Which particle can represent the most basic unit of a compound? A. An electron
B. An atom
C. An isotope
D. A molecule

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

How do the kidneys affect homeostasis

Which is an example of an exothermic process?