Which element forms the skeleton of this polymer? Analyze the polymer polypropylene.
H H H H
O carbon
H H
Ċ-Ċ-Ċ-Ċ-Ċ-Ċ
CH, H CH, H CH, H
O copper
O hydrogen
O oxygen
0 Tuto

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at