Need a little help with chemistry:)
*If you don’t know, don’t put anything*

29.3

Explanation:

22÷9=2.44444444

2.44444444×12=29.333333333

one state would change   like louisiana to texas. thats a change

explanation:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.