theres no answer beause the cobalt contains 27 atomic number and the atomic mass is 58.9
(A) a cobalt atom contains 27 protons, and most cobalt atoms contain 32 neutrons.
Explanation: just answered the question and that was the correct answer
what is the average time it took the car to travel 0.25 meters?
⇒ 2.23 seconds
what is the average time it took the car to travel 0.50 meters?
⇒ 3.13 seconds