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In preparing a standard solution of K3[Fe(CN)6], 0.1248 g of the solid was weighed using an analytical balance with an uncertainty of 0.1 mg. Then the solid was dissolved and transferred to a 50 ml volumetric flask and the flask was filled to volume with water. Using a transfer pipette, you transferred 1 ml of the solution to a 100 ml volumetric flask and the flask was filled to volume with water. Calculate the molarity of the final solution with uncertainty. All the glassware used was Class A. The tolerances of Class A glassware can be found at https://www.titrations.info/pipette-burette.
Does each of the following statements describe a simple enzyme or an enzyme that requires a co factor
4HCl + MnO2 = MnCl2 + 2H2O + Cl2 When 1.22 mol of HCl reacts with excess MnO2, how many moles of Cl2 form?
If an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87 C
why is it dangerous to heat a liquid in a distilling apparatus that is closed tightly at every joint and has no vent to the atmosphere?
Why was potassium carbonate used in the distillation of 2-methyl-e-hexanol? Use the curved arrow notation to deaw a mechanism to show
calculate w for the following reactions that occur at 298k and 1 atm pressure, CO2(g) + NaOH(s) -> NaHCO3(s) and 3O2(g) -> 2O3(g)
The specific heat of mercury metal is 0.138J/gK. How much heat, in joules, is required to heat a 71.5 gram sample of mercury from -6oC to 54.4oC? Enter your answer in scientific notation with no units.
The chemical formula for caffeine isC8H10N4O2. Explain how many grams of carbon are present in a 12.46 gram sample of caffeine
Radio waves are very low energy forms of electrmagnetic radiation. What is the energy of a mole of radio wave photons with a
The generic metal hydroxideM (OH)2 has Ksp=5.45*10^-18. (Contribution of OH- from water is ignored). A) What is solubility of M (OH)2 in pure water?
What is the iron molar concentration in the serum sample? Not that the following relationship may be used: Aunk/Aunk+std - Cunk/{Cunk+Cstd}
question an experiment shows that a 250 ml gas sample has a mass of 0.430 g at a pressure of 728 mmhg and a temperature
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