Which two pictures show a change in motion about to occur?
А
B.
D C

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Calculate the ph of a .10m nh4cl solution. the kb value for nh3 is 1.8×10^-5

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?