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Problem- How do I calculate the Rf values from TLC if there are three spots from the crude product and one from the pure product?
Justify your calculation. No word count
For the blanced equation, shown below, What would be the limiting reagent if 67.6 grams of H2S were reacted with 55.9 grams of O2. 2 H2S (g) + 3 O2 (g) --> 2 SO2 (g) + 2 H2O (g)
How many grams (g) of calcium phosphide should be dissolved in 501.5 g water to produce a solution that freezes at -1.894 ºC? Kf = 1.86 ºC/molal. Use the ideal van't Hoff factor.
What is the ratio of the rate of effusion of the most abundant gas, nitrogen, to the lightest gas, hydrogen
a 10.00-ml sample of vinegar which is an aqueous solution of acetic acid hc2h3o2 is titrated with 0.5062 m naoh and
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
In the microscale oxidation of a Xylene to a Phthalic Acid, 825 mg potassium permanganate, 100 mg sodium carbonate, 3 mL water were put in flask and warmed then 125 microliters of unknown xylene and 10 mg detergent were refluxed for 45 minutes.
Calculate the composition of the following two buffer solutions. Each buffer is to begin with 0.10M ethanolamine (pka 9.50) and is also to contain acetic acid (pka 4.76). One buffer (buffer A) is to be PH 5.00, the other buffer (Buffer B) 9.26.
Draw the structure of the product that is formed when diphenylmethanone undergoes a reaction with PhMgBr
the method of initial rates involves substituting the initial reactant concentrations into rate calculations. when you
Demonstrate that L^2and Lzcommute withanyHamiltonian (for a single particle) for which the potential energy is spherically symmetric
A gas at 30 degrees C and 600 mmHg occupies a volume of 412 cm^3. What is the volume in cm^3 that the gas will occupy if the temperature is lowered to -30 degrees C at the same pressure
The baloon rises to an altitude of 20,000 m, where atmospheric pressure is 67 mmHg and the temp is 210 K. What is the volume of the balloon at 20,000 m
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