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Problem- For 460.0mL of a buffer solution that is 0.130M in HC2H3O2 and 0.120M in NaC2H3O2, calculate the initial pH and the final pH after adding 0.010mol of HCl.
Please provide the answer of the given question on urgent basis
A sealed-end water manometer attached to an air duct reads 1598 cm. An open-end water manometer attached to the same duct reads 556.2 cm.
what is the pressure in atm inside a container of gas connected to a mercury filled open-end manometer when the level
Question- Hydrogen iodide decomposes slowly to H2 and I2at 600 K. The reaction is second order in HI and the rate constant is 9.7×10?6M?1s?1 A) What is the half-life (in days) of this reaction when the initial HIconcentration is 0.120M?
During a strenous workout, an athlete generates 1890.0 kj of heat energy. What mass of water would have to evaporate from the athlete's skin to dissipate this much heat?
The water bath conatins 2.90 kg of water at 27.6 degrees celcuis. During the reaction 110 kj of heat flows out of the flask into the bath. Calculate the new temperature of the water bath
You are given an unknown (solid or solution) and told that it can be one of the other of the compounds in the pairs listed below. Describe a simple chemical test (Not a flame test) using only reagents from our chemistry kits that would enable you ..
pure benzene has a normal freezing point of 5.5degc. a solution containing 11.4g of a molecular substance dissolved in
In a separate experiment, it was found that for equal concentrations of element X as well as the standard the response for element X was 0.930 times intense as the standard. Explain what is the concentration of element X in the unknown expressed a..
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq). The ionization constant for HClO can be found here.
Question- A gas at a temperature of 85 degrees C occupies a volume of 175 mL. Assuming constant pressure, determine the volume at 15 degrees C.
One way to analyze sulfur is by comustion of the sample, which produces SO2 and SO3 that can be bubbled through H2O2 to produce H2SO4. The H2SO4 is then titrated against NaOH in the reaction H2SO4 + 2NaOH ? Na2SO4 + 2H2O.
Question- The flask shown here contains 0.276 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.200 M NaOH
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