How many electrons does tellurium need to obtain the octet rule

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.