Question

rank these gases in order of decreasing their average velocities. rank from highest to lowest. to rank items as equivalent, overlap them.• helium • krypton • argon

Answer 1

Step-by-step explanation:

The average velocity of a gas molecule is directly proportional to the square root of its temperature and inversely proportional to its molar mass.

Assuming all gases are at the same temperature, we can rank them based on their molar masses:

1. Helium (atomic mass = 4 g/mol)

2. Krypton (atomic mass = 84 g/mol)

3. Argon (atomic mass = 40 g/mol)

Therefore, the ranking of gases in decreasing order of their average velocities is: helium > krypton > argon.