Is a instant cold pack Endothermic or Exothermic reaction? Explain.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Determine type of reaction & predict the product c3h12+o2 =

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?