An acid dissolves easily in water and the solution becomes quite hot. Which of the following are true about the dissolution of the acid? 1. The process is endothermic
II. The entropy of the solution is increasing.
III. The process is exothermic.
A II and III only
Bll only
Cill only
D I only

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

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?

Ab c or d ? i’m not sure what the answer is