1. Intro to General Chemistry
Density
1. Intro to General Chemistry
Density - Video Tutorials & Practice Problems
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Get a 10 bullets summary of the topicDensity represents the mass of an object or compound within a given volume.
Understanding Density
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concept
Density
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example
Density Example 1
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Problem
ProblemWhen 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?
A
0.891 g Pb
B
0.522 g Pb
C
0.263 g Pb
D
0.059 g Pb
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PRACTICE PROBLEMS AND ACTIVITIES (46)
- Consider the two spheres shown here, one made of silver and the other of aluminum. (a) What is the mass of eac...
- Consider the two spheres shown here, one made of silver and the other of aluminum. (a) What is the mass of eac...
- (b) Three cubes of equal mass are composed of gold 1density = 19.32 g/cm32, platinum 1density = 21.45 g/cm32, ...
- Consider 20 mL samples of the following liquids. Which sample has the largest mass? (LO 1.9) (a) Water (densi...
- The cylinder contains two liquids that do not mix with one another: water (density = 1.0 g/mL) and vegetable o...
- Which block in each of the following drawings of a balance is more dense, red or green? Explain.
- The following cylinder contains three liquids that do not mix with one another: water (density = 1.0 g/mL), ve...
- (b) Carbon dioxide 1CO22 is a gas at room temperature and pressure. However, carbon dioxide can be put under p...
- (a) A sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased out because of its pot...
- (b) An experiment requires 45.0 g of ethylene glycol, a liquid whose density is 1.114 g>mL. Rather than wei...
- (a) To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured...
- (b) An experiment requires 15.0 g of cyclohexane, whose density at 25 C is 0.7781 g>mL. What volume of cycl...
- (a) After the label fell off a bottle containing a clear liquid believed to be benzene, a chemist measured the...
- The density of air at ordinary atmospheric pressure and 25 C is 1.19 g/L. What is the mass, in kilograms, of t...
- A new penny has a mass of 2.49 g and a volume of 0.349 cm3. Is the penny made of pure copper? Explain your ans...
- What is the density of glass in g/cm3 if a sample weighing 27.43 g has a volume of 12.40 cm3?
- What is the density of lead in g/cm3 if a sample weighing 206.77 g has a volume of 15.50 cm3?
- Glycerol is a syrupy liquid often used in cosmetics and soaps. A 3.25 L sample of pure glycerol has a mass of ...
- A vessel contains 4.67 L of bromine whose density is 3.10 g/cm3. What is the mass of the bromine in the vessel...
- Ethylene glycol (antifreeze) has a density of 1.11 g>cm3. a. What is the mass in g of 417 mL of ethylene gl...
- Aspirin has a density of 1.40 g/cm3. What is the volume in cubic centimeters of an aspirin tablet weighing 250...
- Ethylene glycol (antifreeze) has a density of 1.11 g>cm3. a. What is the mass in g of 417 mL of ethylene gl...
- Gaseous hydrogen has a density of 0.0899 g/L at 0 °C, and gaseous chlorine has a density of 3.214 g/L at the s...
- Acetone (nail polish remover) has a density of 0.7857 g>cm3. a. What is the mass in g of 28.56 mL of aceto...
- A small airplane takes on 245 L of fuel. If the density of the fuel is 0.821 g>mL, what mass of fuel has th...
- Human fat has a density of 0.918 g>cm3. How much volume (in cm3) is gained by a person who gains 10.0 lb o...
- The density of chloroform, a widely used organic solvent, is 1.4832 g/mL at 20 °C. How many milliliters would ...
- More sulfuric acid (density = 1.8302 g/cm3) is produced than any other chemical—approximately 3.6 * 1011 lb/yr...
- Two spheres of equal volume are placed on the scales as shown. Which one is more dense?
- Water has a density of 0.997 g>cm3 at 25 C; ice has a density of 0.917 g>cm3 at -10 C. (a) If a soft-dri...
- A flask containing 11.7 mL of a liquid weighs 132.8 g with the liquid in the flask and 124.1 g when empty. Cal...
- Gold is alloyed (mixed) with other metals to increase its hardness in making jewelry. (b) The relative amount ...
- You are assigned the task of separating a desired granular material with a density of 3.62 g>cm3 from an un...
- When an irregularly shaped chunk of silicon weighing 8.763 g was placed in a graduated cylinder containing 25....
- Answer the following questions. (d) A particular sample of crude oil has a density of 0.85 g/mL. What is the m...
- Answer the following questions. (c) A certain type of wood has a density of 0.40 g/cm3. What is the mass of 1....
- A bag of Hershey's Kisses contains the following information: Serving size: 9 pieces = 41 g Calories per servi...
- Vinaigrette salad dressing consists mainly of oil and vinegar. The density of olive oil is 0.918 g/cm3, the de...
- A calibrated flask was filled to the 25.00 mL mark with ethyl alcohol. By weighing the flask before and after ...
- The density of titanium is 4.51 g>cm3. What is the volume (in cubic inches) of 3.5 lb of titanium?
- An iceberg has a volume of 7655 ft2. What is the mass of the ice (in kg) composing the iceberg (at 0 °C)?
- If a substance has a large mass and a small volume, what can you conclude about it?
- What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?
- What two quantities must be known to calculate the density of a sample of matter?
- What volume of silver metal will weigh exactly 2500.0 g. The density of silver is 10.5 g/cm3.
- If the solid form of most molecules is heavier than the liquid form, why does ice float?