If Calcium lost two electrons, it would have the same number of electrons as Argon which has 18 electrons.
You can't see beyond a blind turn, so a mirror would allow you to see around the corner.
Answer:
A. 112 J
Explanation:
KE = ½mv² = ½(0.14)40² = 112 J
Answer
A thin atmosphere does not supply much oxygen, and the heat from the sun would evaporate it, because mercury is close to the sun.
