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Sketch a qualitatively accurate graph of the entropy of a substance (perhaps H2 O) as a function of temperature, at fixed pressure. Indicate where the substance is solid, liquid, and gas. Explain each feature of the graph briefly.
Problem- The average molecular velocity in a gas sample at 300 K is 500 m/s. The temperature of this gas is increased until the average velocity or its molecule os 1000 m/s. What is the new temperature
Consider the reaction: 2 A + B + 2452 J --- 2C at 25 celcius. The entropy change dor the reaction is 10.0 J/k. At what temperature would you expect it to be spontaneous
Can someone do the mechanism for the two step reaction where a benzyl gets converted to a meso-hydrobenzoin (regent for first step NaBH4 and water reagent for the second step). Explain the water is a proton source to hydrolyze the borate ester
a solution is made by mixing 9.00 mmol of a weak acid and 3.00 mmol of the strong base. what is the resulting ph? more
A compound gave an orange precipitate when reacted with 2,4 -DNP and showed a strong absorbance. The Tollens test shows a negative result
What mass of NaOH (s) must be added to 1.0 L of 0.050 M NH3 to ensure that the percent ionization of NH3 is no greater than 0.0010%? Assume no volume change on addition of NaOH. Kb NH3=1.8 x10^-5
its clay concentration and the CEC of the clay be able to estimate the draction of CEC due to organic matter in the sample
What mass (in grams) of solid KCl would need to be added to 500 grams of water to make an ideal solution with a boiling point of 106.8
What is the lead concentration of a saturated solution of lead(II) sulfate containing 0.010 molar Na2SO4
An electrochemical cell has an Eocell of 1.70 V and transfers 2 moles of electrons. The Faraday constant is 96,485 C/mol e-. What is the value of delta G
Question- Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Use tabulated thermodynamic data as needed to calculate? Hf° for the reaction product in the equation shown below if? H° for the reaction is -41.00 kJ.
The vessel is evacuated and filled with an unknown gas at the same pressure and temperature. In this case, only 1.96g of the unknown gas effuse out in one minute. Calculate the molar mass of the unknown gas.
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