Final answer:
The volume of a substance that 7.75 g would occupy is calculated using the formula Volume = Mass / Density. Given a density of 2.70 g/cm³, the volume is 2.87 cm³ after rounding to the correct number of significant figures.
Step-by-step explanation:
The student is asking about the volume that would be occupied by 7.75 g of a substance. To find the volume, we use the formula Volume = Mass / Density. We need the density of the substance which was provided in a previous problem as 2.70 g/cm³. Using the formula:
Volume = 7.75 g / 2.70 g/cm³ = 2.87037037 cm³
However, in order to give our answer with the proper number of significant figures, which is three in this case (based on the given density), we round our answer to 2.87 cm³. Therefore, none of the given options A, B, C, or D are correct. Correct option would be E. 2.87 cm³ if it were available.