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According to Schwabe and Wagner, the enthalpies of combustion in a constant-volume calorimeter forfumaric acid (HO2CCH=CHCO2H) and maleic acid (HO2CCH=CHCO2H) are ?-1337.21 kJ mol-1 and?-1360.43 kJ mol-1, respectively, at approximately 25. a. Calculate the enthalpies of formation of these isomers. b. What is the difference in enthalpy between these isomers? Maleic acid is the cis-isomer of butenedioic acid, whereas fumaric acid is the transisomer.
62.61 grams of CaOH2*7H2O contains. 1. How many moles of associated water molecules. 2. Molecules of associated water molecules
milk of magnesia is an over the counter pharmaceutical preparation used as a laxative and for heartburn. it can be
What properties of soil and its components could be measured to determine whether two soil samples are consistent with having a common origin?
What is the atomic weight of an element if 4.00 grams of it contain 2.98 x 10^22 atoms. A) 2.02 u B) 80.8 u C) 8.08 u D) 20.2 u E) 19.7 u
In one hour the average cockroach running at 0.08 km/hr consumed 0.80 mL of O2 at 1 atm pressure and 24°C per gram of insect weight.
A galvanic cell has an iron electrode in contact with 0.11 M FeSO4 and a copper electrode in contact with a CuSO4 solution.
A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at -2.34°C. Calculate the molar mass (in units of g/mol) of the solute. Kf of water is 1.86°C/m.
What is the molar solubility of AuCl (Ksp=2.0 x 10^-13) in pure water at 25 degrees Celcius
Neither serine nor leucine are eluted from the column because the pH of the elution buffer is too low. C. Neither serine nor leucine are eluted from the column because the pH of the elution buffer is too high. D. Leucine will elute first, followed..
How many liters of water vapor can be produced when 15L C3H8 are reacted with 15L O2? all gases are at the same temperature and pressure.
Draw a structure containing only carbon and hydrogen that is a chiral alkyne with six carbon atoms. (Wedge/dash bonds are omitted for simplicity.)
calculate the solubility of potassium bromide at 23 degrees celuius.assume that the solubility increases by an equal
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