Which of the following substances would you expect to have a low melting point? A. sodium chloride
B. silicon dioxide
C. carbon dioxide
D. aluminum chloride

Which statement about the stamps is correct?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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?