Which of the following is a chemical change? a. silver tarnishing as the silver metal reacts with sulfur b. a rock eroding as the wind removes particles from it c. soil drying as water evaporates d. a solution of acid being diluted as water is added to it

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Why are people not able to skip a dive to the deepest part of the ocean