Practice: When lead levels in blood exceed 0.80 ppm (parts per million) the level is considered dangerous. 0.80 ppm means that 1 million g of blood would contain 0.80 g of Pb. Given that the density of blood is 1.060 kg/cm3, how many grams of Pb would be found in 400.00 mL of blood at 0.620 ppm?
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| Ch.1 Matter and Measurements | 4hrs & 24mins | 0% complete | ||
| Ch.2 Atoms and the Periodic Table | 5hrs & 14mins | 0% complete | ||
| Ch.3 Ionic Compounds | 2hrs & 11mins | 0% complete | ||
| Ch.4 Molecular Compounds | 2hrs & 14mins | 0% complete | ||
| Ch.5 Classification & Balancing of Chemical Reactions | 3hrs & 17mins | 0% complete | ||
| Ch.6 Chemical Reactions & Quantities | 2hrs & 36mins | 0% complete | ||
| Ch.7 Energy, Rate and Equilibrium | 3hrs & 32mins | 0% complete | ||
| Ch.8 Gases, Liquids and Solids | 3hrs & 34mins | 0% complete | ||
| Ch.9 Solutions | 4hrs & 11mins | 0% complete | ||
| Ch.10 Acids and Bases | 3hrs & 30mins | 0% complete | ||
| Ch.11 Nuclear Chemistry | 55mins | 0% complete | ||
| BONUS: Lab Techniques and Procedures | 1hr & 30mins | 0% complete | ||
| BONUS: Mathematical Operations and Functions | 47mins | 0% complete | ||
| Sections | |||
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| What is Chemistry? | 4 mins | 0 completed | Learn |
| The Scientific Method | 9 mins | 0 completed | Learn |
| Classification of Matter | 18 mins | 0 completed | Learn |
| States of Matter | 8 mins | 0 completed | Learn |
| Physical & Chemical Changes | 19 mins | 0 completed | Learn |
| Chemical Properties | 8 mins | 0 completed | Learn |
| Physical Properties | 7 mins | 0 completed | Learn |
| Intensive vs. Extensive Properties | 14 mins | 0 completed | Learn |
| Temperature (Simplified) | 10 mins | 0 completed | Learn |
| Scientific Notation | 14 mins | 0 completed | Learn |
| SI Units (Simplified) | 5 mins | 0 completed | Learn |
| Metric Prefixes | 24 mins | 0 completed | Learn |
| Significant Figures (Simplified) | 11 mins | 0 completed | Learn |
| Significant Figures: Precision in Measurements | 5 mins | 0 completed | Learn |
| Significant Figures: In Calculations | 20 mins | 0 completed | Learn |
| Conversion Factors (Simplified) | 15 mins | 0 completed | Learn |
| Dimensional Analysis | 24 mins | 0 completed | Learn |
| Density | 13 mins | 0 completed | Learn |
| Specific Gravity | 9 mins | 0 completed | Learn |
| Density of Geometric Objects | 19 mins | 0 completed | Learn |
| Density of Non-Geometric Objects | 7 mins | 0 completed | Learn |
Density represents the mass of an object or compound within a given volume.
Understanding Density
Concept #1: Density
Example #1: If the density of an unknown metal is 21.4 g/cm3, express its density in lb/ft3.
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