64. Iron pyrite is often called “fool’s gold” because it looks like gold (see page 12). Suppose you have a solid that looks like gold, but you believe it to be fool’s gold. The sample has a mass of 23.5 g. When the sample is lowered into the water in a graduated cylinder (see Study Question 63), the water level rises from 47.5 mL to 52.2 mL. Is the sample fool’s gold (d = 5.00 g/cm3) or “real” gold (d = 19.3 g/cm3)?
64. Iron pyrite is often called “fool’s gold” because it looks
like gold (see page 12). Suppose you have a solid that
looks like gold, but you believe it to be fool’s gold. The
sample has a mass of 23.5 g. When the sample is
lowered into the water in a graduated cylinder (see
Study Question 63), the water level rises from 47.5 mL
to 52.2 mL. Is the sample fool’s gold (d = 5.00 g/cm3)
or “real” gold (d = 19.3 g/cm3)?
The volume of a given liquid is defined as the amount of the space occupied by the liquid that fully spreads to fill the storage place in which it is kept. The mass present per unit volume is known as density.
Mass of the sample is 23.5 g
Initial water level is 47.5 mL
Final water level is 52.2 mL
Density of fool’s gold is 5.00 g/cm3
Density of real gold is 19.3 g/cm3
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