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A 8.64-ppm (1 ppm = 1 mg/L)solution of FeSCN2+ has a transmittance of 0.295 when measured in a 1.00-cm cell at 580 nm. Calculate the extinction coefficient for FeSCN2+ at this wavelength.
what is the theoretical and percent yields of ethanol if 648 grams of sucrose undergoes fermentation and 349 grams of ethanol is obtained.
Would the organisms find the environment in the untreated water more favourable, less favourable, or identical (from an energy standpoint) after equilibration with air. Explain briefly
a gas diffuses only .5 times as fast as an oxygen molecule at the same temperature. what is the molecular weight of the gas?
What is the molarity of a solution that contains 75.0g of KNO3 dissolved in 0.350L of solution
when strongly heated magnesium sulfide formed a crystalline deposit on the walls of a sealed reaction vessel. metallic
A stream of humid air containing 1.00 mole% H2O(v) and the balance dry air is to be humidified to a water content of 10.0 mole% H2O. For this purpose, liquid water is fed through a flow meter and evaporated into the air stream. The flow meter, R, ..
For each pair of compounds below, indicate the more reactive in the type of mechanism specified. Briefly state why. Explain the smallest molecular dipole moment
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 26.50 mL of 0.0502 M NaOH but overshoot the end point
What is the structure for an H NMR of C7H9NO giving signals of: 6.93, (0.93 H, triplet); 6.20 (1.03 H, doublet); 6.13 (1.01 H, doublet); 6.05 (1.03 H, singlet); 3.62 (3.00 H, singlet); 3.56 (3.01 H, singlet)
show work on the mineral greenockite is yellow sulfide of cadmium that is 78.0% cadmium and 22.0% sulfur. determine the empirical formula of greenockite.
The following choices list some common laboratory solvents. In which of these solvents would LiCl be the LEAST soluble
At the temperature that both stages are operating at, the vapor pressure of A is 10 kPa and the vapor pressure of B is 100 kPa. The liquid and vapor phases leaving each unit are in equilibrium. Find the composition ..
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