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Barometric pressure can be understood using the Boltzmann distribution. The potential energy associated with being a given height above the Earth%u2019s surface is mgh. Using this definition of potential energy, determine the ratio for the pressure at height h (Ph) to the pressure at height h = 0 (P0).
A coffee-cup calorimeter contains 140.0 g of water at 25.2 *C. A 122.0 g block of copper metal is heated to 100.4 *C by putting it in a beaker of boiling water.
If the rate constant at 20 degrees CELSIUS IS 4.3(10^-5). How long would it take for 83% of the compound to decompose ? if the rate constant is 9.0(10^-4) at 55 degrees Celsius what will the activation energy be?
how many grams of benzene are needed in 46.3 grams NaBr (103 g/ mol)? the freezing point of solution to 3.94 degree C?
Describe the nature and characteristics of PCB s. Why are they of importance to an EH&S or FS professional who encounters them when.
A piece of metal with a mass of 151 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?
Derive the rate law expression for the chlorination of vinyl chloride based on this mechanism.
What mass of sodium hydrogen carbonate is needed to make the buffer solution 0.10 M in sodium hydrogen carbonate? pH is 10.1 pka is 10.33.
Draw all the resonance structures for the N2O4 molecule. The skeletal structure of the molecule is
Consider the reaction when aqueous solutions of sodium sulfide and manganese(II) sulfate are combined.
During the preparation of a solution, a solute is dissolved in a volume of solvent smaller than the desired volume of solution. Subsequently, solvent is added until the final volume of solution is reached
How many grams of sodium lactate must be added to a 1.00L solution of .400M lactic acid to make a buffer with a pH of 3.7??
What would happen to the solubility of potassium chloride in water as the water temperature increased from 25 degrees celsius to 100 degrees celsius?
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