Question

question 12 (0.5 points)
complete the sentence: air pressure in a system increases when
number of particles in the air of the system decreases.
volume (amount of space) decreases in that system.
temperature decreases in that system.

Explanation:

To determine when air pressure increases, we use gas laws (like Boyle's Law, Ideal Gas Law). Boyle's Law states \( P \propto \frac{1}{V} \) (pressure and volume are inversely proportional, at constant temperature and amount of gas). Fewer particles (decreased moles) or lower temperature (per Ideal Gas Law \( PV = nRT \)) would decrease pressure. When volume decreases, pressure increases (inverse relationship).

Answer:

B. volume (amount of space) decreases in that system.