Final answer:
To calculate the density of an object, divide its mass (10.0 g) by its volume (2.5 cm³), which yields a density of 4.0 g/cm³. This result is reported with three significant figures, following the measurements provided.
Step-by-step explanation:
How to Calculate Density
To find the density of an object, you use the formula Density (D) = Mass (m) / Volume (V). Given that an object weighs 10.0 g and occupies a volume of 2.5 cm³, we can calculate its density by dividing the mass by the volume.
Calculation Steps:
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- Identify the mass of the object: 10.0 g.
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- Identify the volume of the object: 2.5 cm³.
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- Use the formula for density: D = m / V.
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- Substitute the given values into the formula: D = 10.0 g / 2.5 cm³.
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- Perform the division to find the density: D = 4.0 g/cm³.
The object has a density of 4.0 g/cm³.
Remember that the result should be expressed with the correct number of significant figures based on the given measurements. In this case, both the mass and volume measurements are given with three significant figures, so our final density value should also be reported with three significant figures.