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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 10.77 g of kaolinite?

@X@user.full_name@X@ @GMU: A flexible container was filled with CH4 gas at a pressure of 1.07 atm and volume of 15.018 L. What pressure would this gas exert if the volume increased to 25.44 L? Assume temperature is constant.

@X@user.full_name@X@ @GMU: What is the energy of photons with a frequency of 8.464e+14 s-1? Remember Planck’s constant is 6.626×10-34 J×s

@X@user.full_name@X@ @GMU: What is the total concentration of ions in a solution consisting of 0.5236 M KBr?

@X@user.full_name@X@ @GMU: What is the standard cell voltage at 25.0oC for the reverse of the reaction below?Sn4+(aq) + Cd(s) → Sn2+(aq) + Cd2+(aq) K = 4.01e18

@X@user.full_name@X@ @GMU: The density of a particular gas is 0.6182 g/L at 695.89 mm Hg and 34.26 °C. Which gas is it?

What is the correct equilibrium constant expression, Kp, for the following reaction?4NH3(g) + 5O2(g) ⇋ 4NO(g) + 6H2O(g)

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Ag1+] = 0.1609M and [Cr3+] = 0.0164M 3Ag1+(aq) + 1Cr(s) → 3Ag(s) + 1Cr3+(aq) E°= 1.540V

@X@user.full_name@X@ @GMU: ACS-Using the given rate data what is the correct rate law for the reaction below?NH4+ + NO2− ⇋ N2 + 2H2O  Exp [NH4+]o [NO2−]o Initial Rates, Ms-1 1 0.119 0.119 8.43 2 0.238 0.119 1.69e1 3 0.238 0.172 3.52e1

Xenon tetrafluoride, XeF4, can be prepared by the reaction below. What is the correct equilibrium constant expression, Kp, for this reaction?Xe(g) + 2F2(g) ⇋XeF4(g)