# The density of gold is 19.3 g/cc (g/ml). If a gold rod has a diameter of 4.20cm and 8.0 cm long. What is the mass?

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1. ### Chemistry

The density of gold is 19.3 g/cc (g/ml). If a gold rod has a diameter of 4.20cm and 8.0 cm long. What is the mass? I just need to know if I did this right... r= 2.1 3.14 x 2.1^2 x 8.0 = 110.835g 19.3 g/cc x 110.835g = 2139.12 g/ml m = 2139.12
2. ### chemistry

silver has density of 10.5 g/cm3 and gold has a density of 193.g/cm3 which liquid is denser silver and gold are liquids? That's news to me. You're given the ratios for density, which ratio is greater 10.5gm/cm^3 or 193gm/cm^3? It appears gold is over 18 times as dense as ...
3. ### Physics

A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 14.8 kg and 1.89 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of the gold in the rock.
4. ### physics

A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.3 kg and 3.56 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of the gold in the rock.
5. ### physics

The British Sovereign coin is an alloy of gold and copper having a total mass of 7.988 g and is 22-karat gold. (a) Find the mass of gold in kg using that # of karats = 24 x (mass of gold)/(total mass). (b) Calculate the volumes of gold and copper used to manufacture the coin...
6. ### Physics

A king's crown is said to be solid gold but may be made of lead and covered with gold. when it is weighed in air, the scale reads 0.475 kg. when it is submerged in water the scale reads 0.437 kg.is it solid gold? if not, what percent is mass is gold? (density of gold= 19.3x10^...

32. ### maths-mensuration

The boy having a gold coin of diameter 2cm and thickess 2mm to a goldsmith for melting and drawing into a wire of diameter 1mm . the gold smith gave back a wire of gold of length 76cm with diameter 1mm. if the wastage allowed in melting could be a maximum of 5% of the total ...
33. ### Thank you Ann (kinematics)

Thank you Ann! I had the equations and really was closing in on the answer... (stopping for 23 s is what really got me confused) in either case, the displacement for a) is 888 m ! Now I'll try to calculate (b). Thank you much! P.S. This is in response to my earlier physics (...
34. ### science

density of gold is 19.32 g/cm^3.A piece of gold leaf is 2.50 cm on each side and 0.100 mm thick,How many atoms of gold are in this piece of gold leaf?
35. ### physics honors

Suppose that pure gold was to be made into a very long, thin wire for high-end stereo systems. (Gold is often used because it does not oxidize so it makes very good electrical contacts). If the gold wire was to have a radius of 0.01 cm, how long of a wire could you make from ...

The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. What is the volume of gold in a 20.0 karat gold necklace whose weight...
37. ### Chemistry

An atom of gold has a mass of 3.271 times 10^-22g. How many atoms of gold are in 5.00g of gold?
38. ### Chemistry

A chemist wants to extract the gold from 15.0g of gold(II) chloride dihydrate, AuCl3 â€¢ 2H20, What mass of gold could be obtained from this sample?
39. ### Chem

Pure gold adopts a face-centered cubic crystal structure. It also has a density of 19.30g/mL. What is the edge length of gold's unit cell? What is the atomic radius of gold? I understand how to do this problem the other way: when you have the unit cell and are looking for the ...
40. ### physics

a piece of gold aluminuim alloy weighs 100g in air and 80g in water.what is the weight of the gold in the alloy if the relative density of gold is 19.3 and that of aluminium is 2.5
41. ### chemistry

At 25 degrees celsius, the dimensions of a rectangular block of gold are 4.42 cm by 3.07 cm by 2.63 cm. The mass of the gold is 689g. I found that the density is 19.3g/cm^3 at 25 degrees but how will the density change if the temperature is increased to 125 degrees?
42. ### chemistry

Archimedes used density along with mass and volume of alloys (mixtures) of gold and silver to determine the percent of gold (and also silver) in these alloys by simple, non-destructive measurements. Prove that the mass of gold in a given mass of silver alloy is given by the ...
43. ### geometry

PLEASE HELP ME! i have this homework due tomorrow and i only have 1 question left and am sooo desperate for an answer: The diameter of the Dome of the Rock in Jerusalem is 20m. If it is plated with gold that is 5cm thick, find the cost of plating the dome in gold given that ...
44. ### refining

If I have a solution of gold chloride, is there a was I can grow metalic gold crystals to recover the gold instead of using sulfer dioxide to drop the gold as poeder?
45. ### physic

The resistivity of gold is at a temperature of 20°C. A gold wire, 1.8 mm in diameter and 14 cm long, carries a current of 480 ma. The power dissipated in the wire is closest to:

64. ### physics

Gold, which has a density of 19.32 g/cm^3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 6.710 g, is pressed into a leaf of 1.661 μm thickness, what is the area (in m^2) of the leaf? (b...
65. ### chemistry

zinc displaces gold in seawater present int he form of gold (III) hydroxide. What mass of gold can be recovered if 20 moles of zinc are available?
66. ### chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used. If the ...
67. ### Chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used. If the ...
68. ### Chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 21.4 g sodium cyanide is used. If the...
69. ### Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium cyanide is used. (b) If...
70. ### Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium cyanide is used. (b) If...
71. ### Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium cyanide is used. (b) If...
72. ### College Algebra

A goldsmith has two gold alloys. The first alloy is 30% gold; the second alloy is 80% gold. How many grams of each should be mixed to produce 50 grams of an alloy that is 68% gold? amount of 30% gold ______grams amount of 80% gold ______grams
73. ### College Chemistry/Lab Math

I think I have this problem figured out correctly, but is there anyone who can tell me if I'm doing something wrong. The question is... "One troy ounce of gold is worth \$380. There are 33.8 grams per troy ounce. You have a stock colloidal solution of a very fine gold dust. It'...
74. ### micro economics

1) Assume that the gold-mining industry is competitive. a) Illustrate a long-run equilibrium using diagrams for the gold market and for the a representative gold mine. b) Suppose that an increase in jewellery demand induces a a surge for in the demand for gold. Using your ...
75. ### algebra

A goldsmith has two gold alloys. The first alloy is 30% gold; the second alloy is 80% gold. How many grams of each should be mixed to produce 10 grams of an alloy that is 40% gold? amount of 30% gold ___ g amount of 80% gold ___ g
76. ### Physics 2

α of gold is 14.3x10^-6/C°. The density of gold is 19.3 g/cm^3 at 20℃. Determine its density at 140℃.
77. ### chemistry

assume the volume of an idol is 1.0L, if it were solid gold, what mass would the idol have? is playing catch with the idol plausable? Density of the gold is 19.32 g/cm3
78. ### chemistry

Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold. Find the mass of the gold salt that forms when a 73.0 -g mixture of equal masses of all three reactants is prepared.
79. ### physical science

A 50.g bracelet is suspected pf being gold plated lead instead of pure gold. It was dropped into a full to the rim glass of water and 4cm to the third power overflowed. Is the the bracelet pure gold. Explain. (Density of gold=19 g/cm to the third power and lead=11 g/cm to the ...
80. ### Physics

The density of a 4.41-m long rod can be described by the linear density function λ(x) = 111 g/m + 12.3x g/m2. One end of the rod is positioned at x = 0 and the other at x = 4.41 m. found total mass of rod to be: 609 grams need help finding : the center-of-mass coordinate...
81. ### Physics

The density of a 4.41-m long rod can be described by the linear density function λ(x) = 111 g/m + 12.3x g/m2. One end of the rod is positioned at x = 0 and the other at x = 4.41 m. found total mass of rod to be: 609 grams need help finding : the center-of-mass coordinate...
82. ### Math

If 241.5 grams of gold has a volume of 12.5 cubic centimeters, what is the density of gold?
83. ### Physic

The density of gold is 19.3 g/ml. If the statue is solid gold, how much does it weight?
84. ### physics

The density of gold is 19.3 x 10^3 kg/m^3. What buoyant force does a .6 kg gold crown experience when it is immersed in water?
85. ### physics

the density of gold is 19.3 x 10^3, what buoyant force does a .60-kg gold crown experience when it is immersed in water?
86. ### physical sciences

If 57.9 grams of gold has a volume of 3 cubic centimeters what is the density of gold in g/ cm3,?
87. ### Earth Science

Silver has a density of 10.5 g/cm cubed, and gold has a density of 19.3 g/cm cubed. Which would have the greater mass, 5cm cubed of silver or 5 cm cubed of gold?
88. ### Chemistry

Gold has a density of 19.3 g/cm3. The thickness of a piece of gold leaf weighing 1.93 mg and covering an area of 14.5 cm2 is? I solved for volume=10000cm3 then I solved for height and got 690cm is the thickness of gold leaf. Can anyone confirm or deny?
89. ### Physical Science

Suppose an all good crown has mass m=3800 grams. Gold has a density of 19 grams/ cm^3. What is the volume of water displaced by a gold crown (in cm^3)? Please help :)
90. ### chemistry

A 9.35 gram of ring with it's volume of 0.654 cm3 is an alloy of gold and with density of gold and silver respectively 19.3 g/cm3 and 10.5 g/cm3 assume there is no change in volume when pure metals are mixed. calculate volume of gold?
91. ### chemistry

A 9.35 gram of ring with it's volume of 0.654 cm3 is an alloy of gold and with density of gold and silver respectively 19.3 g/cm3 and 10.5 g/cm3 assume there is no change in volume when pure metals are mixed. The volume of gold is?
92. ### Algebra

Hello again! I've got two questions I'm stuck on in an algebra worksheet. 1. Solve the equation: 2𝑦 + 5 = 1/2(4𝑦 + 8) (I really don't know how to solve these correctly, I've tried everything.) 2. The density of an object is calculated using the formula 𝐷...
93. ### physics

The density of gold is 1.93×104 {\rm{kg/m}}^{\rm{3}}. 205 {\rm g} of gold is shaped into a cube. whats the length of an edge
94. ### math

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the object's weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. Which ...
95. ### Chemistry;HELP

Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density = -------------- or D = ------- Volume v Adjust the density formula and solve the problems below: m D = ------- Original Formula...
96. ### chemistry

It is observed that when solid copper is added to a solution containing gold ions, the copper dissolves and the gold precipitates. Similarly, almost every other metal will displace gold from solutions of gold salts. a. Do these results mean that the gold ion is an unusually ...
97. ### geography

1)give two properties of gold which makes it an economically valuable mineral 2)what is the difference between gold and an ordinary rock? 3)what is difference between gold mine and gold prospect?
98. ### word problem

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the object's weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. Which ...
99. ### math

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the object's weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. Which ...
100. ### chemistry

the metal gold, with an atomic radius of 144.2pm crystallizes in a face-centered cubic lattice. what is the density of gold?