an electron. Explain what is the kinetic energy of the fastest emitted photoelectrons
Problem- A student mixes 45.0 mL of 3.32 M Pb(NO3)2(aq) with 20.0 mL of 0.00245 M Na2C2O4(aq). How many moles of PbC2O4(s) precipitate from the resulting solution. What are the values of [Pb2 ], [C2O42-], [NO3-], and [Na ] after the solution has r..
The river has an ultimate CBOD of 10 mg/L as well as is flowing at a rate of 8 m3/s. Presumptuous a reaction-rate coefficient of 0.1/day, compute the ultimate and 5-day CBOD of the waste at the point of discharge (0 km) and 20 km downstream. The r..
Suppose a 10 mL sample of solution is to be tested for Cl- by adding .2 mL of .15 M AgNO3. What is the minimum number of grams of Cl- that must be present in order for AgCl(s) to form
A technician plates a bowl with about 4.6 grams of chromium from an aqueous chromium (III) sulfate. What current is needed to plate this amount of chromium in 3.5 hours.
Write the chemical equation for the ionization of each of the following weak acids in water. (Some are polyprotic acids; for these write only the equation for the first step in the ionization.
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