Question

which liquid property is defined as the pressure of a gas above a liquid in a closed container? volality viscosity surface tension vapor pressure

Explanation:

The question asks for the liquid property defined as the gas pressure above a liquid in a closed container. Volatility refers to how easily a liquid evaporates, viscosity is a liquid's resistance to flow, surface tension is the cohesive force at a liquid's surface, and vapor pressure is exactly the pressure of the vapor (gas) phase of a liquid in equilibrium with the liquid in a closed container.

Answer:

vapor pressure