Question

Check all actions that change the constant k.

leaking air from the syringe

changing the number of gas molecules

changing the temperature

changing the pressure

changing the volume

Answer 1

Answers to check:
- leaking air from the syringe
- changing the number of gas molecules
- changing the temperature

Why: for an ideal gas pV = k = nRT. k depends only on the amount of gas n and the temperature T (R is constant). Leaking air or changing the number of molecules changes n; changing temperature changes T — all change k. Changing pressure or changing volume by themselves (with n and T held fixed) does not change k because p and V adjust so that pV stays equal to nRT.