Electromagnetic waves do not need to carry blank. Electromagnetic waves carry enough through matter, but they also carry enough energy through empty blank in a vacuum.

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

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 -

D=m/v =57.9/3 = 19.3 g/cm^3