A rock has a mass of 8.0 grams. When the rock is placed in 30mL of water, the water level is raised to 42 mL. What is the density of the rock?
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intial placement =30ml
final placement =42ml
volume
=[42-30]ml
=12ml
always know that 1ml=1 cm^-3
hence,
density =mass/volume
=8/12 g cm^-3
=0.6 g cm^-3
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