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The activation energy for a reaction is 84.0kJ/mol. Addition of a catalyst lowers the activation energy by 15.0 kJ/mol. By what factor (k catalyzed/ k uncatalyzed) does the rate increase at 25 °C?
Separate samples of an aqueous solution of an unknown ionic salt are treated with dilute aqueous solutions of hydrochloric acid, sulfuric acid, and potassium hydroxide. Precipitates are formed in all three cases.
Methyl salicylate, C8H8O3, the adorous constituent of oil of wintergreen, has a vapor pressure of 1.00 torr at 54.3 degrees celsius and 10.0 torr at 95.3 degrees celcius. What is it's vapor pressure at 25 degrees celcius?
A sample of 6.022 g of CH4 is enclosed in a 12 L container at 402 K. What is its pressure in atmospheres
How many moles of I2 were used in the titration? How many moles of SO2 were in the 5.00 mL sample of wine? Determine the mass of SO2 (in mg) in the 5.00 mL sample of wine. Determine the concentration of SO2 (in mg/L) in the wine.
what mass of ammonium chloride can be added to 100 grams of water at 20 degrees C before the solution becomes saturated
calculating the pH of the final solution at equivalance point. Please show a step-by-step process
Order of a reaction, Consider a kinetic study of oxidation of a new plastic stabiliser being proposed for the automobile industry. Stabiliser + H+ + O2 ----> Byproduct
Suppose that you were to fill a 1L beaker with only 200 mL of water and it is not deep enough to make the water level inside and outside the graduated cylinder the same.
The blue color of the sky is due to the scattering of sunlight by the molecules in the air. The blue light has a frequency of about 7.5 x 10^14 Hz.
If given Cu(OH)2=CuO + ? and separately CuO + HCl= CuCl2 + ? What are the finished equations?
explain how the leaving group leaves and the nucleophile attacks the carbon? What is an example explanation and what do I include in the explanation?
A rectangular block has dimensions 2.9 cm 4.0 cm 10.0 cm. The mass of the block is 625.0 g. What is the volume of the block?
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