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Explain what are the potential sources of error for determining the molar extinction coefficient for methylene blue? Explain which sources contribute most to the uncertainty in the coefficient?
hydrochloric acid hcl is a strong acid that undergoes essentially complete dissociation in water according to the
nbspwhen titrating 0.15 m hcl with a calcium hydroxide solution of unknown concentration 35 ml of acid are required to
What is the isotropic difference (in per mil) at 25 degrees between gas, liquid, and solid phase for the elements carbon and sulfur? Show calculations
in a laboratory synthesis a student begins with 5.00 ml of acetic anhydride and 2.08 g of salicylic acid. once the
Iron exhibits three common oxidation states, as seen in Fe, Fe2+, and Fe3+. Write electron configuarations for each of these species using the noble gas abbreviations and determine the n and l quantum numbers of the electron that is removed in goi..
If a 0.135g sample of NaCl were placed on an ion-exchange column in the H+ form and the eluate titrated with 0.1231 M NaOH, what volume of the NaOH solution would be required to reach a phenolpthalein end point
The combustion of .1703 mole of hydrocarbon produces 12.27g H2O and 22.48g CO2. What is the molar mass of the hydrocarbon?
the brown gas no2 and the colorless gas n2o4 exist in equilibrium 2no2 lt----gt n2o4. in an experiment 0.625 mole of
The CO 2 produced in one round of the citric acid cycle does not originate in the acetyl carbons that enter that round. Create a diagram of the TCA cycle to illustrate the answers to questions 1a and 1b.
Magnesium oxide decomposes into magnesium and oxygen. If 12.09g of magnesium oxide decomposes to form 7.29g of magnesium, what mass of oxygen gas is also released in the reaction?
A reaction inside a cylindrical container with a movable piston causes the volume to change from 14.0L to 21.0L while the pressure outside the container remains constant at 0.975 atm.
At equilibrium 1.97e-02 mol of NOCl is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value..
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