I NEED HELP PLEASE, THANKS :)
Describe each of the following compounds with as many of these words as apply: atom, molecule, pure substance, homogeneous mixture, heterogeneous mixture, element, solution.

-Table salt (sodium chloride or NaCl)
-Blue Cheese salad dressing
-Iron (Fe)

Isec i will do it and them i will let you know

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

Hi + naoh -> h2o + nal

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -