# Is a ring whose mass is 52.3*g, and whose volume is 3.52*cm^3 likely to be platinum metal? rho_"platinum"-=21.45*g*cm^-3.

Sep 2, 2017

Well this site quotes the density of platinum as $21.45 \cdot g \cdot c {m}^{-} 3$.
The measured density of the ring is.....$\rho = \text{mass"/"volume}$,
i.e. $\rho = \frac{52.3 \cdot g}{3.52 \cdot c {m}^{3}} = 14.9 \cdot g \cdot c {m}^{-} 3$.