How many theoretical plates produce a chromatography peak eluting at 12.83 min with a width at half-height of 8.7 s

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.

How many atoms are there in 5.70 mol of mg

What is the main reason why some developing countries fear the increase the free trade policies around the world?