Given the two reactions H2S(aq)⇌HS−(aq)+H+(aq), K1 = 9.11×10−8, and
HS−(aq)⇌S2−(aq)+H+(aq), K2 = 1.41×10−19,
what is the equilibrium constant Kfinal for the following reaction?
S2−(aq)+2H+(aq)⇌H2S(aq)

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.