had a mass of 44.197 g. He The initial volume of the liquid and the total volume

Question

had a mass of 44.197 g. He The initial volume of the liquid and the total volume of the 4. A prospector found an irregularly shaped solid in a creek bed. The solid placed the solid in a volumetric measuring device containing a liqui was read as 7.30 mL. The solid was completely submerged in the liquid a liquid and solid was read as 9.59 mlL. Calculate the density of the solid. Use a ta your text to identify the solid. 5. The density of pure gold is 19.3g/mL. A gol id" bracelet has a mass of 48.2 g and displaces 3.00 mL of water. Is the bracelet pure gold.

Explanation / Answer

4)

we know that

volume of the rock = volume of ( liquid + solid) - volume of liquid

volume of the rock = 9.59 ml - 7.30 ml

volume of the rock = 2.29 ml

also we know that

1 ml = 1 cm^3

so

volume of the rock = 2.29 cm^3

now

mass of the rock = 44.197 g

now

density of the rock = 44.197 g / 2.29 ml

density of the rock = 19.3 g/ml or 19.3 g/cm3

so

the solid rock might be made of gold

5)

volume of bracelet = volume of water displaced = 3 ml

mass of bracelet = 48.2 g

so

density of bracelet = mass / volume = 48.2 g / 3 ml

density of bracelet = 16.067 g/ml

given that

density of pure gold is 19.3 g/ml

so

the bracelet is not made up of pure gold

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