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Compute the pH of a solution of 30.0mL of 0.0580 m malonic acid (H2C3H3O4) while it is titrated to the second equivalence point with 0.100 M KOH. (For H2C3H2O4 Ka1: 1.5*10^-3 and Ka2:2.0*10^-6)
At 50 degree's Celsius the vapor pressure for methanol and ethanol are 406 and 222 torr, respectively. Given a mixture at 50 degree's Celsius that contains 0.2 mol of methanol and 0.1 mol of ethanol, compute the partial pressures of each liquid an..
titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs.
A 0.50g sample of vegetable oil is placed in a caloriemeter. When the sample is burned 18.9kj are burned off. What is the caloric value in kcal/g of the oil? I am not sure how to set this problem up. Please help
To the nearest hundredths of a gram, determine the gram molecular mass of caffeine. A "Big Gulp" of Mountain Dew contains 128 mg of caffeine per 830 mL of solution. The molecular formula of caffeine is C8 H10 N4 O2.
what fraction of this side chain is positively charged and what fraction is neutral at pH 7.2?
A gas occupies 22.4 L at STP and 14.5 L at 100°C and 2.00 atm pressure. How many moles of gas did the system gain or lose?
Write the Bronsted-Lowry chemical equation describing how HC4H7O2 behaves when add to water
The density of germanium is 5.325 g/cm^3 . If you made a 4 nm quantum dot of germanium, how many atoms would it contain? Assume the dot is spherical.
Calculate the number of grams of carbon monoxide produced from the detonation of 200.0g of TNT (C7H5N3O6) given the following reaction
What was the initial concentration of COCl2?
Some atomic properties depend on the average value of 1/r rather than the average value of r itself. Evaluate the expectation value of 1/r for a hydrogenic helium 1s orbital.
Chemistry Questions on Calculate P H
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