chemistry
posted by Anonymous
A 9.35 gram of ring with it's volume of 0.654 cm3 is an alloy of gold and with density of gold and silver respectively 19.3 g/cm3 and 10.5 g/cm3 assume there is no change in volume when pure metals are mixed. calculate volume of gold?

DrBob222
mass = volume x density or
vol = mass/density
vol Au + vol Ag = total vol
Let x = mass Au then
9.35x = mass Ag
(x/19.3) + (9.35x)/10.5 = 0.654
Solve for x = mass Au, then
x/19.3 = vol Au.
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