Fill in the coefficient needed to make the equation balanced. 1. Na + Cl2 → NaCl

a. 2, 2
b. 2, 3
c. 2, 1
d. 2, 4

2. Al + S → Al2S3

a. 2, 2
b. 2, 3
c. 2, 4
d. 2, 6

3. H2 + O2 → H2O

A. 2, 2
b. 2, 3
c. 2, 4
d. 2, 8

4. Fe + O2 → Fe2O3

a. 4, 2, 2
b. 4, 2, 1
c. 4, 3, 2
d. 4, 3, 1

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?