Los materiales de aluminio para construcción tienen un recubrimiento duro, protector, transparente de óxido de aluminio, Al2O3, que se forma al reaccionar con O2. El ácido sulfúrico, H2SO4, de la lluvia ácida disuelve este recubrimiento protector y forma sulfato de aluminio, Al2(SO4)3, y agua. ¿Cuál sería la ecuación para esto?

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?