4. (5pts) Answer the questions below a. (3pts) Calculate the frequency ν (cm^-1) for 1H35Cl from ν=0 to ν=1 (that means equal to ν0), with its force constant is 4.80 × 10^2 J m^-2. (1H = 1.0078 amu, 35Cl = 34.9689 amu, 1 amu = 1.627 × 10^-27 kg) b. (2pts) What is the zero-point energy of 1H35Cl?

3. (5pts) Consider the system: A(g) -＞ B(g) at 25°C. a. (3pts) Assuming that G°A = 8996 J/mol and G°B = 11,718 J/mol, calculate the value of the equilibrium constant for this reaction. b. (2pts) Calculate the equilibrium pressure that result if 1.00 mole of A(g) at 1.00 atm and 1.00 mole of B(g) at 1.00 atm are mixed at 25°C. (e^1.1 = 3.0, e^2.1 = 8.2)

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