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The blank solution utilized to calibrate the spectrophotometer is 10.0mL of 0.2 M Fe(NO3)3 diluted to 25.0mL with 0.1 M HNO3. Explain why is this solution preferred to simply utilize de-ionized water for the calibration?
the freezing point of the resulting solution is 3.77 degrees C. The freezing point of pure benzene is 5.48 degrees C and Kf for benzene is 5.12 degrees C/m. Calculate the molar mass of the unknown compound.
On a trip of 287 miles, a driver maintains an average speed of 85.0 km/hr. How many minutes does the trip take
A pipet delivers 10.5, 10.3, 10.9 and 10.7 ml .(a)find the mean volume and deviation from the mean for each and calculate the average deviation from the mean (b) calculate the relative deviation (in %) for this set of data. Relative deviation (%) ..
A triiodide solution was being examined by coulometry. The instrument measured 33.7 coulombs from the quantitative reduction of triiodide to iodide ion for a 10mL solution. Compute the concentration of triiodide in the solution.
what fraction of the band would be filled with electrons? Assume that all valence bands (5s, 4d, and 5p) overlap. Show your work and your resulting band diagram.
Rank the fluorine species from most to least stable. To rank items as equivalent, overlap them.
How many ml of 0.122 M MnO4- are required to react with an excess of C2O4^2- in order to produce 75.25 ml of carbon dioxide gas measured at 30.0 degrees C and 715 torr? MnO4- (aq) + C2O4^2- (aq) -------> MnO2 (s) + CO2 (g) Basic solution
A gas cylinder with a movable piston initially contains .25 moles of neon in a 5 L. If .5 moles of helium are added to this gas cylinder, what will be the final volume
How does "spartan student" work. Supposedly i have work "due" but I do not see how it is "due" and how my teacher will see my assignments if this is a program. Is my saved work able to be seen by my teacher.
Classify each of the subsequent reactions as a combination, single replacement, decomposition, double replacement or combustion
question when trimethylamine ch33n dissolves in water it partially ionizes producing the trimethylammonium ion ch33nh.
Phenolphthalein has a pKa of 9.7. It is colorless in its acid form and pink in its basic form. For each of the pH's listed, calculate the ratio and predict the color
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