Final answer:
To determine the equilibrium percentage of liquid L at a specific temperature in an alloy with 76% Material B composition, a phase diagram and additional context about the alloy must be used. Without these, it is impossible to provide an answer.
Step-by-step explanation:
If Material B has a 76% weight composition in the alloy, determining the nearest equilibrium percentage of the liquid L at temperature T requires additional information such as a phase diagram or a detailed description of the alloy components.
In alloy phase studies, a phase diagram is needed to analyze at what temperatures and compositions the phases coexist at equilibrium. For most alloys, the equilibrium percentage of any phase at a particular temperature and composition can be read from the phase diagram.
Without a phase diagram or the context of the alloy system, we cannot accurately determine the equilibrium percentage of the liquid phase.
The question is asking about the equilibrium percentage of liquid l at temperature t in an alloy where material b has a 76% weight composition.
To find the equilibrium percentage, we need to consider the overall composition of the alloy. Since material b has a 76% weight composition, the other material (let's call it a) must have a weight composition of 100% - 76% = 24%. Therefore, the nearest equilibrium percentage of the liquid l in the alloy would be 24%.