Chemistry Chemistry Practice Problems Solutions Library

Density Solutions Library

Access 308 Density video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Density learn videos.

Browse Solutions

308 solutions

Density

Q. Estimate the volume, VV, of one sodium atom (Na) using its metallic radius of 186 pm. Express your answer with the appropriate units.If you assume ...

Solved • Jul 2, 2020

Density

Q. Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft × 15.0 ft × 8.50 ftHydrogen cyanide, HCN, is a ...

Solved • Jul 1, 2020

Density

Q. Part A. By varying the mass and volume parameters, determine how the density is affected by the following changes.a. Increasing the mass while keep...

Solved • Jul 1, 2020

Density

Q. Part B. You add 6.6 g iron to 24.00 mL of water and observe that the volume of iron and water together is 24.84 mL. Calculate the density of iron.E...

Solved • Jun 30, 2020

Density

Q. A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 5.8 cm . Its mass is 1.4 kg . Calculate the density of the metal.Density...

Solved • Jun 30, 2020

Density

Q. A particular brand of gasoline has a density of 0.737 g/ mL at 25 °C. How many grams of this gasoline would fill a 15.0 gal tank (1 US gal = 3.78 L...

Solved • Jun 30, 2020

Density

Q. Based on the first and fourth sketches, what is the density of the block?The accompanying sketches suggest four observations made on a small block ...

Solved • Jun 30, 2020

Density

Q. Based on the sketch, you measure that 40% of the block is submerged. Use the first and third sketches to find the density of the block. Express you...

Solved • Jun 30, 2020

Density

Q. Based on the experiments shown in the first two sketches, and , which of the following are valid conclusions?Check all that apply.a. The block will...

Solved • Jun 30, 2020

Density

Q. The density of iron is 7.87 g/mL. What is the mass of a 4.00 cm × 4.00 cm × 1.00 cm block of iron?Express your answer to three significant figures ...

Solved • Jun 30, 2020

Density

Q. Very small crystals composed of 1000 to 100,000 atoms, called quantum dots, are being investigated for use in electronic devices.  (a) A quantum do...

Solved • Jun 30, 2020

Density

Q. Ethyl chloride is sold as a liquid under pressure for use as a local skin anesthetic. Ethyl chloride boils at 12 °C at atmospheric pressure. When t...

Solved • Jun 29, 2020

Density

Q. How can density be used to identify substances?

Solved • Jun 16, 2020

Density

Q. Based on the first and fourth sketches (Figure 4), what is the density of the block?Express your answer with the appropriate units.

Solved • May 1, 2020

Density

Q. Isopropyl alcohol has a density of 0.79 g/mL. How many mL of isopropyl alcohol does it take to get 35.0 grams?

Solved • Mar 18, 2020

Density

Q. Butane (C4H10 ) is the liquid fuel in lighters. How many grams of carbon are present within a lighter containing 7.25 mL of butane? (The density of...

Solved • Mar 17, 2020

Density

Q. Determine the volume of hexane that contains 5.33 x 10 22 molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/m...

Solved • Sep 30, 2019

Density

Q. Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g/mL.A. 298 gB. 1100 gC. 907 gD. 568 gE. 866 g

Solved • Sep 15, 2019

Density

Q. The density of silver is 10.5 g/cm3. If a piece of silver occupies a volume of 63.1 cm3, what is the mass (g) of the piece of silver?A. 663B. 0.445...

Solved • Sep 13, 2019

Density

Q. Determine the mass of an object that has a volume of 88.6 mL and a density of 7.77 g/mL.A) 80.8 g B) 11.4 g C) 688 g D) 0.0877 g E) 96.4 g

Solved • Sep 12, 2019

Density

Q. If the density of a certain spherical atomic nucleus is 1.0 × 1014 g/cm3 and its mass is 2.0 × 10-23 g, what is its radius in cm?

Solved • Aug 29, 2019

Density

Q. What is the mass of 62.0 mL of ethanol? The density of ethanol at room temperature = 0.789 g/mL?

Solved • Aug 7, 2019

Density

Q. Calculate the density of the  2412 Mg nucleus in g/mL, assuming that it has the typical nuclear diameter of 1 × 10–13 cm and is spherical in shape.

Solved • Dec 10, 2018

Density

Q. Benzoic acid, C6H5COOH, melts at 122 oC. The density in the liquid state at 130 oC is 1.08 g/cm3. The density of solid benzoic acid at 15 oC is 1.2...

Solved • Nov 27, 2018

Density

Q. Benzoic acid, C6H5COOH, melts at 122 oC. The density in the liquid state at 130 oC is 1.08 g/cm3. The density of solid benzoic acid at 15 oC is 1.2...

Solved • Nov 27, 2018

Density

Q. Very small semiconductor crystals composed of approximately 1000 to 100,000 atoms, are called quantum dots. Quantum dots made of the semiconductor ...

Solved • Oct 31, 2018

Density

Q. Very small semiconductor crystals composed of approximately 1000 to 100,000 atoms, are called quantum dots. Quantum dots made of the semiconductor ...

Solved • Oct 31, 2018

Density

Q. Very small semiconductor crystals composed of approximately 1000 to 100,000 atoms, are called quantum dots. Quantum dots made of the semiconductor ...

Solved • Oct 31, 2018

Density

Q. Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 310 mg HCN per kilogram of air when inhaled.Calculate the amount of HCN...

Solved • Oct 31, 2018

Density

Q. You are given a cube of silver metal that measures 1.050 cm on each edge. The density of silver is 10.5 g/cm3.Because atoms are spherical, they can...

Solved • Oct 31, 2018

Density

Q. You are given a cube of silver metal that measures 1.050 cm on each edge. The density of silver is 10.5 g/cm3.Using the volume of a silver atom and...

Solved • Oct 31, 2018

Density

Q. The density of liquid NH3 is 0.64 g/mL; the density of gaseous NH3 at STP is 0.0007 g/mL. Explain the difference between the densities of these two...

Solved • Oct 30, 2018

Density

Q. Because zinc has nearly the same atomic radius as copper (d = 8.95 g/cm3 ), zinc atoms substitute for some copper atoms in the many types of brass....

Solved • Oct 30, 2018

Density

Q. A pure diamond has a density of 3.52 g/cm3. Set up a dimensional-analysis equation to find the volume (cm3) of the Hope Diamond that weighs 44.4 ca...

Solved • Oct 25, 2018

Density

Q. 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?

Solved • Oct 25, 2018

Density

Q. What is the density of lithium metal in g/cm3 if a cylindrical wire with a diameter of 2.40 mm and a length of 15.0 cm has a mass of 0.3624 g?

Solved • Oct 25, 2018

Density

Q. When an irregularly shaped chunk of silicon weighing 8.763 g was placed in a graduated cylinder containing 25.00 mL of water, the water level in th...

Solved • Oct 25, 2018

Density

Q. Lignum vitae is a hard, durable, and extremely dense wood used to make ship bearings. A sphere of this wood with a diameter of 7.61 cm has a mass o...

Solved • Oct 25, 2018

Density

Q. Lignum vitae is a hard, durable, and extremely dense wood used to make ship bearings. A sphere of this wood with a diameter of 7.61 cm has a mass o...

Solved • Oct 25, 2018

Density

Q. What is the density of glass in g/cm3 if a sample weighing 27.94 g has a volume of 11.81 cm3 ?

Solved • Oct 25, 2018

Density

Q. What is the density of lead (in g/cm3 ) if a rectangular bar measuring 0.50 cm in height, 1.55 cm in width, and 25.00 cm in length has a mass of 21...

Solved • Oct 25, 2018

Density

Q. Aspirin has a density of 1.40 g/cm3.What is the volume (in cubic centimeters) of an aspirin tablet weighing 2.6×102 mg ?

Solved • Oct 25, 2018

Density

Q. A calibrated flask was filled to the 25.00 mL mark with ethyl alcohol. By weighing the flask before and after adding the alcohol, it was determined...

Solved • Oct 25, 2018

Density

Q. Brass is a copper-zinc alloy.What is the mass in grams of a brass cylinder having a length of 2.02 in. and a diameter of 0.492 in. , if the composi...

Solved • Oct 25, 2018

Density

Q. The element gallium (Ga) has the second largest liquid range of any element, melting at 29.78 oC and boiling at 2204 oC at atmospheric pressure.Wha...

Solved • Oct 25, 2018

Density

Q. A bag of Hersheys Kisses contains the following information:Serving size: 9pieces= 41gramsCalories per serving: 230.Total fat per serving: 13 gThe ...

Solved • Oct 25, 2018

Density

Q. More sulfuric acid (density = 1.8302 g/cm3) is produced than any other chemical-approximately 3.6 x 1011 lb/yr worldwide.What is the volume of this...

Solved • Oct 25, 2018

Density

Q. Which block in the following drawing of a balance is more dense, red or green?

Solved • Oct 25, 2018

Density

Q. The following cylinder contains three liquids that do not mix with one another:water (density=1.0g/mL),vegetable oil (density=0.93g/mL),and mercury...

Solved • Oct 25, 2018

Density

Q. You would like to determine if a set of antique silverware is pure silver. The mass of a small fork was measured on a balance and found to be 85.01...

Solved • Oct 25, 2018

Density

Q. An experiment is performed to determine if pennies are made of pure copper. The mass of 11 pennies was measured on a balance and found to be 26.951...

Solved • Oct 25, 2018

Density

Q. An experiment is performed to determine if pennies are made of pure copper. The mass of 11 pennies was measured on a balance and found to be 26.951...

Solved • Oct 25, 2018

Density

Q. Chloroform, a substance once used as an anesthetic, has a density of 1.483 g/mL at 20 oC.How many milliliters would you use if you needed 8.03 g ?

Solved • Oct 25, 2018

Density

Q. You are beachcombing on summer vacation and find a silver bracelet. You take it to the jeweler and he tells you that it is silver plated and will g...

Solved • Oct 25, 2018

Density

Q. A U.S. 1-cent coin (a penny) has a diameter of 19 mm and a thickness of 1.5 mm. Assume the coin is made of pure copper, whose density and approxima...

Solved • Oct 25, 2018

Density

Q. The U.S. Mint produces a dollar coin called the American Silver Eagle that is made of nearly pure silver. This coin has a diameter of 41 mm and a t...

Solved • Oct 25, 2018

Density

Q. Consider the two spheres shown here, one made of silver and the other of aluminum.What is the mass of the aluminum sphere in kg?

Solved • Oct 25, 2018

Density

Q. Consider the two spheres shown here, one made of silver and the other of aluminum.What is the mass of the silver sphere in kg?

Solved • Oct 25, 2018

Density

Q. Platinum, Pt, is one of the rarest metals. Worldwide annual production is only about 130 tons.Platinum has a density of 21.4 g/cm3. If thieves were...

Solved • Oct 25, 2018

Density

Q. You are asked to determine the mass of a piece of copper using its reported density, 8.96 g/mL, and a 150-mL graduated cylinder. First, you add 105...

Solved • Oct 25, 2018

Density

Q. To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured out a 45-mL sample of the substance. She...

Solved • Oct 25, 2018

Density

Q. To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured out a 45-mL sample of the substance. She...

Solved • Oct 25, 2018

Density

Q. To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured out a 45-mL sample of the substance. She...

Solved • Oct 25, 2018

Density

Q. To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured out a 45-mL sample of the substance. She...

Solved • Oct 25, 2018

Density

Q. To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured out a 45-mL sample of the substance. She...

Solved • Oct 25, 2018

Density

Q. Silicon for computer chips is grown in large cylinders called “boules” that are 300 mm in diameter and 2 m in length, as shown. The density of sili...

Solved • Oct 25, 2018

Density

Q. Silicon for computer chips is grown in large cylinders called “boules” that are 300 mm in diameter and 2 m in length, as shown. The density of sili...

Solved • Oct 25, 2018

Density

Q. Using the mass of the proton 1.0073 amu and assuming its diameter is 1.0x10 - 15 m, calculate the density of a proton in g/cm3.

Solved • Oct 25, 2018

Density

Q. In 2009, a team from Northwestern University and Western Washington University reported the preparation of a new "spongy" material composed of nick...

Solved • Oct 25, 2018

Density

Q. A thief plans to steal a gold sphere with a radius of 28.5 cm from a museum. If the gold has a density of 19.3 g/cm3, what is the mass of the spher...

Solved • Oct 25, 2018

Density

Q. A thief plans to steal a gold sphere with a radius of 28.5 cm from a museum. If the gold has a density of 19.3 g/cm3, what is the mass of the spher...

Solved • Oct 25, 2018

Density

Q. Automobile batteries contain sulfuric acid, which is commonly referred to as "battery acid".Calculate the number of grams of sulfuric acid in 1 gal...

Solved • Oct 25, 2018

Density

Q. A 40-lb container of peat moss measures 14 x 20 x 30 in. A 40-lb container of topsoil has a volume of 1.9 gal{ m gal}.Calculate the average density...

Solved • Oct 25, 2018

Density

Q. A 40-lb container of topsoil has a volume of 1.9 gal{ m gal}.Calculate the average density of topsoil in units of g/cm3.

Solved • Oct 25, 2018

Density

Q. A 40-lb container of peat moss measures 14x20x30 in. A 40-lb container of topsoil has a volume of 1.9 gal{ m gal}.Would it be correct to say that p...

Solved • Oct 25, 2018

Density

Q. A package of aluminum foil contains 50. ft2 of foil, which weighs approximately 8.0 oz. Aluminum has a density of 2.70 g/cm3. What is the approxima...

Solved • Oct 25, 2018

Density

Q. Two spheres of equal volume are placed on the scales as shown.Which one is more dense?

Solved • Oct 25, 2018

Density

Q. The liquid substances mercury (density = 13.6 g/mL), water (1.00 g/mL), and cyclohexane (0.778 g/mL) do not form a solution when mixed; instead, th...

Solved • Oct 25, 2018

Density

Q. Water has a density of 0.997 g/cm3 at 25 oC; ice has a density of 0.917 g/cm3 at  -10 oC.If a soft-drink bottle whose volume is 1.60 L is completel...

Solved • Oct 25, 2018

Density

Q. Water has a density of 0.997 g/cm3 at 25 oC; ice has a density of 0.917 g/cm3 at  -10 oC.If a soft drink bottle whose volume is 1.50L is completely...

Solved • Oct 25, 2018

Density

Q. A 32.70-g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid...

Solved • Oct 25, 2018

Density

Q. A 10.0 cm long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 11.88 ...

Solved • Oct 25, 2018

Density

Q. Gold is alloyed (mixed) with other metals to increase its hardness in making jewelry.Consider a piece of gold jewelry that weighs 9.60 g and has a ...

Solved • Oct 25, 2018

Density

Q. Gold is alloyed (mixed) with other metals to increase its hardness in making jewelry.(a) Consider a piece of gold jewelry that weighs 9.85 g and ha...

Solved • Oct 25, 2018

Density

Q. You are assigned the task of separating a desired granular material, with a density of 3.62 g/cm3, from an undesired granular material that has a d...

Solved • Oct 25, 2018

Density

Q. A copper refinery produces a copper ingot weighing 150 lb.If the copper is drawn into wire whose diameter is 8.50 mm, how many feet of copper can b...

Solved • Oct 25, 2018

Density

Q. An individual suffering from a high cholesterol level in her blood has 245 mg of cholesterol per 100 mL of blood. If the total blood volume of the ...

Solved • Oct 25, 2018

Density

Q. The density of air at ordinary atmospheric pressure and 25 oC is 1.19 g/L. What is the mass, in kilograms, of the air in a room that measures 13.5 ...

Solved • Oct 25, 2018

Density

Q. If the mass of the bar is 104.7 g, how many significant figures should be reported when its density is calculated using the calculated volume?

Solved • Oct 25, 2018

Density

Q. The density of benzene at 15 oC is 0.8787 g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.

Solved • Oct 25, 2018

Density

Q. After the label fell off a bottle containing a clear liquid believed to be benzene, a chemist measured the density of the liquid to verify its iden...

Solved • Oct 25, 2018

Density

Q. An experiment requires 16.0 g of cyclohexane, which has a density of 0.7781 g/mL at 25oC. What volume of cyclohexane should be used?

Solved • Oct 25, 2018

Density

Q. A spherical ball of lead has a diameter of 5.5 cm . What is the mass of the sphere if lead has a density of 11.34 g/cm3? (The volume of a sphere is...

Solved • Oct 25, 2018

Density

Q. Three spheres of equal volume are composed of aluminum (density = 2.70 g/cm3), silver (density = 10.49 g/cm3), and nickel (density = 8.90 g/cm3). L...

Solved • Oct 25, 2018

Density

Q. Three cubes of equal mass are composed of gold (density = 19.32 g/cm3), platinum (density = 21.45 g/cm3), and lead (density = 11.35 g/cm3). List th...

Solved • Oct 25, 2018

Density

Q. A cube of osmium metal 1.500 cm on a side has a mass of 76.31 g at 25 oC.What is its density in g/cm3 at this temperature?

Solved • Oct 25, 2018

Density

Q. The density of titanium metal is 4.51 g/cm3 at 25 oC. What mass of titanium displaces 66.0 mL of water at 25 oC?

Solved • Oct 25, 2018

Density

Q. A sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased out because of its potential to cause cancer, has a mass of 40....

Solved • Oct 25, 2018

Density

Q. Will tetrachloroethylene float on water? (Materials that are less dense than water will float.)

Solved • Oct 25, 2018

Density

Q. Carbon dioxide (CO2) is a gas at room temperature and pressure. However, carbon dioxide can be put under pressure to become a "supercritical fluid"...

Solved • Oct 25, 2018