A scientist is investigating which type of medicine would dissolve faster, a solid pill or a scoop of powder. Which hypothesis should the scientist develop given prior knowledge about surface area?
A. Solid pills have more surface area and will take longer to dissolve.
B. Powders have less surface area and will dissolve faster.
C. Solid pills have less surface area and will not dissolve.
D. Powders have more surface area and will dissolve faster.

Why doesn't heat added to water make the tempature rise above 100c

Which of the following units is not an official si unit? mole liter kilogram ampere

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?