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@X@user.full_name@X@ @GMU: Assume you have an open ended manometer filled with an oil having a density of 0.7363 g/mL at 20°C rather than mercury (density = 13.546 g/mL at 20°C). What is the pressure in atmospheres if the level of the arm open to the atmosphere is 142.30 cm lower than the level in the arm connected to the gas sample? The atmospheric pressure reading is 759.42 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)._MnO4- + _I- → _MnO2 + _I2

@X@user.full_name@X@ @GMU: Determine the rate of formation of O2 if the initial concentration of N2O5 was 0.4715 M and decreased to 0.3895 M after 0.2064 hours. Use the reaction below.2N2O5(g) → 4NO2(g) + O2(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 15.64 g of kaolinite?

@X@user.full_name@X@ @GMU: Which of the following is a mixture?

@X@user.full_name@X@ @GMU: What is the empirical formula of a compound if its percent composition is 49.29% C and 9.653% H and 19.16% N ? The compound contains only C, H, N and O.

@X@user.full_name@X@ @GMU: A flexible container was filled with CO gas at a pressure of 1.955 atm and volume of 18.399 L. What volume would this same gas occupy if the pressure increased to 4.686 atm? Assume temperature is constant.

@X@user.full_name@X@ @GMU: What is the free energy change for the reaction below, if the reaction quotient, Q, at 25.0oC is equal to 7.92e-5?5C2H2(g) + 7 H2(g) → C10H24(g) ΔGo = -908.030 kJ.

@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?