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Using the Ka for formic acid, calculate the pH at the equivalence point D. for the titration described in the other question above.
Assume that the density of the H+ solution is 1.00 g/ml and that its specific heat capacity equals that of water. The initial and final temperatures are 22.0 C and 65.8 C. Calculate the ΔH of the reaction per mole of magnesium.
If a 1.22 g piece of gold is hammered into a sheet whose area is 32.4 ft2, what is the average thickness of the sheet? (The density of gold is 19.32 g cm-3.)
A solution is made by dissolving 21.5 grams of glucose (C6H12O6) in 255 grams of water. What is the freezing-point depression of the solvent if the freezing point constant is -1.86 °C/m?
The endpoint in the titration is "overshot" A. is the reported molar concentration of the hydrochloric acid solution too high or too low. B. As a result of this poor titration technique, is the reported number of moles of B4O5(OH)4^2 would be too ..
Calculate the maximum non-expansion work per mole that may be obtained from a fuel cell in which the chemical reaction is the combustion of propane at 298K
How many moles of nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature (\rm 25^{\circ}C)? Assume ideal behavior.
A student doing this experiment obtained a value of 110% for the recovery if copper. What is the possible explanation for this anomalous result
Assuming 100% dissociation, calculate the freezing point and boiling point of 3.27 m AgNO3(aq). Constants may be found here.
Using standard enthalpies of formation, calculate the standard enthalpies of the following reaction: 4HCl(g)+O2(g) -------> 2Cl2(g) + 2H2O(g)
A 6.5g sample of diprotic acid requires 137.5mL of a .75M NaOH solution for complete neutralization. Determine the molar mass of the acid.
A 8.90g sample of lead nitrate was heated in an open container to cause decomposition. Calculate the theoretical yield of PbO in grams.
The Lyman series in the hydrogen atom corresponds to transitions that originate from the n=1 level in absorption or that terminate in the n=1 level for emission. Calculate the energy, frequency, and wavelength of the least and most energetic transiti..
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