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A chemist has synthesized two new dyes based on the molecular structure of plant-based dyes. The lowest energy absorption line for one dye is light in the visible region at 530 nm. The lowest energy absorption line for the other dye is light in the visible region at 645 nm. Based on this evidence, which molecule has the higher HOMO-LUMO gap?
Converting Grams and Moles, To do this assignment, use your calculator to do the calculations required. Then invert the calculator to read the message word. Insert the message word into the appropriate space in the statement
Find vapor pressure and density of liquid water at room temperature; state your source. Calculate the new vapor pressure of water at the same temperature when 740 torr of dry
A manufacturer of bicycles has 4819 wheels, 2305 frames, and 2250 handlebars. How many wheels are left over? How many frames are left over? How many handlebars are left over? Which part limits the production of bicycles?
A basketball is inflated to a pressure of 1.50 atm in a 20.0C garage. What is the pressure of the basketball outside where the temperature is -5.00C.
At 373 K, Keq = 2.39 for the following reaction: SO2Cl2(g) = SO2(g) + Cl2(g) In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively.
One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is constant at 77°C. Weights are removed suddenly from the piston to give the following sequence of three pressures.
what number of grams of NaHCO3 in a .210 g piece of antacid would generate 38.0 moles of CO2, if the CO2 is measured at 20 degrees C and 1.00 atm.
A sample of oxygen collected over water at 22C and 762 torr. what is the partial pressure of the dry oxygen. Vapor pressure of water at 22C is 19.8 torr
a solution is prepared using 15.0 ml of 1.0 m hcl and 20.0 ml of 0.5 m hno3. the final volume of the solution is 1.25
given rate constant 1.8x10-4 s-1 at 25 degree celsius when hydrolysis of sucrose c-12 h-22 o-12 into glucose and
At the anode in a galvanic cell (voltaic cell), a. electrons are accepted b. electrons are produced AND oxidation takes place c. electrons are produced d. oxidation takes place e. reduction takes place
fundamentals of acids and bases.1. water self ionizes to a small extent creating equal concentrations of hydronium and
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