Answer:
The number of atoms are
.
Explanation:
Given that,
Diameter 

Distance = 2.60 cm
We calculate the number of atoms
Using formula of numbers of atoms


Hence, The number of atoms are
.
I would expect it to be slightly basic.
Donald trump is 74 years old
Answer:
distance is meters, time is seconds
Answer: first one is electrochemical
Second one is combustion
Third one is photosynthesis
Fourth one is respiration