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A student has a green dye mixture on which she performs a TLC experiment with a silica gel plate and acetone as the solvent. She obtains a yellow spot with an Rf of 0.75and a teal spot with an Rf of 0.45. Explain the significance of her data.
kilimanjaro in tanzania is the tallest peak in africa 19340 ft.. on a particular day the barometric pressure at the top
cyclohexane-toluene mixture, and then obtain IR spectra for each fraction. How would the IR spectrum of the first 1 mL fraction look different from that of the last 1 mL fraction?
Classify each of the following elements as main-group or transition elements. Write a short definition for each of the molecular compound, ionic compound, diatomic molecule, molecular formula and empirical formula.
magnesium chloride are used to make a solution with a final volume of 1.74L, then waht is the final Mg2+ ion concentration in ppm?
What is the maximum number of phases that can be in mutual equilibrium in a four-component system
The air in a laboratory was measured with a barometer to be 7.40 x 100 to the 2 power mm Hg. What is the laboratory air pressure in atm?
Key by key on calculator how would I solve for x in 0.2=(0.5)^(x/14.2)? -Original question that brought me to that point-"The half-reaction of 32P is 14.2 days
How many grams of ice at -6.6 C can be completely converted to liquid at 10.5 C if the available heat for this process is 5.33×10^3 kJ. For ice, use a specific heat of 2.01 J/(g.C) and ΔH fusion= 6.01 kJ/mol.
Calculate the standard molar enthalpy for the complete combustion of liquid ethanol (C2H5OH) using the standard enthalpies of formation of the reactants and the products
For each of the following bonds, indicate the posotive ?^+ end and the negative ?^- end. Draw an arrow to show dipole for each: a) SI--Br; b) Se--F; c) Br--F; d) N--H; e) N--P.
The pressure on top of Mount Everest averages about 236mm Hg. 1. convert this pressure to pounds per square inch. 2. convert this pressure to inches of mercury 3.convert this pressure to atmospheres
determine the volume of .450m napo4 is needed to precipitate all the leadii ions from 190.0ml of .550m leadii
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