Question

a 50 g bracelet is suspected of being gold plated lead instead of pure gold.when it is dropped into a full glass of water,4cm of water overflows.is the bracelet pure gold?if not,what proportions of its mass is gold?determine also the amount of its materials are used:

Answer 1

depends on the dimensions of the glass.

Answer 2

using 4 cm^3

the density is ... 50g / 4 cm^3
... 12.5 g/cm^3

this is between lead (11.3 g/cm^3)
... and gold (19.3 g/cm^3)

gold plated lead is a good guess

G = fraction gold

19.3 G + 11.3 (1 - G) = 12.5

Answer 3

Not satisfied