Tiene los 4 lados iguales y los 4
ángulos rectos.​

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?