Which Set of Gases Is Listed from Lowest to Highest $\circ$

question 190

Multiple Choice

Which set of gases is listed from lowest to highest root-mean-square speed at 25 ^$\circ$ C?

• A)Kr < CO₂ < NO₂ < SF₆
• B)SF₆ < NO₂ < CO₂ < Kr
• C)SF₆ < Kr < CO₂ < NO₂
• D)SF₆ < Kr < NO₂ < CO₂
• E)CO₂ < NO₂ < Kr < SF₆

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Definitions:

Glass

A hard, brittle substance, typically transparent or translucent, made by fusing sand with soda and lime and cooling rapidly.

Density

Density is a measure of mass per unit volume of a substance, indicating how compact its mass is.

Displaces

Refers to the process by which one substance is replaced by another substance in a chemical reaction, often seen in displacement reactions.

Shard

A piece of broken ceramic, glass, metal, or other hard materials, typically having sharp edges.