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SO2 present in air can be analyzed by titraion with permangante ions, as described in the equation:
5SO4 + 2MnO4- + 2H2O ----> 5SO4 2- +2Mn 2+ +4H+
How many grams of SO2 are in a sample of air if the sample requires 9.37mL of 0.00800M KMnO4 for titration? Is the reaction a redox reaction? Explain.
Find the change in the fraction of visibility for a person from planet Krypton with x-ray vision in addition to visible spectrum.
If you have 200.0 mL of a 30.0% aqueous solution of isopropyl alcohol, what volume of water is in the solution?
A portable photometer with a linear response to radiation registered 73.6 μA with a blank solution in the light path. Replacement of the blank with an absorbing solution yielded a response of 24.9 μA. Calculate
The pH in the stomach of a certain animal is 3.8. This means that the hydrogen ion concentration in the stomach
Consider the decomposition of calcium carbonate. Assume that ?H° = 177.8 kJ/mol and ?S° = 160.5 J/K·mol for the temperature range.
Suppose in the lab you measure 0.3951 g of NaOH and dissolve it into 100.0 mL of water. You then measure 0.1985 g of KHP and place it in a clean, dry 100-mL beaker, and then dissolve the KHP in about 25 mL of water and add a couple of drops of phe..
A 155 g sample of an unknown substance was heated from 25.0°C to 40.0°C. In the process, the substance absorbed 5696 J of energy. What is the specific heat of the substance?
How are the opposing pathways of glycolysis and gluconeogenesis prevented from extensive futile cycling? a) The catabolic and anabolic pathways do not take place in the same part of the cell
A flask contains 0.250 mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask.
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water . Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
What are the equilibrium partial pressures of CO(g) and CO2(g) when 2.32 atm CO(g) and excess FeO(s) react in a sealed container at 1000°C? PCO atm PCO2 atm
sodium bisulfite is a reducing agent. write a balanced oxidation reduction reaction equation for the reaction that occurs
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