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Problem- Use standard free energies of formation to calculate delta G at 25 degrees C for each of the following reactions.
2NH3(g ) = N2H4(g) + H2(g)
2KClO3(s) = 2KCl(s) + 3O2(g)
Provide your answer in scientific notation
Problem- At equilibrium at 250C, the following concentration were found for the decomposition reaction: PCl5(g) PCl3(g) + Cl2(g): [PCl5]= 4.2x10^-5 M, [PCl3] = 1.3x10^-2 M, and [Cl2] = 3.9x10^-3 M. What is the value of the equilibrium constant, ..
On average, cow milk is 4.7%(w/w) lactose. The molecular weight of this disaccharide is 342.3g C12H22011. Assuming milk has the density of water.
Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more
A 100 mm diameter silicon wafer is oxidized completely. What is the thickness of the resulting SiO2 wafer? The molecular weight of Si is 28 g/mol and of SiO2 is 60 g/mol.
AgCl is a sparingly soluble salt, with a solubility of about 10-5 M in pure water. Adding KCN increases the solubility of AgCl because:
Draw the lattice direction 101 in a cubic unit cell. Draw the plane in a cubic unit cell with Miller Indices 101.
How many grams of Na3PO4 is needed to produce 575mL of a solution that has a concentration of Na+ ions of 1.50M?
Explain while a coil of red-hot platinum is exposed to the air, it cools quickly. While exposed to ammonia gas the coil continues to glow red-hot. Explicate this observation.
A student found that her mixture was 15% NH4Cl, 20% NACL, and 75% SiO2. Assuming her calculations are correct, what did she most likely do incorrectly in her experiment?
Thomas Jefferson Snodgrass found an unlabelled reagent bottle in his -80 C freezer. The Bottle contained a liquid. He found that the compound( compound 1) quickly evaporated when warmed to room temperature. H-NMR of the compound showed only two pe..
Propane (C3H8) is widely used in liquid form as a fuel for barbecue grills and camp stoves. For 76.6 g of propane, determine the following, in 4 significant figures.
I take 250.0 mL of 0.25 M NaCl and mix it with 500.0 Ml of 0.100 M NaCl. what is the concentration of NaCl in the mixture
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