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For the elementary process below, the activation energy is 27 kJ/mol and the enthalpy change is -20 kJ/mol. What is Ea for the reverse process, in kJ/mol?
A + B --> AB
The best Lewis structure for sulfuric acid has zero formal charges, sulfur as the central atom, and no bonds between S and H. How many single and double bonds, respectively, are there in this Lewis structure
Calculate the mass fractions of the components in the mixture and the average molecular weight of the gas mix. b)The gases are mixed with 20% excess air and completely combusted with 100% conversion
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
you observed that a high dilution of a young culture was plated on a medium known to support its growth, but after 48 hours of incubation, the plate showed no growth. Give two possible explanations for these results.
A 455-g piece of copper tubing is heated to 89.5 Celcius and placed in an insulated vessel containing 159g of water at 22.8 degrees Celcius. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temerature? (c..
Determine whether each of the following causes an increase or decrease in the activity of the electron transport chain. large difference in H+ concentration across the inner mitochondrial membrane
degress C in boling water and then dropped the hot coins into 43.0 g of water at a temperature of 15.5 C in a coffee cup calorimeter. The final temperature of the water and the coins was 21.5 C.
Pressure is measured and is 28.476861 atm at 297.15 K. The vapor pressure of the water is 0.02947 atm at 297.15 K. How many grams of each product are formed and with how many grams of C7H14 did you start with
Predict the normal boiling point of pure B (in degrees Celcius) given that deltaHvaporization(Pure B)=67.9kJ/mol.
An aerosol can has a gas pressure of 144 kPa at 293 K. Calculate the pressure when the can is heated to 425 K.
what is the osmolarity of a solution that has a concentration of NaCl of 0.300 mol/L?
Hydrogen gas was collected over water in a eudiometer at 26 oC when the atmospheric pressure was 756 mm Hg. What was the pressure of the hydrogen gas?
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