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Acetaldehyde decomposes at 750 K: CH3CHO → CO + CH4. The reaction is first order in acetaldehyde and the half-life of the reaction is found to be 530 seconds. What is the rate constant for the reaction at this temperature?

A KCl solution is prepared by dissolving 40.0 g KCl in 250.0 g of water at 25°C. What is the vapor pressure of the solution if the vapor pressure of water at 25°C is 23.76 mm Hg?

A solution is made by dissolving 13 g of sucrose, C12H22O11, in 117 g of water, producing a solution with a volume of 125 mL at 20°C. What is the expected osmotic pressure at 20°C?

A solution is prepared by dissolving 17.75 g sulfuric acid, H2SO4, in enough water to make 100.0 mL of solution. If the density of the solution is 1.1094 g/mL, what is the mole fraction H2SO4 in the solution?

Consider a reaction that occurs by the following mechanism:A + BC → AC + BAC + D → A + CDThe potential energy profile for this reaction is shown below. Transition states occur at which reaction stages?

Which ion-dipole interaction results in the larger (more negative) hydration energy?

Kennedy needs to rotate a picture by 45 degrees. She should do which of the following?

Laila needs the pictures in her document to be distributed vertically. She should do which of the following?

Jeremiah has inserted a table and needs to fill it with data. After entering a value, he should do which of the following to advance the curser to the next cell in the table?

To italicize text, use which of the following keystrokes?