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+//Chapter 2: Spectroscopy and Photochemistry
+//Problem: 5
+clc;
+
+//Declaration of Constants
+pi = 3.141                  // Pi
+c = 3 * 10 ** 10            // Speed of light,in cm/s
+
+//Declaration of Variables
+v_bar = 2140                // Fundamental vibrating freq, per cm
+m_C = 19.9 * 10 ** -27      // Atomic mass of C,in kg
+m_O = 26.6 * 10 ** -27      // Atomic mass of O,in kg
+
+// Solution
+mu = m_O * m_C / (m_C + m_O)
+k = 4 * (pi * c * v_bar) ** 2 * mu
+
+mprintf("The force constant of the molecule is %.3e N/m",k)