To determine the volume occupied by 7.75 g of the same substance, we need to know the density of the substance. Density is defined as the mass per unit volume, and it is expressed in units such as grams per cubic centimeter (g/cm³).

Given the provided values, we need more information or context about the substance in question to accurately calculate its volume. Without knowing the density of the substance, we cannot determine its volume based solely on its mass.