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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.
When active metals such as sodium are exposed to air, they quickly form a coating of metal oxide. The balanced equation for the reaction of sodium metal with oxygen gas is
110 micro mol of 206^Pb. Assuming that all the 206^Pb comes from decay of the 238^U, estimate the rocks age (in yr).
Although glucose is a more complicated molecule than CO2 and H2O, there is enough entropy in the O2 products to make the reaction generate entropy overall.
At a certain temperature 0.860 mol of SO3 is placed in a 2.00-L container. At equilibrium, 0.100 mol of O2 is present. Calculate Kc.
Consider a particle of mass, m, moving in a one dimensional system between x=a and x=b. Its potential energy is (1+(hbars)^2)/(mx^2). calculate the average value of x and x^2 for the particle in this system
Using the average initial pH of your acetic acid solutions, and the average molarity of those solutions, calculate a value of Ka for acetic acid. when initial pH is 2.63 and average molarity is 0.06475.
10 g of potassium chlorate, KClO3 is decomposed producing 3.915576 g of oxygen gas and 6.083363 g of potassium chloride, KCl: 2KClO3 + heat -> 2KCl + 3O2. Based on this information, what is the GMW of the oxygen produce
calculate how much more quickly 235 ^UF6 effuses than 238 ^UF6. give the answers as the ration of rates of 235 ^UF6 to 238 ^UF6 to four decimal places.
2I2 + N2H4 4HI + N2 a.How many grams of I2 are needed to react with 36.7 g of N2H4?
What is the lead ion concentration in a saturated lead(II)chloride solution made by adding solid PbCl2
A 8.45-L container holds a mixture of two gases at 33 °C. The partial pressures of gas A and gas B, respectively, are 0.415atm and 0.606 atm. If 0.190 mol of a third gas is added with no change in volume or temperature, explain what will the total..
An optically active D-aldopentose produced on optically inactive alditol upon treatment with NaBH4. When this aldopentose was subjected to a Ruff degradation, a D-aldotetrose was generated.
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