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Explain what is the pH of 355.0mL of an aqueous solution containing 0.607 g of the strong acid trifluoromethane sulfuric acid (CF3SO3H)?
How many grams of KCl would be required to react with 420 mL of 0.42 M AgNO3 solution?
the xylene that received has a density of 0.86 g/ml. Its volume is 2.0 ml, and its concentration is 0.069 g/ml. First of all, need to dilute the solution to a 1:100 ratio (ex: 69000 µg/ml to 690 µg/ml). How do dilute the solution to a 1: 100 ratio..
If 0.208g of an unknown salt of oxalate ion requires 25mL of 0.02 M MnO4^- solution, calculate the molar mass and write the molecular formula of the unknown ( oxalare is the anion, what is the cation.).
raise the temperature of an 12.5g piece of unknown substance from 13.0 oC to 26.2 oC. What is the specific heat for the substance?
Where on the modern periodic table would you probably find an element that is a dense gas at room temperature? EXPLAIN 3) What should be the most metallic element?
Ammonium hydrogen sulfide decomposes according to the following reaction, for which Kp = 0.451 at a given temperature. If 55.0 g of NH4HS is sealed inside a 5.00 L container at this temperature, calculate the partial pressure of NH3(g) at equilibr..
While cytotoxicity, antiviral activity, and immunosuppressant properties of didemnin-C and of its 8 analogs were excellent to very good, these compounds were, unfortunately, dropped from further studies and development at the stage of human trials..
What is the wavelength (in meters) of photons with the following energies. In what region of the electromagnetic spectrum does each appear.
Nitromethane will absorb 240nm light. Assuming that each nitromethane molecule absorbs 1 photon, how many molecules would it take to absorb 1 kJ of light at 240nm
During the cooling of the fired crucible, water condensed on the crucible wall before its mass measurement. Will the percent water in the hydrated salt be reported as being too high, too low or unaffected? Explain.
If 8.8 mg of iodine-123 is used in an experiment, how many milligrams of iodine-123 should remain after 50 hours. Assume that iodine-123 has a half-life of 10 hours.
What is the mass percentage of iron in a sample if titration of 1.2284g of the sample requires 57.91 mL of .1018M of Ce(NH4)2(NO3)6 for complete reaction?
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