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If the rate of a reaction increases by a factor of 8.2 when the temperature is increased from 27.1oC to 51.9oC, what is the activation energy for this reaction in kJ/mol?
What ratio [CH3NH3+]/[CH3NH2] is needed to prepare a buffer solution with a pH of 8.60 from methylamine, CH3NH2, and methylammonium chloride, CH3NH3Cl? Kb of CH3NH2 = 3.7 10-4.
methyl trifluoroacetate is more reactive than methyl acetate, in nucleophilic acyl substitution reactions. Explain.
How could you isolate the R-(+)-alpha-phenylethylamine from the mother liquor that remained after you crystallized and filtered off the S-(-)-alpha-phenylethylamine
A 3.18 L sample of hydrogen chloride (HCl) gas at 1.64 atm and 31 degrees C is completely disolved in 710 mL of water to form hydrochloric acid solution. Calculate the molarity of the solution. Assume no change in volume
The half-life for the reaction at 550 C is 81.3 seconds. How long does it take for 78.5% of a phosphine sample to decompose?
In the reaction below, 6.15 atm each of H2 and I2 were placed into a 1.00 L flask and allowed to react: H2(g) + I2(g) 2 HI(g) Given that Kc = 45.5, calculate the equilibrium pressure of H2.
Gold has a face-centered cubic structure and has a density of 19.3 g/cm3. What is its atomic radius
Why, in a primitive cubic cell, do anions sit on the lattice points while the cation fills the lattice hole in the center a. Because it is favorable for anions to be as close to one another as possible.
If 27.0 mL of 0.0200 M KMnO4 were required to titrate a 0.425 g sample of K3[Fe(C2O4)3] * 3H2O, what is the % purity of the complex
Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess
how many grams of carbon dioxide can form when a mixture of 6.00 g ethylene c2h4 and 2.50 g of oxygen is ignited
A hydrogen-filled balloon was ignited and 1.50 gram of hydrogen reacted with 12.0 g of oxygen. How many grams of water vapor were formed?
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