Heat energy from the sun heats water on earth’s surface. The heated water evaporates and the water vapor rises into the air. As the water vapor rises, it cools and condenses around dust particles, and returns to earth’s surface as precipitation. This is a A.
the water cycle
B.
the oxygen cycle
C.
the heat cycle
D.
the carbon cycle

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]

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What the blanks in these lines are ?