## Chemistry and Chemical Reactivity (9th Edition)

Volume of the sample: $52.2-47.5=4.7\ mL=4.7\ cm^3$ Mass of the sample: 23.5 g Density of the sample: $\rho=m/V=5.0\ g/cm^3$ Since its density is closer to fool's gold ($\rho=5.00\ g/cm^3$), the sample is fool's gold.