# 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

9,897 questions
1. ## Physics

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

asked by Sarah on November 8, 2010
2. ## Physics

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

asked by Mary on April 5, 2007
3. ## Physics, still don't get it!

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

asked by Mary on April 9, 2007
4. ## Chemistry

A street merchant is trying to sell you a 14 karat (24 karat is 100% pure) bracelet for \$450. The gold is alloyed with copper. Before buying the item, you weigh it to be 110 grams and you also measure its water displacement as 7.59 mL. What is the %

asked by Kid on January 28, 2018

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

asked by Mary on April 9, 2007
6. ## Algebra

The purity of gold is measured in karats. Twenty-four karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16-karat gold jewelry has a mass of 30 grams and another piece of 10-karat gold jewelry has a mass of 40 grams. Find the

asked by Laur on January 26, 2011
7. ## Algebra 2

The purity of gold is measured in karats. Twenty-four karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16-karat gld jewelry has a mass of 30 grams and another piece of 10-karat gold jewelry has a mass of 40 grams. Find the number

asked by Jay on January 30, 2011
8. ## Algebra 1

To find the weight of the gold in a 22 karat gold object, multiply the objects weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the objects weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh

asked by Ms. Liz on October 13, 2014
9. ## 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

asked by Kymy on October 22, 2014
10. ## 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 gold in a 14 karat gold object, multiply the object's weight by 0.583. Part 1 Which contains more gold, a 22 karat gold object or a 14

asked by Sasha on October 23, 2017
11. ## 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

asked by Kymy on October 21, 2014
12. ## 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 gold in a 14 karat gold object, multiply the object's weight by 0.583. Part 1 Which contains more gold, a 22 karat gold object or a 14

asked by Sasha on October 23, 2017
13. ## 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

asked by Kymy on October 21, 2014
14. ## 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

asked by Kymy on October 21, 2014
15. ## what is the difference

what is the difference between 14kt gold and 14k gold and what one is the better gold Both are the same thing Thank you for using the Jiskha Homework Help Forum. In addition to the answer you already have, look what might happen if you don't distinguish

asked by tom on February 26, 2007

A form of 18 karat white gold contains 75% gold and 25% palladium. What type of solution is this? Specify which element is the solute and which is the solvent. help???

asked by tim on April 6, 2016
17. ## math

jewelry marked 14 karat gold is 14/25 pure gold. what is the percent

asked by anynomous on February 11, 2013
18. ## math

jewelry marked 14 karat gold is 14/24 pure gold. what is the percent

asked by Joseph on February 11, 2013
19. ## chemistry

A 14 karat gold alloy contains 58% m/m gold. How much of this alloy can a jeweler make using 50.0 g of pure gold?

asked by Bonnie on December 15, 2014
20. ## 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

asked by anon on February 4, 2013
21. ## science

what is the karat count of gold in a bracelet that contains 15 grams of gold and 5 grams of silver

asked by demarco on May 13, 2008
22. ## Chemistry

1. The eleent gold, Au, has a face-centered cubic structure. (Density - 19.3 g/cm^3) (a) What are the # of gold atoms in 1 unit cell? (b) What are the # of unit cells in 1 mol? (c) What is the volume of 1 mol gold unit cells? (d) What is the volume of 1

asked by Supriya on November 8, 2014
23. ## Science: Chemistry

1. The element gold, Au, has a face-centered cubic structure. (Density - 19.3 g/cm^3) (a) What are the # of gold atoms in 1 unit cell? (b) What are the # of unit cells in 1 mol? (c) What is the volume of 1 mol gold unit cells? (d) What is the volume of 1

asked by Supriya on November 8, 2014
24. ## problem solving

You purchased 18 karat gold chain that weights 15 grams. How much gold did you purchase in grams? In carats? (1 carat=0/2 grams)

asked by ben on December 11, 2012
25. ## 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

asked by Em on April 15, 2015
26. ## physics

A horizontal pipe of uniform cross sectional area A empties into a bucket, filling it at a rate R (unit volume per unit time). Use dimensional analysis to determine the speed,v, of the fluid in the pipe to within a dimensionless multiplicative constant of

asked by Yea on September 20, 2014
27. ## chemistry

Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm. What is the radius of a gallium atom? The face-centered gold crystal has an edge length of 407 pm. Based on the unit cell, calculate the density of gold.

asked by ea on November 24, 2008
28. ## Math

1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.(12:30) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.(30:45) D.(24/32) 3.what is the

asked by Help I need somebody not just anybody on February 6, 2017
29. ## Chemistry

Gold crystallizes in a face centered cubic structure. Using only a periodic table for refrence, determine the edge length of a gold unit cell. Show all Work.

asked by Josh on February 21, 2010
30. ## Statistics:Two Sample Population Proportion Signif

Two Sample Population Proportion Significance Tests: A historian examining British Colonial records for the Gold Coast in Africa suspects that the death rate was higher among African miners than among European miners. in the year 1936, there were 341

asked by Carma on September 11, 2007
31. ## MATH

One particle(atom) of gold weight 197 atomic mass units. One atomic mass unit is approximately 1.6601 x 10^-24 grams. How many particles of gold are there in 197 grams of gold? Use scientific notation where and when appropriate.

asked by JOHN DUNN on May 7, 2014
32. ## Math 7 - NYS Math Exam Review - Book 1 (HW)

C = 2nr!?!??!??! Since the NYS Math Exam is coming up (in my district in my school we have it next week). You see in my class were not done with our geometry and ratio, proportion unit and plus we are missing one unit: algebra. We didn't get to solving the

asked by Laruen on April 13, 2012
33. ## Chemistry physics

3.25x10-3 kg of gold is deposited onto the negative electrode of an electrolytic cell in a period of 2.78 hours, what is the current through this cell in amperes? Assume that the gold ions carry one elementary unit of charge

asked by Bill on March 31, 2015
34. ## Physics

If 3.25x10-3 kg of gold is deposited onto the negative electrode of an electrolytic cell in a period of 2.78 hours, what is the current through this cell in amperes? Assume that the gold ions carry one elementary unit of charge

asked by Bill on March 31, 2015
35. ## Physics

If 3.25x10-3 kg of gold is deposited onto the negative electrode of an electrolytic cell in a period of 2.78 hours, what is the current through this cell in amperes? Assume that the gold ions carry one elementary unit of charge

asked by Blah on December 10, 2012
36. ## Physics

If 3.25x10-3 kg of gold is deposited onto the negative electrode of an electrolytic cell in a period of 2.78 hours, what is the current through this cell in amperes? Assume that the gold ions carry one elementary unit of charge

asked by Blah on December 10, 2012
37. ## Physics

Rutherford, Geiger, and Marsden (his students) fired a beam of alpha particles at a gold foil. The alpha particles had an energy of about 3.6 million electron volts, a charge of +2e, and a mass of about four AMU (one Atomic Mass Unit is 1.66 x 10-27 kg.

asked by Youssef on February 10, 2013
38. ## Science

How many number of gold atom are present in 0.6 gm of 18 carat gold.The 24 carat gold is taken as 100% pure gold.(atomic mass of gold=197a.m.u)

asked by Mole concept on April 20, 2015
39. ## 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

asked by James on March 17, 2013
40. ## 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?

asked by art on February 12, 2012
41. ## Chemistry 101

If gold sells today for 1625 per ounce, and a large mining truck hauls 400 tons of gold ore, what is the value of the gold in each truck if each ton of gold ore contains 1.0 ounces of gold? Use dimensional analysis.

asked by Lilly on February 25, 2016
42. ## Chemistry 101

If gold sells today for 1625 per ounce, and a large mining truck hauls 400 tons of gold ore, what is the value of the gold in each truck if each ton of gold ore contains 1.0 ounces of gold? Use dimensional analysis.

asked by Lilly on February 25, 2016
43. ## Science-Chemistry

A student has blocks of four different materials of identical mass. The materials are ice, gold, aluminum, and Styrofoam. Which blocks would have the largest volume? Would it be gold? Also this other question: What is the total number of atoms in a single

asked by Sara on April 27, 2010
44. ## physics

Ok, let's use the following information to very roughly estimate the size of the nucleus. Rutherford, Geiger, and Marsden (his students) fired a beam of alpha particles at a gold foil. The alpha particles had an energy of about 3.70 million electron volts,

asked by Anonymous on January 31, 2014
45. ## physics

Ok, let's use the following information to very roughly estimate the size of the nucleus. Rutherford, Geiger, and Marsden (his students) fired a beam of alpha particles at a gold foil. The alpha particles had an energy of about 3.70 million electron volts,

asked by Anonymous on January 31, 2014
46. ## math

The amount of gold jewelry and other products is measured in karats (K), where 24K represents pure gold. The mark 14K on a chain indicates that the ratio between the mass of the gold in the chain and the mass of the chain is . If a gold ring is marked 18K

asked by kirk on March 17, 2010

The amount of gold jewelry and other products is measured in karats (K), where 24K represents pure gold. The mark 14K on a chain indicates that the ratio between the mass of the gold in the chain and the mass of the chain is 14:24 If a gold ring is marked

asked by debbie on October 18, 2009
48. ## chem

How many gold atoms are in an 0.408 ounce, 18 gold bracelet? (18 gold is 75% gold by mass.)

asked by tiffany on September 19, 2011
49. ## 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?

asked by Sarah on May 6, 2012
50. ## 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

asked by Anonymous on October 30, 2013
51. ## 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?

asked by kila on July 28, 2010
52. ## Chemistry

You observe that when copper is added to a soltion 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 observations mean that gold ion is a

asked by Dani on October 20, 2011
53. ## CHEM

Info: The atoms of crystalline solid pack together into a three-dimensional array of many small repeating units called unit cells. The simplest of the unit cells are those that have cubic symmetry, with atoms positioned at the corners of a cube. Atoms can

asked by K on November 29, 2007
54. ## CHEMISTRYYYY HELP

A sample of gold ore contains 22.0 g of gold metal per 100kg of ore. If gold has a market value of \$350.00 per oz., what mass of ore, in tons, must be refined to get one million dollars worth of pure gold?

asked by Andrea on September 26, 2011
55. ## statistics

Dr. Snyder teaches a large introductory statistics course. In the past, the proportion of students that receive a grade of A is 0.20. The proportion that receives a B is 0.30. The proportion that receives a C is 0.30. The proportion that receives a D is

asked by Anonymous on April 20, 2012
56. ## English

Which accurately describes the experience of gold seeker traveling to the Klondike? a. most gold seekers travel the whole distance by water b. about half of the gold seekers complete the journey to the Klondike*** c. all gold seeker were aided by the

asked by Kaai97 on October 28, 2015
57. ## science

howmany number of gold atoms are present in 0.6 of 18 carat gold. 24 carat gold is taken as 100 % pure gold

asked by rojina on September 17, 2019
58. ## CHEM****

Initial info: The atoms of crystalline solid pack together into a three-dimensional array of many small repeating units called unit cells. The simplest of the unit cells are those that have cubic symmetry, with atoms positioned at the corners of a cube.

asked by K on November 30, 2007
59. ## chem 101

how many unit cells in fcc gold?

asked by rita on October 19, 2009
60. ## 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

asked by delonte on September 10, 2006
61. ## math

shanon needs 20g of 80% of gold to make a pendan. she has some 85% gold and some 70% gold, from broken jewelry and wants to know how much she should use. determine the quantity of each alloy that she should use.

asked by geekgirl95 on June 18, 2011
62. ## 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?

asked by Anonymous on April 5, 2011
63. ## Statistics

(1) Gluten sensitivity, which is also known as wheat intolerance, affects approximately 15% of people in U.S. Let p be the proportion in a random sample of 800 individuals who have gluten sensitivity. Find the probability that the value of p is (a) Within

asked by Good learner on July 7, 2012
64. ## 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

asked by CJ on January 27, 2011
65. ## Math

1. Write the following ratio in simplest form: 32 min:36 min 8:9 8:36 32:9 128:144 2. Marie saved \$51. On Wednesday, she spent \$8 of her savings. What ratio represents the portion of her total savings that she still has left? 43:8 8:51 43:51 59:51 3. The

asked by Anonymous on November 12, 2015
66. ## 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?

asked by Kelsi on February 21, 2014
67. ## social studies

why does gold sink to the bottom of the pan? other than prospectors who else made money from the gold rush? why did some people in boomtowns become wealthy without mining for gold?

asked by Celest on April 17, 2012
68. ## Physiology

Pure gold has a density of 19 g/ml. If you bought a gold ring and found it had a volume of 0.3 ml and it weighed 5.7 grams, is it real gold? Show me your calculation

asked by Jerome on January 27, 2011
69. ## Chemistry 101

A crown is determine to weigh 2.65 kg. When this crown is submerged in a full basin of water, the overflow is found to be 145 mL. Is the crown pure gold or a gold-silver alloy? The density of silver is 10.5 g/mL and gold that of gold is 19.3 g/mL. Show

asked by Lilly on January 20, 2016
70. ## PROBLEM SOLVING IN MATHEMATICS

you have 13 bags of gold wins. out of 13 bags gold coins, there is one bag gold coins lighter. assume that one real gold coins is 10g and the fake is 9g. now, you are given a electronic beam balance. find the most minimum ways to figure out which bag of

asked by alya on October 1, 2011
71. ## PROBLEM SOLVING IN MATHEMATICS

you have 13 bags of gold wins. out of 13 bags gold coins, there is one bag gold coins lighter. assume that one real gold coins is 10g and the fake is 9g. now, you are given a electronic beam balance. find the most minimum ways to figure out which bag of

asked by alya on September 30, 2011
72. ## Chemistry 101

A crown is determine to weigh 2.65 kg. When this crown is submerged in a full basin of water, the overflow is found to be 145 mL. Is the crown pure gold or a gold-silver alloy? The density of silver is 10.5 g/mL and gold that of gold is 19.3 g/mL

asked by Lilly on January 18, 2016
73. ## math

With 20 pirates and 1000 pieces of gold: Captain Jack gets 113 gold coins (151 if you count the 38 everyone in the crew gets) First Mate gets 66 gold coins (104 if you count the 38 coins everyone in the crew gets) The Crew gets 38 gold coins each The PBA

asked by John W. on October 10, 2014
74. ## 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

asked by thomas on May 31, 2012
75. ## Statistics

A researcher found a sample proportion of 0.94 for estimating the population proportion of freshmen at a university who had Facebook accounts. If the standard deviation of the sampling distribution of the sampling proportion is 0.02, what is a 95%

asked by Mary on May 18, 2012
76. ## Chemistry

The relative amount of gold in an alloy is commonly expressed in units of carats. Pure gold is 24 carats, and the percentage of gold in an alloy is given as a percentage of this value. For example, an alloy that is 50 percent gold is 12 carats. State the

asked by Anonymous on August 18, 2013
77. ## Math

A rectangle has parameter of 24 unit, if width is 4 unit what is length. 10 unit 6 unit 16 unit 8 units My answer is 16 unit.. I wan a make sure if I am right.

asked by Anonymous on November 24, 2011
78. ## Math

A safety deposit box contains three ancient Roman coins: #1 both sides are silver #2 both sides are gold #3 one side is silver, the other gold You are blindfolded, then you pick a coin, then toss it so that it lands on the floor. At this point, the sample

asked by William Marand on March 28, 2019
79. ## Algebra 1 (HELP PLEASE!!)

The United States Mint reported at the end of 2006 that the unit cost of producing and distributing a penny was 1.21 c. What percent of the value of a penny is this cost? What can you conclude about the cost of making pennies? • How can a model help you

asked by Maggie on September 14, 2011
80. ## science

how does adding copper to gold change the economic value of the gold and the properties of the gold?

asked by logan on November 7, 2009

1. Write the following ratio in simplest form: 32 min:36 min 8:9 8:36 32:9 128:144 2. Marie saved \$51. On Wednesday, she spent \$8 of her savings. What ratio represents the portion of her total savings that she still has left? 43:8 8:51 43:51 59:51 3. The

asked by Delilah on October 30, 2012
82. ## Social Studies

Why were Kushites so eager to trade their gold for Egypt's grain? A. They did not have enough land to farm and needed food more than gold. ***? B. They worshiped grain as a god and so preferred it more than gold. C. They were afraid Egypt would take it by

asked by KirbyLove on August 16, 2019
83. ## physics2 lab

a 50 g bracelet is suspected of being gold plated lead instead of pure gold.when it is dropped into a full glass of water,4cm of water overflows.is the bracelet pure gold?if not,what proportions of its mass is gold?determine also the amount of its

asked by cristine sayon on November 23, 2017
84. ## Math

a person takes 10k gold bracelet weighing 80g to a gold buyer. the gold buyer offers them \$1000 cash. calculate the value of the bracelet and determine if the person is losing money. assume the gold price \$1400/oz. what is the answer?

asked by Godzilla on July 5, 2019
85. ## Social Studies

Why were Kushites so eager to trade their gold for Egypt's grain? A. They did not have enough land to farm and needed food more than gold.** B. They worshiped grain as a god and so preferred it more than gold. C. They were afraid Egypt would take force if

86. ## MATH

If there is a package of juice for \$3.75 how do i use a proportion to find the unit price of each?

asked by Anonymous on June 3, 2010
87. ## Math

Which ratios form a proportion? a. 4/9, 12/25 b. 3/7, 18/42 c. 5/11, 20/45 d. 5/8, 15/25 Which ratio forms a proportion with 18/30? a. 20/35 b. 50/90 c. 36/48 d. 60/100 Which proportion has cross products of 5 x 24 and 8 x 15? a. 5/8=15/24 b. 5/24=8/15 c.

asked by itsssjustme.ee on November 16, 2017
88. ## Math

Which Ratios for a proportion? A. 4/9,12/25 B. 3/7,18/42 C. 5/11,20/45 D. 5/8,15/25 Which ratio forms a proportion with 18/30? A. 20/35 B. 50/90 C. 36/48 D. 60/100 Which proportion has cross products of 5*24 and 8*15? A. 5/8 = 15/24 B. 5/24 = 8/15 C. 8/24

asked by Jack on November 13, 2017
89. ## math plz help!!!!!!!

which ratios form a proportion? A) 4/5 , 20/25 B) 8/12 , 18/24 C) 1/3 , 7/24 D) 2/5 , 6/16 which ratio forms a proportion with 9/15? A)3/6 B)2/3 C)12/30 D)6/10##### which proportion has cross products of 5 x 24 and 8 x 15? A)5/8=15/24 B)5/24=8/15

asked by awesomeguy123 on December 6, 2015
90. ## 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

asked by Jer on November 27, 2014
91. ## 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

asked by Jordan on April 10, 2017
92. ## math/unit rate

please help me find the definition for unit rate. It depends upon what kind of unit. Go to www.google.com and type in unit rate. There is one source there for hotel unit rates, another for unit rates for the medical field, etc. You may also go to

asked by hannah on September 26, 2006
93. ## Literature

In "Nothing Gold Can Stay," what does gold symbolize overall in the poem? Um... that gold can't last forever?

94. ## chemistry

From the jewelry descriptions given, select the homogeneous mixture or solution. Answer?? 10 carat (K) electroplated gold jewelry 24 carat (K) gold jewelry (i know this is pure gold) 18 carat (K) gold jewelry Are these right? CaCl2>>calcium chloride

asked by Lucky on January 28, 2013
95. ## Chemistry

From the jewelry descriptions given, select the homogeneous mixture or solution. Answer?? 10 carat (K) electroplated gold jewelry 24 carat (K) gold jewelry (i know this is pure gold) 18 carat (K) gold jewelry Are these right? CaCl2>>calcium chloride

asked by Lucky on January 28, 2013
96. ## 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?

asked by Anonymous on April 4, 2016
97. ## Chemistry

The density of gold is 1.93E4 kg/m3 and the cell volume is 6.78E-26 L. Determine the number of atoms in the unit cell. Note: the number of atoms in a unit cell is a whole number. For the purposes of this calculation, enter your answer to 3 significant

asked by Thy on February 4, 2008
98. ## English

The third man was the old man. He defeated the king with his lie. What lie did he tell the king? 1. His lie was as follows: You promised me a bag of gold. 2. His lie was this: You promised me a bag of gold. 3. His lie was that the king had promised him a

asked by rfvv on November 27, 2017
99. ## Math

1. Write the following ratio in simplest form: 32 min:36 min 8:9 8:36 32:9 128:144 2. Marie saved \$51. On Wednesday, she spent \$8 of her savings. What ratio represents the portion of her total savings that she still has left? 43:8 8:51 43:51 59:51 3. The

asked by YRN DJ on November 18, 2015
100. ## physics

4. What is the electric potential at the surface of a gold atom’s nucleus, which is assumed to be spherical? The radius of a gold nucleus is 6.6 x 10-15 meters and the atomic number of gold is 79.

asked by lol on March 13, 2011