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Chemistry
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Density of gold is 19.31g/cm^3, and density of platinum is 21.43g/cm^3.If equal masses of gold and platinum are transferred to equal volumes of water in separate graduated cylinders, which has greatest volume change.Explain or show sample calculation

Sep 8th, 2014

The idea is Vfinal = VH2O + Vmetal

since m Au = m Pt = "m", we can do this calc

VAu = m x (1 cm³ / 19.3g) = (m / 19.3) cm³

and

VPt = m x (1 cm³ / 21.43g) = (m / 21.43) cm³

since (m / 19.3) > (m / 21.43)

V gold > V platinum

and change in water volume for the cylinder containing gold greater than change in water volume for the cylinder containing platinum

Sep 8th, 2014

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