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An oxy-acetylene welding torch uses ethyne (acetylene) at the rate of 500 mL per minute, measured at STP. The reaction is described by:
2C2H2(g) + 5O2(g) ® 4CO2(g) + 2H2O(l); DH = -2599 kJ mol-1
What is the heat of combustion of ethyne in kJ mol-1 and kJ g-1?
Which of the following organic halides will undergo an E2 elimination on heating with potassium hydroxide in ethanol? a. 2,2-dimethyl-1-bromopropane b. 2,2-dimethyl-1-bromocyclohexane c. benzyl chloride (C6H5CH2Cl)
A reaction where A +B ? C +D has a ? Go' of 5 kcal/mole and the concentrations are for A through D, respectively 10 mM, 5 mM, 2 mM and 3 mM. Find the ?G' and state if favorable or not.
Vinegar, which is just a dilute acetic acid solution, is very common and versatile. The concentration of store-bought vinegar around a 5.0 % solution by mass, and its density is approximately 1.01 g/mL. (a) Suppose I dilute this vinegar into a bottle..
Calculate the pH of a mixture of .25M acetic acid and .1M sodium acetate. The pKa of acetic acid is 4.76.
A 2.52- sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess to yield 4.36 of and 0.892 of as the only carbon and hydrogen containing products respectively.
the molality of a solution is the number of moles of the solute that is dissolved in 1000 g of solvent. using the
Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90. PKr Side Chain is 3.90 (COOH) How do i find the net charge?
If air is drawn into the pump at a pressure of 0.97 atm during the upstroke, how long must the downstroke be, in centimeters, to raise the pressure of the air to 5.40 atm (approximately the pressure in the tire of a 10-speed bike). Assume no chang..
Determine the equilibrium constant and the equilibrium mole fraction of NO at the temperature from part c. K at 298K is 4.03*10^-31
State the electronic configuration of the Ni2+ ion. (b) Explain what are the possible values of the total spin quantum numbers S and Ms for this ion
A solution is prepared by mixing 0.0300 mol CH2Cl2 and 0.0500 mol of CH2Br2 at 25°C. Assuming the solution is ideal, calculate the composition of the vapor
(b) By preheating sensibly and then passing through a water spray washer with recirculated water until relative humidity rises to 95% and then again heating sensibly to the final required state. Determine for (a) and (b) the total heating required..
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