Which of these is an extensive property of a substance?
color
hardness
malleability
volume

Answer;

-Volume

Explanation;

Extensive properties are the physical quantities of a substance or an object whose value is varies or corresponds to the size of the system being described, or to the quantity of matter in the system.For example, mass of a substance is an extensive property since it depends on the amount of substance.Other examples of extensive properties includes, size, weight, Length, etc.

Olá. porque a reação na temperatura é muito rapida a do copo : )

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 -