It looks all correct to me, great job!
The numbers may be off by a few, if you worked it out, since my periodic table is for AP chemistry. Hope this helps!!!
The question asks average kinetic energy. So it is only related with the temperature. The higher temperature is, the higher kinetic energy is. So the answer is (4).
Answer:
in 1983, Lake Mead had a recorded water level of 1,225 feet above sea level. The closest it's been to that level in modern times was in 2000. Explanation:
He was credited with discovering the subatomic particle also known as the electron in 1897.