@X@user.full_name@X@ @GMU: Using bond energies from the table below, estimate ΔH for the reaction below.CH3F(g) + HF(g) → CH4(g) + F2(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: Determine the rate of formation of N2 if the initial concentration of NH3 was 0.4799 M and decreased to 0.3540 M after 0.3790 hours. Use the reaction below.4NH3 + 3O2 → 2N2 + 6H2O

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Al3+] = 0.4050M and [Ag1+] = 0.0197M 1Al3+(aq) + 3Ag(s) → 1Al(s) + 3Ag1+(aq) E°= -2.460V

@X@user.full_name@X@ @GMU: Determine the rate of formation of N2 if the initial concentration of NH3 was 0.4799 M and decreased to 0.3540 M after 0.3790 hours. Use the reaction below.4NH3 + 3O2 → 2N2 + 6H2O

@X@user.full_name@X@ @GMU: Balance the reaction below; determine the sum of the coefficients; this is in an acidic solution! Include co-efficients for any unshown species (such as water and H+)._MnO4- + _Ag → _Mn2+ + _Ag+

@X@user.full_name@X@ @GMU: A gas mixture contains an unknown amount of CO and 0.0967 mol of NO2. How many moles of CO are there, if the total pressure is 756.18 mm Hg and the partial pressure of CO is 459.74 mm Hg?

@X@user.full_name@X@ @GMU: Balance the reaction below; determine the sum of the coefficients; this is in a basic solution! Include co-efficients for any unshown species(such as water and hydroxide)._CrO42- + _SO32- → _Cr(OH)3 + _SO42->

@X@user.full_name@X@ @GMU: A flexible container was filled with CO2 gas at a pressure of 1.205 atm and volume of 16.971 L. What volume would this same gas occupy if the pressure increased to 2.724 atm? Assume temperature is constant.

@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(C5H12(g)) is -8.234 kJ/mol.C5H12(g) + 4H2(g) → 5CH4(g)

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Ni2+] = 0.4885M and [Ag1+] = 0.0161M 1Ni2+(aq) + 2Ag(s) → 1Ni(s) + 2Ag1+(aq) E°= -1.030V