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Acetylene gas, C2H2(g), is used in welding.
(a) Write a balanced equation for the combustion of acetylene gas to CO2(g) and H2O(l).
(b) How much heat is produced in burning 1 mol of C2H2 under standard conditions if both\ reactants and products are brought to 298 K?
(c) What is the maximum amount of useful work that can be accomplished under standard conditions by this reaction?
Explain how the electron configuration of calcium can be determined by changes in I.E. (specifically, the large changes, for example between electron 18 and 19).
Draw the hydrogen on the chiral center. Make sure you indicate the chiral center through stereo wedges , and that there are no other bonds between the two bonds drawn with the stereo wedges.
when a metal was exposed to light at a frequency of 4.00times 1015 s-1 electrons were emitted with a kinetic energy of
Why is ethylene glycol used as the solvent for the dehydrohalogenation of of 1,2-dibromo-1,2-diphenylethane
high spin whereas octahedral complexes can be either high or low spin, depending on the metal and/or ligand. What is the most likely explanation of this experimental result?
An aqueous solution of a compound with a molar mass of 34.02 g/mol is 24.0% by mass as well as has a density of 1.09 g/cm3. Explain what is the molarity of the solution
How many potassium ions must a cell lose in order to produce a membrane potential of - 95 mV for potassium? How does this compare to the number of potassium ions within the cell
Explain what is the half-life of Ba-137m. Explain what fraction of activity remains after 6.25 minutes? (A=Aoe (-kt); k = .693/t1/2)
Ten milliliters of this solution is after that diluted to 250mL. The absorbance of the solution is 0.241 in a 1cm cell. Explain what is the percentage of vitamin C in the tablet. The molar absorptivity is 7415.
0.1278- sample that is 97.50% As2O3 by mass had been used in the titration, how many milliliters of the 0.02140M KMnO4(aq) would have been required?
Is second order (in A) with rate constant 0.0006 L mol-1 s-1. At infinite time [A] = 0. How long will it take a solution with [A] = 79.2 M to decompose such that [A] = 17.2 M? Give your answer in seconds.
portion of that solution is diluted by adding 165 mL of water. What is the final concentration? Assume the volumes are additive.
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