Explain the difference between `2 N` and `N_(2)`.

What is the difference between 2N and N_2 ?

Explain the difference between Buna-N and Buna-S.

Explain the difference between Buna-N and Buna -S

Explain the difference between Buna -N and Buna-S .

Explain difference between 2 O, O_2 and O_3 .

The average of numbers N1 and N2 is 17. The average of numbers N2 and N3 is 44. What is the difference between N3 and N1?