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Density of Geometric Objects Solutions Library

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Density of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

Q. Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 fm (femtometers) and the radius of the atom is approxim...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons. Assuming that a neutron star has the same density as a neutr...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons.Assume the radius of a neutron to be approximately 1.0 10 - 1...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 fm (femtometers) and the radius of the atom is approxim...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Find the radius (r) of an aluminum cylinder that is 2.20 cm long and has a mass of 12.6 g . For a cylinder, V =r2l. (The density of aluminum is 2.7...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A metal cube has an edge length of 11.4 mm and a mass of 6.67 g .Density of Common Substancesat 20 oCSubstanceDensity(g/cm3)Charcoal (from oak)0.57...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A metal cube has an edge length of 11.4 mm and a mass of 6.67 g .Density of Common Substancesat 20 oCSubstanceDensity(g/cm3)Charcoal (from oak)0.57...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Find the density, in g/cm3, of a metal cube with a mass of 52.6 g and an edge length (l) of 2.65 cm . For a cube, V= l3.

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A thief uses a can of sand to replace a solid gold cylinder that sits on a weight-sensitive, alarmed pedestal. The can of sand and the gold cylinde...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A thief uses a can of sand to replace a solid gold cylinder that sits on a weight-sensitive, alarmed pedestal. The can of sand and the gold cylinde...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Approximate the percent increase in waist size that occurs when a 150-lb person gains 35.0 lb of fat. Assume that the volume of the person can be m...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A solid metal sphere has a radius of 3.61 cm and a mass of 1.760 kg . What is the density of the metal in g/cm3? (The volume of sphere is large{V =...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass of our sun, but occupying less space than our mo...

Solved • Oct 25, 2018

Density of Geometric Objects

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 of Geometric Objects

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 of Geometric Objects

Q. Liquid nitrogen has a density of 0.808 g/mL and boils at 77 K. Researchers often purchase liquid nitrogen in insulated 177 L tanks. The liquid vapo...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Mercury is often used as an expansion medium in a thermometer. The mercury sits in a bulb on the bottom of the thermometer and rises up a thin capi...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. The single proton that forms the nucleus of the hydrogen atom has a radius of approximately 1.0x10- 13 cm. The hydrogen atom itself has a radius of...

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A steel cylinder has a length of 2.16 in, a radius of 0.22 in, and a mass of 41 g.What is the density of the steel in g/cm3?

Solved • Oct 25, 2018

Density of Geometric Objects

Q. A solid aluminum sphere has a mass of 86 g .Use the density of aluminum to find the radius of the sphere in inches.

Solved • Oct 25, 2018

Density of Geometric Objects

Q. Part A A package of aluminum foil contains 50, ft2 of foil, which weighs approximately 8.5 oz. Aluminum has a density of 2.70 g/cm3. What is the ap...

Solved • Oct 23, 2018

Density of Geometric Objects

Q. The radius of a neon atom is 69 pm, and its mass is 3.35 x 10-23 g. What is the density of the atom in grams per cubiccentimeter (g/cm3)? Assume th...

Solved • Oct 17, 2018

Density of Geometric Objects

Q. Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter = 6.304 x 10−3 in) can be produced from the copper in 5.01 lb of co...

Solved • Oct 10, 2018

Density of Geometric Objects

Q. A steel ball-bearing with a circumference of 32.5 mm weighs 4.20 g. What is the density of the steel in g/cm3 (V of a sphere = 4/3 πr3 ; circumfere...

Solved • Oct 9, 2018

Density of Geometric Objects

Q. A small cube of aluminum measures 15.6 mm on a side and weighs 10.25 g. What is the density of aluminum in g/cm3?

Solved • Oct 9, 2018

Density of Geometric Objects

Q. Hydrogen cyanide, HCN, is a poisonous gas. The ethal dose is approximately 300 mg HCN per kilogram of air when inhaled. The density of air at 26°C ...

Solved • Oct 9, 2018

Density of Geometric Objects

Q. A granite sample has a density of 2.67 g/cm3. What is the mass of a granite block that measures 3.50 cm x 5.00 cm x 7.25 cm? (a) 345 g (b) 334 g (c...

Solved • Sep 26, 2018

Density of Geometric Objects

Q. You need to determine the diameter of a piece of copper wire in mm. The wire is 1.445 g. The density of copper is 8.933 g/cm3.What is the diameter ...

Solved • Sep 24, 2018

Density of Geometric Objects

Q. The density of titanium metal is 4.51 g/cm3. A cube of titanium has a mass of 62.00 kilograms. Calculate the length of each side of the cube in inc...

Solved • Sep 18, 2018

Density of Geometric Objects

Q. A 1.00-μm thick layer of gold is plated on a medallion that is 4.00 cm in diameter and 2.00 mm thick. What is the volume (cm3) of gold plated? If t...

Solved • May 27, 2018

Density of Geometric Objects

Q. A metallurgist wants to gold-plate a surface with the following dimensions: 2.5 in x 6.5 in. The gold plating must be 0.0010 in thick. How many gra...

Solved • May 21, 2018

Density of Geometric Objects

Q. The density of iron is 7.87g/ml . What is the mass of a 5.00 cm * 4.00cm * 1.00cm block of iron?

Solved • Apr 3, 2018

Density of Geometric Objects

Q. Titanium metal, density of 4.54 g/cm3, is used to make golf clubs. A rectangular bar of titanium which weighs 45.7 g measures 1.84 cm in length and...

Solved • Nov 10, 2017

Density of Geometric Objects

Q. If a box measuring 16.80 cm x 14.12 cm x 29.44 cm has a mass of 871 g at a given temperature, what is the density?A. 0.0105 g/cm3B. 0.125 g/cm3C. 5...

Solved • Jun 29, 2017

Density of Geometric Objects

Q. A certain cylinder has a diameter of 5.0 in and a height of 5 in. Calculate the volume (in cubic centimeters) of the cylinder. (Vcylinder = π r 2h)...

Solved • Jun 26, 2017

Density of Geometric Objects

Q. A rectangular wooden block, 22 cm x 13.2 cm x 4.4 cm, has a mass of 1562.0 g. The density of the wood in kg/m3 is:A) 1.2 x 10-1 kg/m3B) 1.2 x 102 k...

Solved • Jun 19, 2017

Density of Geometric Objects

Q. An aluminum sphere contains 8.55 x 10 22 aluminum atoms. What is the sphere's radius in centimeters? The density of aluminum is 2.70 g/ cm3. Recall...

Solved • Sep 22, 2016

Density of Geometric Objects

Q. A cube of aluminum metal contains 3.35 x 1023 atoms. The density of aluminum is 2.70 g/cm3. What is the length of the edge of the cube? Recall, vol...

Solved • Sep 20, 2016

Density of Geometric Objects

Q. The estimated mass of the planet Jupiter is 1.90 × 10 27 kg and the density is believed to be 1.34 g/cm3. If Jupiter were a perfect sphere, what wo...

Solved • Sep 14, 2016

Density of Geometric Objects

Q. A gold ingot weighs 5.50 lbs. If the density of gold is 19.31 g/cm 3, and the length and width of the ingot are 12.0 cm and 3.00 cm respectively, w...

Solved • Sep 14, 2016

Density of Geometric Objects

Q. A sheet of copper is 18.0 in x 7.00 in and a mass of 0.0318 g. Given that the density of copper is 8.96 g/cm3. What is the thickness of the copper ...

Solved • Aug 22, 2016

Density of Geometric Objects

Q. An osmium sphere contains 1.289 x 10 23 osmium atoms and has a radius 0.755 cm. The molar mass of osmium is 190.23 g•mol-1. What is the density of ...

Solved • Aug 9, 2016

Density of Geometric Objects

Q. The density of osmium is reported by one source to be 22610 kg/m3. What is this density in g/cm3? What is the mass of a block of osmium measuring 1...

Solved • Jul 19, 2016

Density of Geometric Objects

Q. A copper wire (density = 8.96 g/cm3) has a diameter of 0.25 mm. If a sample of this copper wire has a mass of 22 g, how long is the wire?

Solved • Jul 18, 2016

Density of Geometric Objects

Q. The density of osmium (the densest metal) is 22.57 g/cm3. If a 1.00-kg rectangular block of osmium has two dimensions of 4.00 cm x 4.00 cm, calcula...

Solved • Jul 18, 2016

Density of Geometric Objects

Q. A rectangular block has dimensions 2.9 cm x 3.5 cm x 10.0 cm. The mass of the block is 615.0 g. What are the volume and density of the block?

Solved • Jul 18, 2016

Density of Geometric Objects

Q. A star is estimated to have a mass of 2 x 1036 kg. Assuming it to be a sphere of average radius 7.0 x 105 km, calculate the average density of the ...

Solved • Jul 18, 2016

Density of Geometric Objects

Q. For a material to float on the surface of water, the material must have a density less than that of water (1.0 g/mL) and must not react with the wa...

Solved • Jul 18, 2016

Density of Geometric Objects

Q. A material will float on the surface of a liquid if the material has a density less than that of the liquid. Given that the density of water is app...

Solved • Jul 18, 2016

Density of Geometric Objects

Q. A copper refinery produces a copper ingot weighing 150 lb. If the copper is drawn into wire whose diameter is 7.50 mm, how many feet of copper can ...

Solved • Jul 4, 2016

Density of Geometric Objects

Q. A copper refinery produces a copper ingot weighing 150 lb. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can ...

Solved • Jul 4, 2016

Density of Geometric Objects

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 • Jun 30, 2016

Density of Geometric Objects

Q. A cylindrical rod formed from silicon is 16.8 cm long and has a mass of 2.17 kg. The density of silicon is 2.33 g/cm3. What is the diameter of the ...

Solved • Jun 30, 2016

Density of Geometric Objects

Q. A spherical ball of lead has a diameter of 5.0 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 • Jun 30, 2016

Density of Geometric Objects

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

Solved • Jun 30, 2016

Density of Geometric Objects

Q. (a) Three spheres of equal size are composed of aluminum (density = 2.70 g/cm 3), silver (density = 10.49 g/cm3), and nickel (density = 8.90 g/cm3)...

Solved • Jun 28, 2016

Density of Geometric Objects

Q. A cylindrical tube has a length that is 15.2 cm and is filled with bromine liquid. If the mass of the bromine is 112.3 g and has a density of 25.3 ...

Solved • May 26, 2016

Density of Geometric Objects

Q. Neutron stars are composed of solid nuclear matter, primarily neutrons. Assume the radius of a neutron is approximately 1.0 x 10–13 cm, and calcula...

Solved • May 23, 2016

Density of Geometric Objects

Q. Lead metal can be extracted from a mineral called galena, which contains 86.6% lead by mass. A particular ore contains 68.5% galena by mass. If the...

Solved • May 20, 2016

Density of Geometric Objects

Q. The single proton that forms the nucleus of the hydrogen atom has a radius of approximately 1.0 X 10-13 cm. The hydrogen atom itself has a radius o...

Solved • May 20, 2016

Density of Geometric Objects

Q. A steel cylinder has a length of 2.16 in, a radius of 0.22 in, and a mass of 41 g. What is the density of the steel in g/cm3?  

Solved • May 20, 2016

Density of Geometric Objects

Q. A thief uses a can of sand to replace a solid gold cylinder that sits on a weight-sensitive, alarmed pedestal. The can of sand and the gold cylinde...

Solved • May 20, 2016

Density of Geometric Objects

Q. How many 1-cm cubes would it take to construct a cube that is 4 cm on edge? 

Solved • May 20, 2016

Density of Geometric Objects

Q. How many 1 -cm squares would it take to construct a square that is 1 m on each side?

Solved • May 20, 2016

Density of Geometric Objects

Q. The proton has a radius of 1.0 x 10 -13 cm and a mass of 1.7 x 10 -24 g. Determine the density of a proton for a sphere. Volume is equal to (4/3) π...

Solved • Feb 11, 2016

Density of Geometric Objects

Q. The density of gold is 19.31 g/cm 3. A rectangular bar of gold has a mass of 66.75 g and measures 3.04 cm width and 25.5 cm in height. What is the ...

Solved • Feb 11, 2016

Density of Geometric Objects

Q. An aluminum sphere contains 8.66 x 1022 aluminum atoms. What is the sphere’s radius in centimeters? The density of aluminum is 2.70 g/cm3 . Recall ...

Solved • Feb 11, 2016