Determine if the reverse reaction for the energy level diagram is endothermic or exothermic and what the ΔH for the reverse reaction is.

@X@user.full_name@X@ @GMU: What is the mole fraction of magnesium nitrate, Mg(NO3)2, in an aqueous solution that contains 1.8905 g of magnesium nitrate dissolved in 22.6778 grams of water? MW(Mg(NO3)2) = 148.315 g/mol.

@X@user.full_name@X@ @GMU: How many grams of sodium chloride, NaCl, would be required to prepare a 0.2243 m NaCl solution by combining this compound with 0.2915 L of water (assume a density of 1.00 g/mL)? The molecular weight is 58.4425 g/mol.

@X@user.full_name@X@ @GMU: A mixture containing an initial concentration of 0.1513 M for N2 and 0.1203 M for O2 is allowed to come to equilibrium (see reaction below). What must be the equilibrium concentration of NO?N2(g) + O2(g) → 2NO(g) Kc = 2.70e-18

On a piece of paper, write “2+2=4” Take a picture/scan of it and upload it.

@X@user.full_name@X@ @GMU: What is the value of Kc at 250.00 °C for the reaction below if Kp is 2.33e-3 at this temperature?CO(g) + 2H2(g) → CH3OH(g)

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@X@user.full_name@X@ @GMU: What is the freezing point depression when 18.17 g of NaOH (formula mass = 40.00 g/mol) is dissolved in 193.56 g H2O? The freezing point depression constant is 1.8600 (°C*kg)/mol. Assume any salt is completely ionic!

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A deposition is taken from a witness in order to determine: