The density of the substance is 12.5 g/cm^3.
The upthrust of a body is the upward force exerted on the body by a fluid. We have the following information in the question;
weight in air = 0.100 N
Weight in water = 0.092 N
Upthrust = weight in air - weight in water
Upthrust = 0.100 N - 0.092 N = 0.008 N
Now;
Relative density = weight in air/ upthrust = 0.100 N/0.008 N = 12.5
Hence the density of the substance is 12.5 g/cm^3.
Learn more about upthrust: https://brainly.com/question/22561277
