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A solution of acetic acid, HC2H3O2, on a laboratory shelf was of undetermined concentration. If the pH of the solution was found to be 2.39, what was the original concentration of the acetic acid? ___M
the pH of a saturated solution of a metal hydroxide MOH is 9.68. calculate the Ksp for the compound
what radial position is the velocity of an individual fluid element equal to the average velocity of the fluid? (r= r subscript c and 0
Ethyl acetate can be prepared from ethanol as the only organic starting material.
Which proton(s) in 1-phenylethanol corresponds to the tall singlet at about 7.40 ppm in the 1H NMR?
How many moles of CO(NH2)2 are present in 145 g of water, if the freezing point of the solu- tion is -4.02?C? kf (water) = 1.86 K · kg/mol.
what is simple experiment can be performed to confirm that baking soda changes
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co
The standard cell potential (Ecell) of the zinc-air battery is 1.65V. If at 25 degrees celcius the partial pressure of oxygen in the iar diffusing through its cathode is 0.22atm, what is the cell potential (Ecell)? Assume the cell reaction is:
57.0 mL of 3.50 M sodium hydroxide is combined with 35.0 mL of 1.80 M magnesium chloride. What mass in grams of solid forms?
The value of Kf for cyclohexane is 20.0°C/m, and its normal freezing point is 6.6°C. A mass of 1.604 g of a waxy solid dissolved in 10.000 g of cyclohexane results in a freezing point of 4.4°C. Calculate the molar mass of the solid.
Using standard enthalpies of formation from Appendix 2A, calculate the standard reaction enthalpy for the following reaction, the final step in the production of nitric acid
What volume of solution should be dispensed from the buret to provide 5.633 mmol CO2-3 ? Answer in units of mL.
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