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1. Calculate the molarity of 0.600 mol of Na2S in 1.90 L of solution. 2. Calculate the molarity of 22.3 g of MgS in 989 mL of solution.? Why is the answer D? Help!
Calculate the standard enthalpy, entropy, and Gibbs free energy for the following reaction: Fe2O3 (s) + Al (s) <-> Al2O3 (s) + Fe(s)? Explain the trend for the values of delta S(entropy) for the following allotropes of phosphorus P(s) -122
P(g) 0.0
P2(g) -108
P4(g) -372.79? Use geometry or symmetry, or both, to evaluate the double integral. (8ax^9 + 5by^9 + sqrt(a2 − x2))dA ,D = [−a, a] × [−b, b]?

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