You are designing a new product that requires the use of a stable, nonreactive gas. Which gas would be most suitable?
A. Oxygen, o
B. Fluorine, F
C. Helium, He
D. Hydrogen, H

Argon

Explanation:

just did test and people were confused in comments

hope this helps

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.