The reaction below represents the decomposition of a generic diatomic molecule in its standard state. 1/2 A₂(g) →→→ A(g) - Assuming that the standard molar Gibbs energy of formation of A(g) is 8.12 kJ-mol¹ at 2500 K and -72.20 kJ-mol-¹ at 3500 Calculate the value of K (thermodynamic equilibrium constant) at each temperature. Determine the value of AH'xn for these data assuming that AH"n is independent of temperature. B D -208.9 kJ/mol -281.2 kJ/mol 208.9 kJ/mol 281.2 kJ/mol

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Which of the following is the correct method for creating 100mL of 6M acid from a 12M stock? Measure out 75 ml of the concentrated acid using a graduated cylinder and add it to 25 mL of DI water and mix thoroughly Measure out 50ML of the concentrated acid using a volumetric pipette in a 100mL volumetric flask, top it off with DI water and mix thoroughly Measure out 50mL of the concentrated acid using a graduated cylinder and add it to 50mL of DI water and mix thoroughly Measure out 50 mL of the concentrated acid using a beaker and add 50mL of water to it

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A 0.1 g amine-containing compound is dissolved in water then diluted to 100 mL. You subject it to spectroscopic analysis, in order to get the concentration of amine in this compound. Next, you get 1 mL of the previously diluted sample then dilute it again to 250 mL for measurement. Then, you fill 3/4 of a 1-cm cuvette with this diluted sample, and you run an analysis using an AAS. The recorded absorbance is 0.545 at 410 nm. What is the molecular weight of the compound? (The molar absorptivity is 1.23 x 104 cm-1 mol-1 L.)

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