Answer:
For O: atomic number = 8 # neutrons = 8
For Al: atomic mass = 27, # electrons = 13
Helium at room temperature is Gaseous
hope that helps
Answer:
A
Explanation:
Ball bounces because of the difference in the air pressure on the outside of the ball, and opposite the point of impact, and the pressure inside of the ball. This means that the inside of the ball now has less space to contain the air molecules contained inside the ball, increasing the pressure inside the ball.
Answer:
A-Shape
C-state
Explanation:
reactivity and flammability are both indicators of chemicals changes
72.0726 is the percent for carbon