What is the formula for calculating the latent heat of vaporization?

The formula for calculating the latent heat of vaporization is correctly represented as the product of mass and the latent heat constant. In this context, the latent heat constant refers to the specific latent heat value for the substance being vaporized.

When you multiply mass by this constant, you're effectively determining the total amount of energy required to change the substance from a liquid to a vapor without changing its temperature. This is a crucial concept in thermodynamics and HVAC applications, as understanding the energy transfer involved in phase changes is fundamental for designing efficient systems.

For instance, if you know the mass of water being converted to steam and the latent heat of vaporization for water, you can compute the total energy required for this phase transition. This equation is foundational in HVAC systems for managing thermal loads and understanding energy efficiency.

The other options do not correctly represent the relationship needed to calculate latent heat.