What is the empirical formula of compound that is 64,8%,13,6%H and 21,6% O by mass?​

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.

Which change to the system wood cause the freely-moving piston to lower?

What is the rate law for the uncatalyzed reaction?