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What are the major species present in 0.250 M solution of each of the following acids? Calculate the pH of each of these solutions.
Sketch the log C - pH diagram for 10-4 M NaHCO3. Use your ENE/MBE to graph to find the pH
How many mL of a 22.5% (v/v) ethanol solution would you need to measure out in order to have 12.5 mL of ethanol? The Molar Mass of ethanol is 46.07g/mol.
How does a decrease in temperature affect the partial pressure of the underlined substances and the value for Keq for each of the following reactions
Determine the number of sulfate ions in 2L of a 0.5M CaSO4 aqueous solution. Then, determine the number of calcium ions dissolved in the same aqueous solution.
A sample of an unknown metal has a mass of 35.4 grams and a volume of 3.11 centimeter cube. calculate the density.
One liter of an acetate buffer is prepared by adding 60mL of 1.5M acetic acid and 50mL of 0.4M sodum acetate. Calculate the final concentrations of acetic acid and acetate
The half-life for a first order reaction at 550 oC is 85 sec. How long it would take for 23% of the reactant to decompose?
A 0.440 g sample of butyric acid (an organic acid consisting of C, H, and O atoms) is combusted in excess oxygen, yielding 0.882 g CO2 and 0.360 g H2O.
The heat energy required to melt 1.00 g of ice at 0 degrees C is 333J. If one ice cube has a mass of 62.0 g, and a tray contains 16 ice cubes, what quantity of energy is required to melt a tray of ice cubes to form liquid water at 0 degrees C
estimate the mean ionic activity coefficient for NaCl in a solution that is 0.020 mol/kg NaCl(aq) and 0.035 mol/kg Ca(NO3)2 (aq)
a solution is prepared by mixing 62.0 ml of 5.00 m hcl and 30.0 ml of 8.00 m hno3. water is then added until the final
This question has two parts: Given that Ka for HF is 6.3 x 10^-4 at 25 degrees C, what is the value of KB for F- at 25 degrees C? and Given that Kb for CH3CH2NH2 is 6.3 x 10^-4 at 25 degrees C, what is the value of Ka for CH3CH2NH3+ at 25 degrees ..
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