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A 20 mL volume of previously boiled, deionized water is added to the Erlenmeyer flask to prepare the sample for titration. explain why this volume is not critical to the analysis.
if the density of mercury is 13.6g/cm3, what will be the volume of 300g of mercury ?
what is the maximum wavelength of light that can be used to observe the photoelectric effect? answer in nm.
an unscrupulous character wants to gold-plate a cheap watch tosell. he has a solution of aqueous auno3 and figures he
What are the commonalities/general concepts/theme of metabolism. Please give as many as you can and specifics. For example, "regulation" which includes allosteric, feed forward, feed backward
How many milliliters of 0.100 M Ba(OH)2 solution are required to neutralize a solution containing 3.92 g H2SO4
Explain the significance of the chromic acid test. What would you observe in the case of a positive result? Do you expect 9-fluorenol to give a positive or negative result? What about the 9-fluorenone?
how many grams of coniine would he have needed to ingest to give a 50% chance of causing his death? If Coniine is about 3.2% by weight of the hemlock leaves, how many grams of hemlock would need to be used to make the tea?
Researchers analyzing an unknown hydrocarbon with chemical formula CxHy found that 225 grams of O2(g) were required for complete combustion of 1.0 mol CxHy, to form CO2(g) and H2O(g) only. Unfortunately, a faulty valve between the furnace and abso..
Suppose you were to prepare a buffer solution using ammonia and ammonium chloride. What would be the molar ratio of acid to its conjugate when the pH was adjusted to each of these values. (Kb = 1.8 multiplied by 10-5) (a) pH = 10.19
it decomposes into CO gas and Cl2 gas. If 12.5g of COCl2 is initially placed in a 2.20L container at 575K, calculate the concentration of CO at equilibrium. Kc= 2.50 * 10^-3 at 575K.
If the coal is burned in teh DPH power plant that uses 2300 tons of coal per day, what is the daily production of calcium sulfite, if the conversion is 98%? if 50 pounds of calcium oxide costa $13.50 how much does DPH power plant per day for CaO
An electric power station annually burns 3.3 107 kg of coal containing 2.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP.
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