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

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Answer 1 · 2017-09-02T07:24:15

Well this site quotes the density of platinum as #21.45*g*cm^-3#.

The measured density of the ring is.....#rho="mass"/"volume"#,

i.e. #rho=(52.3*g)/(3.52*cm^3)=14.9*g*cm^-3#.

Given that density is a fundamental property of pure solids and pure liquids, it seems unlikely that we have got a lump of platinum.

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#.