Explain why pbcl2 did not precipitate immediately on addition of hcl. (what condition must be met by [pb2+] and [cl-] if pbcl2 is to form?)

What is the mass of 8 moles of sodium atoms

If i add water to oil what will happen

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process