Acompound is 2.00% h by mass, 32.7% s by mass, and 65.3% o by mass. what is its empirical formula? the first step is to calculate the mass of each element in a 100-g sample of the compound. we use 100 g because it makes the calculations more straightforward. what is the mass of each element in a 100.0-g sample of the compound? mass h = g mass s = g mass o = g

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?