Practice: A piece of unknown solid weighs approximately 0.045 lbs. When a scientist places it in a glass beaker the water level increases from 200 mL to 260 mL. What is the density of the unknown solid in g/mL?
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| Classification of Matter | 18 mins | 0 completed | Learn Summary |
| Physical & Chemical Changes | 19 mins | 0 completed | Learn Summary |
| Chemical Properties | 9 mins | 0 completed | Learn Summary |
| Physical Properties | 7 mins | 0 completed | Learn |
| Intensive vs. Extensive Properties | 14 mins | 0 completed | Learn |
| Temperature | 12 mins | 0 completed | Learn Summary |
| 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 | 20 mins | 0 completed | Learn |
| Conversion Factors | 16 mins | 0 completed | Learn |
| Dimensional Analysis | 24 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 | 10 mins | 0 completed | Learn |
| Additional Practice |
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| The Scientific Method |
| Filtration |
| Standard Deviation, Mean, Median & Mode |
| Accuracy & Precision |
The density of non-geometric objects can be determined using water displacement.
Calculating Density
Concept #1: Calculate the volume of the water displaced by the submerging of the object. (The volume of the given cylinders are in mL).
Practice: If an irregularly shaped apple possesses a density of 0.96 g/cm3, what is its mass in milligrams? (The volume of the given cylinders are in mL).
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Additional Problems
A student is trying to find out what metal the yard sale ring is made of. The ring, when dropped into a cup of water, displaces 0.5 mL of water. The mass of the ring is 2.2g. Determine the most likely metal that the ring is made from.Metal density (g/ml)Cu 8.96Al 2.70Ti 4.51Fe 7.86Au 19.3Pt 2.4
A titanium bicycle frame displaces 0.314 L of water and has a mass of 1.41 kg. What is the density of the titanium in g/cm3?
A supposedly gold nugget is tested to determine its density. It is found to displace 19.3 mL of water and has a mass of 371 grams. Could the nugget be made of gold?
The density of titanium metal is 4.51 g/cm3 at 25 °C. What mass of titanium displaces 125.0 mL of water at 25 °C?
A sample containing 33.42 g of metal pellets is poured into a graduated cylinder initially containing 12.7 mL of water, causing the water level in the cylinder to rise to 21.6 mL. Calculate the density of the metal.
The density of pure silver is 10.5 g/cm3 at 20°C. If 5.25 g of pure silver pellets is added to a graduated cylinder containing 11.2 mL of water, to what volume level will the water in the cylinder rise?
A sample of 37.5 g of an unknown metal is placed in a graduated cylinder containing water. The levels of the water before and after adding the sample are 7.0 and 20.5 mL respectively. What is the density of this metal in g/L?
Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.A) 11.4 g/mLB) 12.4 g/mLC) 1.38 g/mLD) 18.1 g/mLE) 8.08 g/mL
A sample of unknown metal is placed in a graduated cylinder containing water. The mass of the sample is 37.5 g and the water levels before and after the addition of the sample are shown below. What is the density of the metal sample?
You are given a marble made up of one of the metals listed below. To determine which one, you weigh the marble - it is 32.3 grams - and then drop it in a graduated cylinder containing 50.0 mL of water. The volume of the marble and the water is 53.6 mL. What is the metal?a. Ti (d = 4.54 g/cm3)b. Co (d = 8.90 g/cm3)c. Mg (d = 1.74 g/cm3)d. Al (d = 2.70 g/cm3)e. Ag (d = 10.5 g/cm3)