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For a particle in a box system, by what factor do you need to change the box length to decrease the transition energy by a factor 5 for a fixed value of mass?
Suppose a black-body chamber is constructed from 55.8 g (one mole) of iron and heated to 500 K. Classical theory and the observations of Dulong and Petit indicate that the total energy of vibration of iron atoms is 3RT per mole.
water in order to raise the boiling point of the solution by 0.5 C? Assume the ideal van't Hoff factor for NaCl.
A water treatment plant has a flowrate of 6,000 m3/d. Determine the following (assume filtration rate is 60 m3/d-m2): a. Total filter area
A 50ml sample of a white dinner wine required 21.48 ml of .03776 M NaOH to achieve a phenolphthalein end point. Express the acidity of the wine in terms of grams of tartaric acid (150.09g/mol) per 100 ml.
Calculate the molarity of Ba(OH)2 solution if a55.00 mL portion of this solution
a 4.5 g sample of LiCl at 25 C dissolves in 25 mL of water also at 25 C. The final equilibrium temperature of the resulting solution is 60.8 C. What is the enthalpy of solution.
How much heat is required to vaporize 351 g of liquid ethanol at its boiling point.
Explain why a buffer made of equal concentrations of CH3COOH and CH3COO- does not change in pH when a small amount of NaOH (a strong base) is added to the solution. Does the NaOH dissociate into ions when it is added to the solution?
Analyzing a new reaction Consider the following elementary steps that make up the mechanism of a certain reaction: 1.3A>B+C 2. B+2D>C+F A. What is the overall reaction?
If the rate increases by a factor of 10 as the temperature increases from 35 °C to 70°C, what is the activation energy for the reaction?
The maximum temperature attainable in the crucible on strong heating with a Bunsen burner is approximately 800°C. Can the magnesium evaporate under the conditions of this experiment? Why or why not?
Calculate the Gibbs free energy of the separate components, the Gibbs free energy of the mixture and the Gibbs free energy of mixing
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