Chemistry Chemistry Practice Problems Solutions Library

Density Solutions Library

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182 solutions

Density

Q. What is the volume of a sample of NaCl if its mass is 98.5 g? (density of NaCl = 2.16 g/mL)a. 213 mLb. 0.0219 mLc. 27.1 mLd. 1.69 mLe. 45.6 mL

Solved • Feb 5, 2021

Density

Q. Calculate the mass of lead (d = 11.4 g/mL) that has the same volume as a 300.0 g block of aluminum (d = 2.70 g/mL)

Solved • Feb 4, 2021

Density

Q. A student wants to measure out 75.0 g of methanol, but doesn't have access to a balance. However, he does have a graduated cylinder, so what volume...

Solved • Jan 27, 2021

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 A. To save time you can approximate the initial volume of water to ±1 mL and the initial mass of the solid to ±1 g . For example, if you are a...

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. 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. 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. 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. 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. Carbon dioxide, which is recognized as the major contributor to global warming as a "greenhouse gas," is formed when fossil fuels are combusted, as...

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. 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. 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 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. 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. 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. 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. 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. 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 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. 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. 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. 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. 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. 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 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

Density

Q. A flask containing 7.50 mL of a liquid weighs 168.1 g with the liquid in the flask and 160.1 g when empty.Calculate the density of the liquid in g/...

Solved • Oct 25, 2018

Density

Q. A flask containing 15.0 mL of a liquid weighs 128.1 g with the liquid in the flask and 120.1 g when empty.Calculate the density of the liquid in g/...

Solved • Oct 25, 2018

Density

Q. A drop of gasoline has a mass of 25 mg and a density of 0.741 g/cm3 . What is its volume in cubic centimeters?

Solved • Oct 25, 2018

Density

Q. Backpackers often use canisters of white gas to fuel a cooking stove’s burner. If one canister contains 1.75 L of white gas, and the density of the...

Solved • Oct 25, 2018

Density

Q. Is this ring genuine? (Platinum has a density of 21.4 g/cm3.)

Solved • Oct 25, 2018

Density

Q. A woman buys a platinum ring that has a mass of 4.23 g and a volume of 0.198 cm3 . Calculate the density of the ring.

Solved • Oct 25, 2018

Density

Q. Acetone (nail polish remover) has a density of 0.7857 g/cm3.What is the mass, in grams, of 28.62 mL of acetone?

Solved • Oct 25, 2018

Density

Q. Acetone (nail polish remover) has a density of 0.7857 g/cm3.What is the volume, in milliliters, of 6.60 g of acetone?

Solved • Oct 25, 2018

Density

Q. A new penny has a mass of 2.49 g and a volume of 0.349 cm3.Is the penny made of pure copper?

Solved • Oct 25, 2018

Density

Q. Ethylene glycol (antifreeze) has a density of 1.11 g/cm3.What is the mass in g of 426 mL of ethylene glycol?

Solved • Oct 25, 2018

Density

Q. Ethylene glycol (antifreeze) has a density of 1.11 g/cm3.What is the volume in L of 4.1 kg of ethylene glycol?

Solved • Oct 25, 2018

Density

Q. Three samples, each of a different substance, are weighed and their volume is measured. The results are tabulated below. List the substances in ord...

Solved • Oct 25, 2018

Density

Q. Section 1.7 showed that in 1997 Los Angeles County air had carbon monoxide (CO) levels of 15.0 ppm. An average human inhales about 0.50 L of air pe...

Solved • Oct 25, 2018

Density

Q. Nanotechnology, the field of trying to build ultrasmall structures one atom at a time, has progressed in recent years. One potential application of...

Solved • Oct 25, 2018

Density

Q. Substance A has a density of 1.7 g/cm3.Substance B has a density of 1.7 kg/m3.Without doing any calculations, determine which substance is most dense.

Solved • Oct 25, 2018

Density

Q. For each box below, examine the blocks attached to the balances.Based on their positions and sizes, determine which block is more dense (the dark b...

Solved • Oct 25, 2018

Density

Q. For each box below, examine the blocks attached to the balances.The second picture. 

Solved • Oct 25, 2018

Density

Q. For each box below, examine the blocks attached to the balances.The third picture. 

Solved • Oct 25, 2018

Density

Q. What is the mass of a 2.75 L sample of a liquid that has a density of 0.950 g/mL ?

Solved • Oct 25, 2018

Density

Q. A backyard swimming pool holds 180 cubic yards (yd3 ) of water.What is the weight of the water in pounds?

Solved • Oct 25, 2018

Density

Q. An iceberg has a volume of 7655 cubic feet.What is the mass of the ice (in kg) composing the iceberg?

Solved • Oct 25, 2018

Density

Q. The density of titanium is 4.51 g/cm3.What is the volume (in cubic inches) of 3.6 lb of titanium?

Solved • Oct 25, 2018

Density

Q. Glycerol is a syrupy liquid often used in cosmetics and soaps. A 3.25-L sample of pure glycerol has a mass of 4.10 x 103 g. What is the density of ...

Solved • Oct 25, 2018

Density

Q. A small airplane takes on 281 L of fuel.If the density of the fuel is 0.821 g/mL, what mass of fuel has the airplane taken on?

Solved • Oct 25, 2018

Density

Q. Human fat has a density of 0.918 g/cm3.How much volume (in cm3) is gained by a person who gains 11.5 lb of pure fat?

Solved • Oct 25, 2018

Density

Q. What is the difference between density and mass?

Solved • Oct 25, 2018

Density

Q. The density of water at 3.98°C is 1.00000 g/mL. What is the mass in pounds of 17.736 L of water? 

Solved • Oct 23, 2018

Density

Q. Sterling silver is a solid solution of silver and copper. If a piece of a sterling silver necklace has a mass of 105.0 g and a volume of 10.12 mL, ...

Solved • Oct 17, 2018

Density

Q. In the opening scenes of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol from a booby-trapped pedestal. He replaces th...

Solved • Oct 17, 2018

Density

Q. In the opening scenes of the movie  Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol from a booby-trapped pedestal. He replaces t...

Solved • Oct 17, 2018

Density

Q. In each of the following pairs, which has the greater volume?b. 100 g of gold or 100 g of water

Solved • Oct 17, 2018

Density

Q. In each of the following pairs, which has the greater mass? (See Table R‑5.)d. 75 mL of copper or 1.0 L of benzene

Solved • Oct 17, 2018

Density

Q. In each of the following pairs, which has the greater mass? (See Table R‑5.)c. 19.3 mL of water or 1.00 mL of gold

Solved • Oct 17, 2018

Density

Q. Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes leading to irreversible i...

Solved • Oct 17, 2018

Density

Q. Calculate these volumes.(a) What is the volume of 25 g iodine, density = 4.93 g/cm3 ? 

Solved • Oct 16, 2018

Density

Q. Calculate these masses.(b) What is the mass of 25.0 mL octane, density = 0.702 g/cm3 ?

Solved • Oct 16, 2018

Density

Q. Osmium is one of the densest elements known. What is its density if 2.72 g has a volume of 0.121 cm3 ?

Solved • Oct 16, 2018

Density

Q. Calculate the density of aluminum if 27.6 cm3 has a mass of 74.6 g.

Solved • Oct 16, 2018

Density

Q. Liquid nitrogen is obtained from liquefied air and is used industrially to prepare frozen foods. It boils at 77.36 K. At the boiling point, the den...

Solved • Oct 12, 2018

Density

Q. These organic solvents are used to clean compact discs:If a 15.00-mL sample of CD cleaner weighs 11.775 g at 20°C, which solvent does the sample mo...

Solved • Oct 12, 2018

Density

Q. An empty vial weighs 55.32 g. (a) If the vial weighs 185.56 g when filled with liquid mercury (d= 13.53g/cm3), what is its volume? (b) How much wou...

Solved • Oct 12, 2018

Density

Q. The mineral galena is composed of lead(II) sulfide and has an average density of 7.46 g/cm3. (a) How many moles of lead(II) sulfide are in 8.32 ft3...

Solved • Oct 4, 2018