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How much 5.90 M NaOh must be added to 570.0 mL of a buffer that is 0.0210 M acetic acid and 0.0230 M sodium acetate to raise the pH to 5.75
suppose a can contains gas at a pressure of 755 mm Hg and a temperature of 25 degrees celsius, what would be the pressure if the can was heated to 1155 degrees celsius ?
The temperature inside a balloon is raised from 25.0 degrees C to 250.0 degrees C. If the volume of cold air was 10.0 L, what is the volume of hot air
A process involving a perfect gas is carried out in which the temperature changes at constant volume. First, the process is carried out for a fixed value of ?T and the mass of the gas is doubled. Then, the process is repeated with the same initial..
Which has the larger hydration energy, AL+3 or Li+ (Both ions are about the same size)
A gaseous mixture has a volume of 240L and a pressure of 1.35atm at 24*C. The mixture is 67% He and 33% Kr by mass. What is the mass of Kr
A gas is placed in a storage tank at pressure of 30.0 atm at 20.3 degrees Celsius. As a safety device, there is a small metal plug in the tank made of metal alloy that melts at 125 degrees Celsius.
burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.701 °C. What is the heat capacity (calorimeter constant) of the calorimeter?
Draw the Lewis dot structure of phosgene. Include all 3 resonance forms by alternating the double bond among the 3 terminal atoms. Which resonance structure is best?
Calculate the molarity of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL
A sample of ammonia gas was allowed to come to equilibrium at 400 K.2NH3(g) ↔ N2(g) + 3H2(g) At equilibrium, it was found that the concentration of H2 was 0.0584 M, the concentration of N2 was 0.0195 M, and the concentration of NH3 was 0.430 M.
Tell how infrared spectrometry can be used to differentiate the following compounds. In each case, indicated the signifcant IR bands that will be observed and their approximate wave numbers.
After 20 min, a reactant has decomposed to 85% of its original concentration. What additional information would allow you to solve for k
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