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The reaction between ethyl iodide and hydroxide ion in ethanol (c2H5OH) solution, C2H5I(alc) + OH -(alc) C2H5OH(l) + I -(alc) has an activation energy of 86.8 kj/mol and a frequency factor of 2.1*10^11 A solution of KOH in ethanol is made up by dissolving 0.319 gKOH in ethanol to form 300.0mL of solution. Similarly, 1.552g of C2H5I is dissolved in ethanol to form 300.0mL of solution. Equal volumes of the two solutions are mixed. Assuming the reaction is first order in each reactant, what is the initial rate at 45C?
As the liquid vaporizes the plunger is pushed out. At equilibrium, the plunger reads 5.46 mL of gas. Atmospheric pressure is 740. mmHg. What is the approximate molar mass of the compound (in g/mol)?
Suppose a volume is divided into three equal parts. How many microstates exist for distributing four molecules among the three parts?
What was the wavelength of the second photon emitted?
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 82% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9*10-12.]
What are the equilibrium partial pressures of CO and CO2 if CO is the only gas present initially, at a partial pressure of 0.988 atm?
acetic acid has a Ka of 1.8x10^-5. what is the pH of a buffer solution containing .15 M CH3COOH(acetic acid) and .15 M CH3COO^-?
You need 70.2 J to raise the temperature of 34.0 g of ammonia from 23°C to 24°C. Calculate the heat capacity of ammonia.
Grignard reagents (RMgX) are extremely strong bases and nucleophiles. Comlete the following reactions which demonstrate these two properties.
A mixture of Na_2CO_3 and NaHCO_3 has a mass of 81.5 . It is dissolved in 1.00 of water and the pH is found to be 9.92. Find the mass of NaHCO_3 in the mixture?
Draw the organic product formed when the structure shown below undergoes
One of those bands consists of radio waves with a wavelength near 20.m . Calculate the frequency of these radio waves. Be sure your answer has the correct number of significant digits.
electrons having this speed would need to be treated as waves in atoms because the wavelength is on the order of the size of atoms.
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