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@X@user.full_name@X@ @GMU: What is the free energy change at 25°C for the reaction below, if ΔGfo(CH4(g) = -50.790 kJ/mol, ΔGfo(C8H10(g)) is 128.238 kJ/mol.C8H10(g) + 11H2(g) → 8CH4(g)

@X@user.full_name@X@ @GMU: What is the wavelength of photons having an energy of 536 kJ/mol. Remember Planck’s constant is 6.626×10-34 J×s

@X@user.full_name@X@ @GMU: A compound contains only calcium and iodine. A sample weighing 9.93 g of this compound contained 1.35 g of calcium. How many grams of iodine would there be in another sample of this compound containing 2.40 g of calcium?

@X@user.full_name@X@ @GMU: What is the free energy change at 25°C for the reaction below, if ΔGfo(CH4(g) = -50.790 kJ/mol, ΔGfo(C5H8(g)) is 210.072 kJ/mol.C5H8(g) + 6H2(g) → 5CH4(g)

@X@user.full_name@X@ @GMU: Using bond energies from the table, estimate ΔH for the reaction below.N2(g) + 2H2(g) → N2H4(g) Bond Energies, kJ/mol Single Bonds   H C N O S F Cl Br I H 432                 C 411 346               N 386 305 167             O 459 358 201 142           S 363 272 — — 286         F 565 485 283 190 284 155       Cl 428 327 313 218 255 249 240     Br 362 285 243 201 217 249 216 190   I 295 213 — 201 — 278 208 175 149   Multiple Bonds C=C 602 C=N 615 C=O 799 CºC 835 CºN 887 CºO 1072 N=N 418 N=O 607 S=O (in SO2) 532 NºN 942 O2 494 S=O (in SO3) 469

@X@user.full_name@X@ @GMU: What is the correct name for Fe2O3?

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Ag1+] = 0.3890M and [Cd2+] = 0.0170M 2Ag1+(aq) + 1Cd(s) → 2Ag(s) + 1Cd2+(aq) E°= 1.200V

@X@user.full_name@X@ @GMU: A flexible container was filled with CO2 gas at a pressure of 1.63 atm and volume of 19.688 L. What pressure would this gas exert if the volume decreased to 12.94 L? Assume temperature is constant.

 Which of the following conditions will cause equilibrium to shift to the right?FeO(s) + CO(g) ⇋ Fe(s) + CO2(g)

@X@user.full_name@X@ @GMU: Kaolinite, a clay mineral with the formula Al4Si4O10(OH)8, is produced naturally by the chemical weathering of aluminum silicate minerals like feldspar (granite). Kaolinite is used industrially as filler in slick-paper for magazines and as a raw material for ceramics. How many grams of oxygen are present in 12.00 g of kaolinite?