Because, the total number of electrons is equal to the number of protons.
First one is 12^2
second one is 1
Answer:
-2.85
Step-by-step explanation:
I looked it up tbh
567/71 because passengers/(train cars/passengers) = train cars
71 x 7 = 497 (not enough)
71 x 8 = 568 (enough)
Answer: 8 train cars
