Me podrían decir la fórmula semidesarrollada de: A) 4-etil-2,3-dimetil decano

B) 3,4-dietil-5-isopropil-2,2-dimetil octano

C) 5-sec-butil-3-etil-4,4,5,6-tetrametil nonano

D) 5-ter-butil-4-etil-3,3,4-trimetil decano

E) 6-etil-4-isopropil-2,3,5,7,8-pentametil undecano

D) Matter becomes more dense as it moves from gas to solid state

A gas expands to fill up the container of whatever shape or size. As it cools to a solid, the molecules get closer together and don't move as much (the molecules still will vibrate and move somewhat even in solid form). So effectively the volume of the object shrinks while the amount of mass stays the same. This is why the density increases when going from gas to solid.