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@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 16.64 g of kaolinite?

@X@user.full_name@X@ @GMU: Which of the following would require an oxidizing agent to occur?

Ammonia, NH3, can be prepared by the reaction below. What is the correct equilibrium constant expression, Kc, for this reaction?N2(g) + 3H2(g) ⇋ 2NH3(g)

@X@user.full_name@X@ @GMU: What is the entropy change for the reaction below, if the standard entropies of reactants and products are So(C(gr)) = 5.74 J/mol*K, So(H2(g)) = 130.68 J/mol*K, and So (C6H6(g)) = 269.200 J/mol*K.6C(gr) + 3H2(g) → C6H6(g)

@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- + _H2 → _Mn2+ + _H+

@X@user.full_name@X@ @GMU: What is the standard cell voltage at 25.0oC for the reaction below?Cr3+(aq) + Al(s) → Cr(s) + Al3+(aq) K = 3.75e39

@X@user.full_name@X@ @GMU: From the reaction below, calculate the free energy of formation for C9H18(g) at 25°C, if ΔGfo(CH4(g)) is -50.790 kJ/mol.9CH4(g) → C9H18(g) + 9H2(g) ΔGo = 569.985 kJ/mol

@X@user.full_name@X@ @GMU: ACS-Using the given rate data what is the correct rate law for the reaction below?NO2 + CO⇋ CO2 + NO  Exp [NO2]o [CO]o Initial Rates, Ms-1 1 0.167 0.167 5.86e-9 2 0.334 0.167 1.17e-8 3 0.334 0.242 1.70e-8

@X@user.full_name@X@ @GMU: What is the correct name for FeBr3?

@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 0.7722 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 1094.62 cm?