@X@user.full_name@X@ @GMU: What is the wavelength of photons having an energy of 0.00480 kJ/mol. Remember Planck’s constant is 6.626×10-34 J×s

@X@user.full_name@X@ @GMU: What is the balanced reaction for the following galvanic cell?Al(s)| Al3+(aq) || Fe3+(aq) | Fe(s)

In 2024, mental illness is caused by evil spirits or demons.

@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 11.92 g of kaolinite?

@X@user.full_name@X@ @GMU: Closed-tube manometers work exactly as barometers except by connecting them to a container its pressure can be measured. Assume you have a closed-ended manometer filled with an oil having a density of 0.7763 g/mL at 20°C rather than mercury (density = 13.546 g/mL at 20°C). What is the pressure if the height of the oil column is 1135.17 cm?

Sadie is so fearful of being overwhelmed by anxiety that she rarely steps outside her apartment. The thought of going shopping and getting lost in a crowd terrifies her, so she has her groceries delivered. Because of her fear, she earns her living as a freelance writer, working at home. Sadie’s behavior is most characteristic of

@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(C8H18(g)) is 17.379 kJ/mol.C8H18(g) + 7H2(g) → 8CH4(g)

Susan is considered abnormal because she is threatening to kill the Governor the next time she appears locally.

@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