Practice: A copper wire (density = 8.96 g/cm3) has a diameter of 0.32 mm. If a sample of this copper wire has a mass of 21.7 g, how long is the wire?
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| Classification of Matter | 15 mins | 0 completed | Learn Summary |
| Physical & Chemical Changes | 19 mins | 0 completed | Learn Summary |
| Chemical Properties | 8 mins | 0 completed | Learn Summary |
| Physical Properties | 7 mins | 0 completed | Learn |
| Intensive vs. Extensive Properties | 14 mins | 0 completed | Learn |
| Temperature | 13 mins | 0 completed | Learn |
| Scientific Notation | 14 mins | 0 completed | Learn |
| SI Units | 8 mins | 0 completed | Learn |
| Metric Prefixes | 24 mins | 0 completed | Learn Summary |
| Significant Figures | 10 mins | 0 completed | Learn Summary |
| Significant Figures: Precision in Measurements | 8 mins | 0 completed | Learn |
| Significant Figures: In Calculations | 15 mins | 0 completed | Learn |
| Conversion Factors | 16 mins | 0 completed | Learn |
| Dimensional Analysis | 21 mins | 0 completed | Learn |
| Density | 13 mins | 0 completed | Learn Summary |
| Density of Geometric Objects | 19 mins | 0 completed | Learn |
| Density of Non-Geometric Objects | 8 mins | 0 completed | Learn |
The density of geometric objects generally includes spheres, cubes and cylinders.
Calculating Density
Concept #1: When given the mass of a geometric object you can relate it to its volume and density.
Example #1: The density of silver is 10.5 g/cm3. What is the mass (in kilograms) of a cube of silver that measures 0.56 m on each side?
Practice: If the density of a certain spherical atomic nucleus is 1.0 x 1014 g/cm3 and its mass is 3.5 x 10-23 g, what is the radius in angstroms? (Å= 10−10 m)
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