Two grams of the crystalline compound temperature. At the boiling point temperature of acetone, 100 grams of the same compound dissolve in 100 mL acetone. When recrystallizing 200 g of compound A from acetone, how much solid material can be isolated theoretically after cooling to room temperature when the following volumes of solvent (acetone) are used: a) 100 ml, b) 200 mL, or c) 400 mL

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?