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Determine the percent yield of barium sulfate obtained (4.9852g) when 100.0 mL of a 0.2516M aqueous barium chloride is treated with an excess of sulfuric acid? Hydrochloric acid is a by-product.
Combustion of 5.23 mg of phenol yields 14.67 mg CO2 and 3.01 mg H2O. Phenol contains C, H, and O. What is the percentage of each element in this substance? What is the empirical formula?
Compare the characteristics of these two gases: Oxygen and Carbon Dioxide. Discuss the uses of oxygen in Medicine/Anaesthesia based on its characteristics.
A chemist wants to resolve a particular amine, but she has only meso-tartaric acid on hand. She scans the lab inventory and finds several acids, but they are listed only by their common names, which she does not know or remember.
Acid rain was at one time an important point of contention between the United States and Canada. Much of this acid was the result of the emission of sulfur oxides by coal-fired electricity-generating plants in southern Indiana and Ohio
Given the following diagrams at t = 0 min and t = 30 min, what is the half-life of the reaction if it follows first-order kinetics? After four half-life periods for a first-order reaction, what fraction of reactant remains?
Write a balanced chemical equation, including physical state symbols, for the combustion of gaseous methan into gaseous
The sample is dissolved in acidic solution and the manganese is oxidized to the permanganate ion MnO4-. The MnO4- ion is reduced to Mn2+ by reacting with 50 mL of .0800 M FeSO4 solution. The excess Fe2+ ions are then oxidized to Fe3+ by 21.9 mL of..
Determine the entropy of an ideal gas with cp=(7/2)R,between the following states: P1=1bar,T1= 300K, P2= 0.5bar, T2= 500K
Calculate the steric strain for the most stable chair conformer and for a less stable conformer for the following: a) trans-1-ethyl-3-fluorocyclohexane
Baking powder is made up of sodium hydrogen carbonate and calcium hydrogen phosphate. When baking powder is wet, these components reacts to produce carbon dioxide. The equation for this reaction is given below.
what is the equation for gypsum when it is heated below 220 degrees celsius and also when it is heated to red heat?
A benzylic carbocation is generated under the conditions of part A. would the presence of a para CH3O- group on the benzene ring
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