To determine the density of the rock, follow these steps:
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Calculate the Volume of the Rock:
- Final water level: 70 mL
- Initial water level: 50 mL
- Volume of rock = Final level - Initial level = 70 mL - 50 mL = 20 mL
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Convert Volume to Cubic Centimeters:
- Since 1 mL = 1 cm³, the volume of the rock is also 20 cm³.
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Calculate the Density:
- Density is mass divided by volume:
- Mass of the rock = 100 grams
- Volume of the rock = 20 cm³
- Density = Mass / Volume = 100 grams / 20 cm³ = 5 g/cm³
So, the density of the rock is 5 g/cm³, confirming the given density value.