# I have a what looks to be a silver or platinum ring, it has a diamond chip, but not a full diamond to my knowledge. Inside it is marked with a star then 10k. The star might have something in

2,923 results
1. ## Science

I have a what looks to be a silver or platinum ring, it has a diamond chip, but not a full diamond to my knowledge. Inside it is marked with a star then 10k. The star might have something in it but its hard to tell.

asked by J on April 13, 2010
2. ## Jewelry markings

I have to find out what certain markings on jewelry mean. 925-I think it means silver, but I have to be more in depth. han-hand made? S O- no idea F-no idea 925 is indeed sterling silver. I have no idea on the others. The 925 specifically means 92.5%

asked by Lisa on December 17, 2006
3. ## physics

a ring made of diamond and gold ( sp. gravity respectively 3.5 and 17.5) weight 7.35*10^-3 kg. when immersed in water , the ring weighs 6.85*10^-3 kg. find the weights of the diamond and the gold of the ring

asked by palash on November 21, 2017
4. ## chemistry

The density of diamond is 3.51g/cm^3,and the density of platinum is 21.43g/cm^3.If equal masses of diamond and platinum are transferred to equal volumes of water in separate graduated cylinders,which graduated cylinder would have the greatest volume

asked by summer on January 22, 2017
5. ## chemistry

The density of diamond is 3.51 g/cm^3 and the density of platinum is 21.43g/cm^3. If equal masses of diamond and platinum are transferred to equal volumes of water in separate graduated cylinders, which graduated cylinder would have the greatest volume

asked by summer on January 22, 2017
6. ## Chemistry

The density of diamond is 3.51g/cm^3,and the density of platinum is 21.43g/cm^3.If equal masses of diamond and platinum are transferred to equal volumes of water in separate graduated cylinders,which graduated cylinder would have the greatest volume

asked by Alasow on September 4, 2016
7. ## Chem

This question is also confusing me… The density of diamond is 3.51 g/cm^3 and the density of platinum is 21.43g/cm^3. If equal masses of diamond and platinum are transferred to equal volumes of water in separate graduated cylinders, which graduated

asked by Amy on September 1, 2015

Kara has a diamond ring. Her ring has a volume of 6cm(to the third power) and a mass of 2g. What is the density of her ring? INCLUDE UNITS!

asked by kEVIN on April 6, 2010
9. ## Math

Amy bought a diamond ring for \$6,000. If the value of the ring increases at a constant rate of 5.8% per year, how much will the ring be worth in twenty-one years?

asked by Ben on October 12, 2017
10. ## Physics

A silver wire and a platinum wire of the same length have the same resistance. What is the ratio of the diameter of the silver wire to that of the platinum wire. I did 10.6E-8/1.59E-8 but am not getting correct answer?

asked by jason on February 10, 2012
11. ## Physics

A LADY IS GETTING MARRIED IN 2DAYS TIME.HER HUSBAND BUYS HER A DIAMOND RING.ON THE DAY OF HER WEDDING HER HUSBAND PLACES THE RING ON HER FINGER.THE RING REFRACTS AT AN ANGLE OF 23.24 DEGREES.CALCULATE THE ANGLE OF INCIDENCE IF THE REFRACTIVE INDEX OF A

asked by Sivashen on March 21, 2011
12. ## Physics

A silver wire and a platinum wire of the same length have the same resistance. What is the ratio of the diameter of the silver wire to that of the platinum wire.

asked by jason on February 9, 2012
13. ## Chemistry

A student finds a medallion which could be made of pure platinium or silver. IN order to find out what the medallion is made of the student takes the medallion to a chemistry lab. The student measures the density of the medallion as follows. The medallion

asked by Kevin on October 12, 2009
14. ## Math

Professor Smith has invented a time machine and is going to travel back in time 15 years to buy his wife a diamond ring. The ring cost \$5000, 15 years ago . The average rate of inflation is 3.09% per year. Round answers to nearest whole \$. How much money

asked by Tyreice on March 18, 2017
15. ## Calculus

Inclusive of a 6.4% tax, a diamond ring sold for \$2128.00. Find the price of the ring before the tax was added.

asked by Darlene on November 4, 2012
16. ## Chemistry (materials / metals)

Please help with 5 questions: 1) what metals are the alternatives to platinum? 2) what are the advantages/disadvantages of these alternatives? 3) what is the life cycle of platinum? 4) how are the materials in your platinum and processes? (be sure to

asked by LISA AND MICHELLE IN LA on December 17, 2007
17. ## CHEMISTRY

1) hwhich steps in the life cycle of copper consume energy? for each step, can you explain the particular energy needs? 2) which life-cycle steps (such as the reduction of a mineral in an ore to produce platinum) require the use of other material? 3)how

asked by LISAINLA on December 18, 2007
18. ## Chemistry

Pure platinum is too soft to be used in jewelry because it scratches easily. To increase the hardness so that it can be used in jewelry, platinum is combined with other metals to form an alloy. To determine the amount of platinum in an alloy, a 7.804 g

asked by Pauline on March 14, 2018
19. ## chemistry

A silver ring contains 0.0134 mmol Ag. How many silver atoms does it contain?

asked by jane on July 2, 2010
20. ## chemistry

A silver ring contains 0.0134 mmol Ag. How many silver atoms does it contain?

asked by jane on July 2, 2010
21. ## Chem

A pure silver ring contains 2.60X10^22 silver atoms. How many moles of silver atoms it contain?

asked by Tiffany on August 31, 2015
22. ## Elementary education

A napkin ring is being made of cast silver. It has the shape of a cylinder 1.25 inches high, with a cylindrical hole 2 inch in diameter and a thickness of 1/16 inch. How many ounces of silver are needed? [silver weighs 6 ounces per cubic inch]

asked by Ashley on April 8, 2016
23. ## Math Concentration

Joe has a ring weighing 10 grams made of an alloy of 13% silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 69%. How many grams of silver should he add? My set up is: 10 (.13 + .87) = 10 (.13 + X

asked by missy on June 27, 2011
24. ## social studies

What kind of industry is diamond ring?

asked by Pam on October 4, 2014
25. ## algebra

Joe has a ring weighing 15 grams made of an alloy of 20 silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 67 . How many grams of silver should he add?

asked by Amy Love on September 28, 2011
26. ## Physics(class) /Math (problem)

Joe has a ring weighing 16 grams made of an alloy of 20% silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 69% . How many grams of silver should he add?

asked by Toulouse on October 4, 2012
27. ## CHEM

SAPPHIRE AND DIAMOND RING ,STAMPED 14K S&S WHAT DOES THIS MEAN?

asked by DINA on September 24, 2011

I had to describe jewelry my mom wears-I'm not sure if this is correct. Mi madre lleva un anillo de diamantes. My mother wears a diamond ring. Ella también lleva las aretes de oro muy bonita. A veces, ella usa aretes de plata.Sometimes, she wears silver

asked by Terry on February 13, 2012
29. ## science

I have a gold and diamond ring, probably fake. It is only stamped with the number 35 on the inside.That is why i think it is only junk..

asked by gary on March 12, 2008
30. ## Science

One gram of platinum has 3.09 × 1021 atoms, and each platinum atom has 78 electrons. How many electrons are contained in 4.00 g of platinum? The elemental charge is 1.6 × 10−19 C. Answer in units of electrons

asked by Rachel on February 26, 2014
31. ## Physical Science

Can you please go over my answers to see if Im correct Im having trouble in this class. A car with mass 2000kg is held at a height of 1.8 meters by a hydraulic lift. The surface area of the piston inside the lift is 300cm², and the surface area of the

asked by John on September 18, 2011
32. ## math

3. A diamond ring valued at \$7000 was insured at 80% of its value. What was the premium, if the rate was \$6 per 1000? A.\$3.36 B.\$4.20 C.\$33.60 D.\$42.00 E.\$336.00

asked by vincent on August 7, 2014
33. ## Phys. Sci.

Which metal will only be found in nature combined with other elements? 1. gold 2. silver 3. platinum 4. lithium Thanks, Morgan

asked by Morgan on April 18, 2009
34. ## Chemistry

I am having trouble answering a question and need some advise. If one proton is taken from a nucleus of a sample of Au79 i would get platinum 78 and if one was added i would get Mercury 80. I am trying to decide which one is the more valuable financially.

asked by Flame on February 10, 2007
35. ## maths

in a rhombus ring pattern, each rhombus in the last ring has an angle of 20 dgerees and each rhombus in the second last ring has an angle of 60 degrees. What are the angles in each rhombus in the 3rd last ring? How many rhombuses are there in the first

asked by kiera on May 30, 2018
36. ## math

the density of a diamond is 3.52 grams per cubic centimeter. Sally has a diamond that has a volume of 20 mm^3. What is the weight of the diamond?.

asked by Dan on April 7, 2011
37. ## math

Bruce draws rings of rhombuses about a common centre point. All rhombuses have the same side length. Rhombuses in the first, or inner, ring are all identical. Each rhombus has a vertex at the centre and each of its sides that meet at the centre is shared

asked by Bob on May 27, 2018
38. ## physics

A circular ring of wire of diameter 0.60 m carries a current of 35A. What acceleration will the magnetic force generated by this ring give to an electron that is passing through the center of the ring with a velocity of 1.2*10^6 m/s in the plane of the

asked by steve on November 4, 2010
39. ## chemistry

Calculate the number of atoms in each of the following. A)1.50g potassium B)0.470g of oxygen C)0.555g of silver chlorate,AgCIO3 D)7.57 of platinum please help i do not understand this

asked by twynna on February 28, 2011
40. ## Chemistry

Basically as you know the electrons circle the nucleus well in that first ring how many elcetrons are there, in the second and so forth Here are the "ring" number, when filled: 2n^2 where n is the ring number: example n= 3, the third" ring" 2*3^2= 18 No, I

asked by Cupcake on October 17, 2006
41. ## physics

There is a bar magnent falling through a metal ring. The first metal ring is solid all the way around but in the second metal ring it has been cut through. Why is the motion in the magnent with the solid metal ring retarded when the magnent is above the

asked by H on July 24, 2008
42. ## physics

A 33.1 g ring that appears to be silver is heated to a temperature of 77°C, and then placed in a calorimeter containing 5.00 10-2 kg of water at 24.0°C. The calorimeter is not perfectly insulated, however, so that 0.14 kJ of energy is transferred by heat

43. ## math

A baseball diamond has 90 ft between each base A sofball diamond has 60 ft between each base How many yards longer is the space between bases an a baseball diamond than a softball diamond?

asked by sans on March 24, 2011
44. ## visual logics

I am trying to write a program to generate a diamond shape each line has odd number of circles. have created the left side of diamond but cant figure how to nest info to make it a complete diamond

asked by darrick on September 21, 2012
45. ## chemistry

The element platinum has ccp packing with a face-centered cubic unit cell. The density of platinum is 21.5 g/cm3. Calculate the volume (cm3) of the unit cell of platinum.

asked by tweety on February 21, 2009
46. ## Chemistry

Alicia's cheapskate boyfriend gave her a ring he claims is 24 carat gold. Alicia is skeptical. After chem class the next day she measures the mass of the ring, finds the volume of the ring by water displacement, and then calculates the density of the ring.

asked by Patrice on September 13, 2010
47. ## chemistry

There are 3.01X1023 atoms of gold, 1 mole of platinum, 3.01 moles of silver. Which one contains more atoms

asked by kelly on July 23, 2018
48. ## chemistry II

What is most likely to oxidize out of the following transition metal:? Platinum, copper, gold, palladium, silver? i believe its copper but check and see if i am right

asked by markr on April 29, 2007

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole

asked by Rose on April 8, 2016

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole

asked by Rose on April 7, 2016
51. ## Chem

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole

asked by Rose on April 7, 2016
52. ## Physics E&M

An electron is released from rest on the axis of a uniform positively charged ring, 0.100 m from the ring's center. If the linear charge density of the ring is +0.149 µC/m and the radius of the ring is 0.200 m, how fast will the electron be moving when it

asked by Alex on January 24, 2010
53. ## Chemistry

We are given that the solubility product of platinum (II) sulfide is 9.9x10^-74 We are told to write a balanced equation for dissolving platinum (II) sulfide. I put : PtS(S) Pt^2+(aq) + S^2-(aq) and then we had to write the Ksp expression: Ksp=[Pt^2+][S2-]

asked by Kellie on May 3, 2017
54. ## chem

can you help me with the following question please... what alternative metals can be considered for platinum? I think it means which metal is closest to platinum?

asked by Jake s on December 20, 2007
55. ## chemistry

Platinum has a face-centered cubic crystal structure and a density of 21.5 g/cm3. What is the radius of the platinum atom?

asked by Fred on January 29, 2010
56. ## pre calc

A jeweler wants to make a 1 ounce ring composed of gold and silver, using \$200 worth of metal. If gold costs \$6000 per ounce and silver is \$50 per ounce, how much of eat metal should she use?

asked by Jody on September 15, 2014
57. ## chemistry

A 0.509 g sample pure platinum metal was reacted with hcl to form 0.889 g of a compound containing only platinum and chlorine?

asked by Sofia on July 11, 2018
58. ## Literature

"Slowly, silently, now the moon Walks the night in her silver shoon This way, and that, she peers, and sees Silver fruit upon silver trees; One by one the casements catch Her beams beneath the silvery thatch; Couched in his kennel, like a log, With paws of

asked by Anonymous on April 8, 2013
59. ## Chemistry

Consider diamond and graphite. Which of the following is true? (A) Graphite should have a higher melting point than diamond. (B) Differences in composition account for the different properties of gaphite and diamond. (C) Amorphous soilds are likely to have

asked by Bouforyou on February 10, 2010
60. ## Turquoise Ring Marking

Does anyone know anything about the marking "MP in a circle" Silver turqoise ring that belonged to my grandmother

asked by Flo on April 28, 2011
61. ## math

A two dimensional picture of a circular onion ring is shown at the right. The inner radius of the onion ring is x cm. and the thickness of the ring is 1 cm. Which of the numbered choices represents the area, in square centimeters, of the onion ring (the

asked by Anonymous on December 23, 2013
62. ## math

A two dimensional picture of a circular onion ring is shown at the right. The inner radius of the onion ring is x cm. and the thickness of the ring is 1 cm. Which of the numbered choices represents the area, in square centimeters, of the onion ring (the

asked by Anonymous on December 23, 2013
63. ## Physics

In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring (where it is always noon). The tangential speed of the ring is 1.25x10^6 m/s,

asked by Anonymous on February 12, 2014
64. ## gaithersburg middle school

RING TOSS Objective: Toss a ring onto the top of one of the green bottles. Method: You will have 3 chances to toss a ring. You will toss only one ring at a time from a distance of 5 feet. The bottle your ring lands on will be removed from the box after

asked by ester on June 9, 2016
65. ## Chem

a 0.2000 grams sample of aluminum metal is added to a solution containing 1.0000grams of an unknown compound made of platinum and chloride ion. the reaction results in the formation of aluminum chloride and platinum metal. when the reaction is complete,

asked by Carley on March 1, 2014
66. ## Chem

When 5.49 g of platinum reacts with an excess of fluorine, 7.65 g of platinum(_) fluoride forms. a. What is the mass of fluorine in the compound? b. Find the number of moles of platinum that reacted. c. Find the number of moles of fluorine that reacted. d.

asked by Lauren on September 11, 2017
67. ## jewelry markings

I have a ring that appears to be gold plate over silver with the markings COP copyright 89 5. Can you tell me what this means ?

asked by mark on August 22, 2010
68. ## CHEMISTRY HELP!!!

A silver ring is dropped in a solution of Pb(NO3)2 for a certain period. Will you find it intact? Explain.

asked by lea on May 11, 2013
69. ## chemistry

silver iodide powder has been used as and antiseptic and as and agent to seed clouds for rain . silver iodide is 45.9% silver by mass . if you separtate a 50-g sample of silver and iodide , how much iodide is into its elements, silver and iodide how much

asked by amanda mosley on September 18, 2012
70. ## chemistry

In the laboratory a student finds that it takes 20.7 Joules to increase the temperature of 11.0 grams of solid platinum from 20.5 to 35.8 degrees Celsius. What is the specific heat of platinum she has measured.

asked by grace on March 11, 2014
71. ## Math

A new car manufacturer is designing a logo. It is in the shape of a diamond inside a rectangle. The diamond is to have a horizontal width of 3 cm and an area equal to one sixth of the area of the rectangle. Find the required height of the diamond.

asked by Anonymous on May 8, 2016
72. ## Physics

At the time this problem was written, the price of gold was \$427 per ounce, while that of platinum was \$866 an ounce. The "ounce" in this case is the troy ounce, which is equal to 31.1035 g. The density of gold is 19.3 g/cm^3 and that of platinum is 21.4

asked by Christina on November 29, 2007
73. ## math

A baseball diamond has 90 ft. between each base. A softball diamond has 60 ft between each base. How many yards longer is the space between bases on a baseball diamond than a softball diamond?

asked by Kelsey on April 4, 2013
74. ## World Literature

For an essay, I'm using the quote “One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them” (The Fellowship of the Ring, page#). I'm not sure what to put for the page number because the quote is in the

asked by Kate on September 21, 2007
75. ## Physics

A uniform thin ring of charge, with radius 5.20 cm and total charge 6.60 ìC, is located in the yz-plane and centered on the origin. (In other words, the x-axis passes through the center of the ring, and is perpendicular to the ring.) A particle of mass

asked by Rudi on November 1, 2010
76. ## science

how is diamond connected to science? how is diamond connected to math? how is diamond connected to you? why is diamond important?

asked by anonymous on December 21, 2007
77. ## Physics

The electric field on the axis of a uniformly charged ring has magnitude 370kN/C at a point 6.2cm from the ring center. The magnitude 17cm from the center is 150kN/C ; in both cases the field points away from the ring.Find the ring's radius.

asked by Anonymous on March 10, 2014
78. ## CHEMISTRY

What is the function ( or role ) of platinum in electrochemistry in general ? I read a question about platinum in electric potential , and in standard electrode potential ?! thank you a lot

79. ## chem

One method for reclaiming silver metal from silver chloride results in a 94.6% yield. Calculate the actual mass of silver that can be produced in this reaction if 100.0 g of silver chloride is converted to silver metal. 2AgCl(s) y 2Ag(s) . Cl2(g)

asked by Anonymous on June 2, 2008
80. ## Chemistry

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole

asked by Rose on April 5, 2016
81. ## Math (trigonometry)

A baseball diamond is actually a square with each side approximately 27.4 m. The pitcher's mound is 18.4 m from home plate on the diagonal of the square - note that the pitcher's mound is NOT located at the centre of the diamond! a) How far (to 3 decimal

asked by Sammy on December 2, 2012
82. ## chemistry

a 0.2000 grams sample of aluminum metal is added to a solution containing 1.0000grams of an unknown compound made of platinum and chloride ion. the reaction results in the formation of aluminum chloride and platinum metal. when the reaction is complete,

asked by Anonymous on March 3, 2014
83. ## English

I forgot to include the following sentences. I really hope you can have a look at them, too. 1)The message on the golden casket says that the person who chooses it will have what many men want. The silver one says that he will have as much as he deserves.

asked by Franco on October 10, 2010
84. ## Jewelry markings

I have a diamond ring with the marks "KOBI 14K" inside. I know what the 14K stands for; but, what does the "KOBI" mean?

asked by Dee on December 21, 2007
85. ## math

one way to resize a ring is to fill a bar into the ring.suppose a ring that is 20 mm in diameter has to be resized to fit a fingure 16 mm n diameter what is the length of the bar that should be inserted in order to make the ring fit the fingure? ( Hint:

asked by ???? on May 3, 2011
86. ## Math

one way to resize a ring is to fill a bar into the ring.suppose a ring that is 20 mm in diameter has to be resized to fit a fingure 16 mm n diameter what is the length of the bar that should be inserted in order to make the ring fit the fingure? ( Hint:

asked by Diala on November 28, 2010
87. ## Math

. Suppose in an event of fire, the probability is 95% that fire alarm will ring in a building. Let x denote the number of fire alarm that will ring in case of fire. Suppose there are 3 fire alarms. a) Write the probability distribution of x. b) Explain

asked by Zeet Ashrabi on November 11, 2018
88. ## Chemistry

Which of the following substances could be heated from 20°C to 100°C most quickly? Assume identical heat sources are used on all substances. Specific Heat (J/g degrees C) Gold: 0.1291 Platinum: 0.1326 Silver: 0.2350 Tin: 0.2274 Can you please explain how

asked by Angela on March 26, 2014
89. ## physics

Find the electric field strength |E| at point P right above the edge of a metal ring. The ring has a linear charge density ë. Radius of the metal ring is R, the distance from the edge of the metal ring to Point P is D. thank you for helping.

asked by lam on September 27, 2012
90. ## physics

please,i need help on this question:a thin circular ring of radius 20cm is charged with a uniform charge density(rho),if a small section of 1cm length is removed from the ring.calculate the electric field intensity at the center of the ring

asked by culata on May 16, 2010
91. ## Diamond?

I recently received agorgous "diamond" ring as a gift. He said it was real but I'm not sure. It looks real, the four Cs and everything. But to know for sure without it being apraised I need to know what the stamps inside mean. GF"A" Does anyone have an

asked by Linda on June 7, 2007
92. ## Physics and Calculus

Consider a charged ring of radius 27 cm and total charge 15 nC. We are interested in the electric field a perpendicular distance z away from the center of the ring. At what distance from the center of the ring does the electric field become maximum? Hint:

asked by Sandra on February 15, 2010
93. ## Physics

A man's gold wedding ring has an inner diameter of 2.0cm at 30∘C. Part A If the ring is dropped into boiling water, what will be the change in the inner diameter of the ring?

asked by Help! final next weel on December 3, 2013

Would the answer be b)? diamond into air? A critical angle of 24.4 degrees applies to: a) light travelling from air into diamond b) light travelling from diamond into air c) light travelling from water into diamond d) light travelling from diamond into

asked by Liz on August 1, 2014
95. ## physics

Find the electric field E at point P right above the edge of a metal ring. The ring has a linear charge density ë. Radius of the metal ring is R, the distance from the edge of the metal ring to Point P is D. thank you for helping.

asked by lam on September 27, 2012
96. ## math

find the area of this ring to the nearest square unit. Show your work. The image shows a ring, the inside raius is 2.0m, and the outside radius is 3.2m. The area of the ring is... plz help!! thx.

asked by olivia on December 12, 2008
97. ## Chemistry

One of the largest diamonds ever found, weighing 0.621 kg, was discovered in South Africa in 1905. The carbon alloptropes graphite and diamond have densities of 2267 and 3515 kg/m3 respectively. At a temperature of 1700K and a pressure of 12.0 x 109

asked by TS on August 23, 2018
98. ## phy

silver ball= 50g water= 350 g water= 0 celcius equilibrium temperature= 10 celcius specefic heat capacity of platinum= 230 what is the temperature of furnace?

asked by pop on July 14, 2011
99. ## Chemistry

The density of platinum is 23.4 g/cm cubed. Calculate the mass of 75.0cm cubed of platinum.

asked by Sparkle on September 26, 2012
100. ## unknown

The density of platinum is 23.4 g/cm3 at 20°C. Calculate the mass of 75.0 cm3 of platinum at this temperature.

asked by Anonymous on August 15, 2013