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Rate constants for the decomposition of acetaldehyde were measured at five different temperatures. A plot of ln k versus 1/t gave a slope of -2.09*10^4 K. What is the activation Energy for this reaction?
What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous formic acid requires
the wavelegnth corresponding to maxium in the Plank distribution at the temperature T, and deduce the expression for the constant as a multiple of the second radiation constant
how many moles of H30 or 0H must you add to a liter of a solution of a weak acid to change its pH from 3.25 to 3.65
Assuming that the deformation is completely elastic, compute the amount of stress that is put on the nickel 200 alloy. Use values of Yield Stress, Ultimate Tensile Strength, Coefficient of Thermal Expansion and E for nickel 200 alloy.
Determine how many milliliters of this solution should you dilute to make 100.0mL of 0.250M Ammonia(NH3)?
An aqueous solution is made by dissolving 25.8 grams of magnesium nitrate in 395 grams of water. What is the molality of magnesium nitrate.
A 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and the temperature of the water decreases to 0 degrees celsius. How many grams of water were in the sample?
Calculate the grams of solute needed to prepare each of the following solutions. Express the answer using 2 sig figures.
The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g°C) and the heat capacity of the empty calorimeter is 0.10 kJ/°C. How much heat is released per gram of oil shale when it is burned?
What percentage of tablets contain contain more than the standard amount of 250 mg acetaminophen per tablet? The mean value is 244.53mg and the standard deviation value is 11.88
Benkart's Tie Store has fixed costs of $180,000. Tires sell for $75 each and have a unit variable cost of $30. What is Benkart's break-even point in units?
Describe the mechanism of the preparation of 2-methyl-3-hexanol by reducing an appropriate carbonyl compound.
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