Multiple choice

Which of the following is the measure of the amount of gas a surface contains?

  1. Substrate

  2. Exposure

  3. Coverage

  4. Adsorption

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is a measure of the amount of gas which a surface contains; more specifically, it is the product of the pressure and time of exposure (normal unit is the Langmuir, where 1 L = 10-6 Torr s).