In which of the following does matter change into a new substance?
a. chemical change
b. physical change
c. boiling
d. melting

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

What substance has a mass of 9.5g and volume of 2.1cm^3

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?