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

84,257 results

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.

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 change? Explain or show ...

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 change? can you show me a ...

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 change? Explain or show ...

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.

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 cylinder would have the ...

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% silver. I couldn't find ...

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

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?.

physics

Question Part Points Submissions Used 1 2 3 4 0/0.37 0/0.37 –/0.37 –/0.37 4/15 1/15 0/15 0/15 Total 0/1.48 ...A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 46.05°. Inside the diamond, red light (ë = 660.00 nm in ...

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 highe meltong points...

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..

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?

6th grade

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!

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 of diamond C(...

Chemistry please help

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 of diamond C(...

Chemistry please help!

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 of diamond C(...

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?

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 RING IS 2.42

math 2nd grade

Makoto and Otis each decorate diamond patterns that are the same size and shape. Makoto deoorates 1/8 of a diamond. Otis decorate 1/4 of a diamond. Who decorates more

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?

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 of diamond C(...

physics

A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 46.05°. Inside the diamond, red light (ë = 660.00 nm in vacuum) is refracted at 17.38° with respect to the normal; blue light (ë = 470.00 nm in vacuum) is refracted at 17.09°

Chemistry

Methane and diamond have covalent bonds.Explain why methane is a gas and diamond is a solid at room temperature.

Chemistry

The density of carbon in the form of diamonds is 3.51 g/cm^3. If you have a 40- carat spherical diamond, what is the diameter of the diamond in millimeters? (1 carat=0.200 g)

English

1. It had to be a real diamond. 2. It must have been a real diamond. (Does #1 mean #2? Are both the same?)

11th grade

A diamond contains 0.090 moles of carbon what is the mass of the diamond

Chemistry

The density of pure diamond is 3.5 g/cm^3. The mass of a diamond is 0.25 g.Calculate its volume.

Chemistry

As a purity check for industrial diamonds, a 22 - carat diamond (1 carat = 0.2g) is heated to 63 degrees C and immersed in 26g of water in a constant pressure calorimeter. The initial temperature of the water is 23 degrees C. Calculate the ΔT of the water and of the ...

Physics- check answer please

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 water

Math

Three Bases and home plate make a diamond that is 90 feet on each side. What is the perimeter of the diamond?

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 idea? I've been ...

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 places) from the ...

physics

How would I figure out the answer to this question? 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 water

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.

physics

Calculate the index of refraction of a diamond if the speed of light in a diamond is 1.24x10 to the power of 8 m/s. Please break it down and show all the steps. :) thank you

science

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

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 would the Professor ...

social studies

What kind of industry is diamond ring?

Physics- check answer please

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 water Would the answer be a)?

CHEM

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

statistics

When a card is selected from a deck, find the probability of getting a diamond, a face card or a diamond, or a club and a king?

Algebra 2

4.)A diamond is purchased for $3500. Its value increases 5% each year. Find the value of the diamond after six years.

algebra 2

A diamond is purchased for $3500. Its value increases 5% each year. Find the value of the diamond after six years.

algebra 2

a diamond was purchased for $2500. If is its value increases 6% each year, give the value of the diamond after 10 years?

Math, algebra

1. If $x <> (sqrt xy)/(|x-y|), find 4 <> (9 <> 1) to the nearest tenth. <>=diamond This is a function, where the "diamond" represents a function. 2. If f(x) = 3x^2 - 5, what is the value of f(f(-1))?

math

a sprinkler system on a baseball diamond rotates 120 degrees and sprays water up to 35 meters. What is the area of the diamond that can be watered with the sprinkler

math

A card is drawn from an ordinary deck of 52 cards, and the result is recorded on paper. The card is then returned to the deck and another card is drawn and recorded. Find the probability that the following occurs: a) the first card is a diamond b) the second card is a diamond ...

Chem

Diamonds are measured in carats (1.0 carat=0.200g). The density of diamond is 3.51 g/cm^3. What is the VOLUME of a 5.0 carat diamond?

Algebra 1 (Ms. Sue)

1). Solve each equation. 17 = w - 4 2/3s = -6 1/3y + 1/4 = 5/12 x/8 - 1/2 = 6 5/6x - 1/3 = 5/2 2). In 1668, the Hope diamond was reduced from its original weight by about 45 carats, resulting in a diamond weighing about 67 carats. Write and solve an equation to find how many ...

Math

When the queen counted her jewels, she found that she had five pearls for each diamond, two opals and three rubies for each diamond, and two emeralds for each opal. If she has three diamonds, how many jewels does she have altogether?

English

1. The stolen diamond necklace is insured for five million dollars. 2. I have insured the stolen diamond necklace for five million dollars. 3. I insured the stolen diamond necklace for five million dollars. 4. I insure the stolen diamond necklace for five million dollars. (...

physics

1.A beam of light passes through the air and enters a diamond at an angle of incidence of 40 degrees. Use Snell’s Law to find the angle of refraction of the diamond. (Index of refraction for air is 1.00 and the index of refraction of a diamond is 2.42.) If the beam of light ...

MAths algebra

Consecutive bases of a square shaped baseball diamond are 90 feet apart .Find to the nearest tength of a foot the distance from first base diagonally across the diamond to third base

physical sciences

Diamond is the hardest substance known while graphite is one of the softest. Both are made only of carbon atoms. What is the most likely reason why this is true? A. Both are bonded ionically. B. Both are bonded covalently. C. The carbon atoms are arranged differently in ...

chemistry

consider a random mixture of two particles,diamond and SiC.Assume all particles are spherical with a radius of 0.100mm. The mixture is 80.0 wt% diamond(density=3.51 g/ml) and 20.0 wt% SiC (density=3.23 g/ml) a)Calculate the mass of a single particle diamond and the number of ...

science

i need some help on this question a diamond cutter has a raw diamond that weighs 19.5 carats and from which two 5-carat diamonds will be cut. i need to find out how much the raw diamond weigh in milligrams and plus how much will each of the two cut diamonds weigh in milligrams

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

Algebra 2

A diamond is purchased for $3500. Its value increases 5% each year. Find the value of the diamond at the end of the sixth year of ownership. Please explain

chemistry

A diamond is a natural form of pure carbon. How many atoms of carbon are in a 1.00 carat diamond. (1.00 carat= 0.200 grams) Helppp pleasee!

math

A diamond is purchased for $3500. Its value increases 4% each year. Find the value of the diamond at the end of the sixth year of ownership.

ict year 7

flow chart symbols purpose and example.one looks like a rectangle and one looks like a diamond .thanks

Math

The bases on a baseball diamond are 27.4m apart. The pitcher pitches,and the batter hits a fly ball straight up 15m. What is the maximum angle of elevation of the ball to the nearest degree, as seen by the pitcher if he is standing at the center of the diamond? HELP

Trigonometry

A black bordering Sapphire St. is a right triangle. You start walking around the block, taking 125 paces on sapphire st. and 102 paces on Diamond st. a.) At what angle do Diamond and Sapphire Street Intersect ?

trogonometry

A black bordering Sapphire St. is a right triangle. You start walking around the block, taking 125 paces on sapphire st. and 102 paces on Diamond st. a.) At what angle do Diamond and Sapphire Street Intersect ?

general chemistry 1

The density of diamond is 3.51 g/cm3 and the density of lead is 11.3 g/cm3. If equal masses of diamond and lead are transferred to equal volumes of water in separate graduated cylinders, which graduated cylinder would have the greatest volume change?

really need some help with this

i need some help on this question a diamond cutter has a raw diamond that weighs 19.5 carats and from which two 5-carat diamonds will be cut. i need to find out how much the raw diamond weigh in milligrams and plus how much will each of the two cut diamonds weigh in milligrams

SCIENCE

I HAVE A DIAMOND BRACELET THAT HAS THE MARKINGS OF JAFA STAMPED ON THE INSIDE OF IT ABOVE 05TW MEANING THE TOTAL WEIGHT. WHAT DOES THE JAFA STAND FOR?

Math

Diamonds are measured in units called a carat. One carat equals 200mg. If a diamond is 0.600 carat, what is the mass of the diamond in ounces? * 1kg=2.205 pounds* *1pound= 16 ounces* . . How do I get to the answer showing work/setting it up?

6th gr. math

c=s The variable s represents number of additional necklaces and the variable c repres. total # of diamond neck.If louie has 3 neck. in his hand how many are diamond necklaces? please help me solve

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?

Chemistry

Under standard conditions (298 K and 1 atm), which statement is true? a] diamond converts to graphite spontaneously b] graphite converts to diamond spontaneously c] none of the above How can the spontaneity of the reaction be reversed? a] increase the temperature b] decrease ...

English

1. So the necklace on his desk had to be the real diamond necklace. 2. So the necklace on his desk must have been the real diamond necklace. (Does #1 mean #2? What is the difference between them?) 3. He must be strong. 4. He has to be strong. (Are both grammatical and the same...

Physics. Urgent help need!!

A baseball player hits a triple and ends up on third base. The baseball "diamond" is a square, each side with length 24.2 m, with home plate and the three bases on the four corners. What is the magnitude of his displacement? * I'm not familiar with the sport i divided the ...

Math (Geometry)

"Target Games: Darts are thrown at each of the boards shown below. A dart hits the board at a random point. Judging by appearances, find the probability that it will land in the shaded region." This figure is a diamond (the diamond is not shaded) and it has half a circle ...

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.

math

write each ratio in simplest form..1) 2 yards to 15 feet.2) in a survey,9 out of 10 doctors recommended a certain medicine.if 80 doctors were surveyed,how many doctors recommended the medicine? 3)find each unit rate.travel 804 miles in 16 hours.4) the mass of a diamond is 1.76...

Math: Help: probability

Which answer, if any, is correct to: Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond? My options are 13:204; 204:13, 13;191; or 191:13 I had two different people help me and here are the ...

Math - 8th Grade

Please help: The distance from home plate to second base on a softball diamond is 84.853 feet. This is the same as the distance from first base to third base. What is the area of a softball diamond? Round your answer to the nearest square foot. 1,800 ft.2 3,558 ft.2 7,200 ft.2...

physics

A jewel thief decides to hide a stolen diamond by placing it at the bottom of a crystal-clear fountain. He places a circular piece of wood on the surface of the water and anchors it directly above the diamond at the bottom of the fountain, as shown below. If the fountain is x...

English

Identify the sentence that is correctly punctuated. A. When the police recover the lost merchandise—a diamond bracelet, they will notify you. B. When the police recover the lost merchandise (a diamond bracelet), they will notify you. C. When the police recover the lost ...

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 input tube at the bottom...

math

I'm working on a school math project, and i need to make my own 2 plans, i know that you can split all 17.5 ct diamonds so that each pirate would get 4.375 ct diamonds but i want to know how i would split them up, like into to 1/2 s or 1/4 and i need another plan please help ...

Phy

The index of refraction for a diamond for red light of wavelength 655 nm is 2.35, while that for blue light of wavelength 437 nm is 2.26. Suppose white light is incident on the diamond at 29.5. Find the angle of refraction for red light. Answer in units of 

Trigonometry

a black bordering sapphire street is a right triangle. you start walking around the block, taking 125 places on sapphire street and 102 paces on diamond street. a.)At what angle do diamond and sapphire street interest ? b.)How Many Paces must you take on Gold Street to ...

9th grade algebra

i'm trying to find someone that knows what a diamond problem in algebra is. it is a diamond shape divided into 4 equal parts in the example it has an xy at the top an x on the left and a y on the right and x+y on the bottom. then on problem #1 it has a 15 at the top an 8 at ...

Math

How much farther is it around the bases of a 90 feet diamond than around the bases of a 60 feet diamond

markings on jewelry

i have a silver ring with a symbol on the inside the symbol is an upper case u with an arrow through it what does it mean?

Spanish-SraJMcGin please check

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 earrings. Le gusta ...

trigo

A block bordering Sapphire Street is a right triangle. You start walking around the block, taking 125 paces on Sapphire Street and 102 paces on Diamond Street. a. At what angle do Diamond and Sapphire Streets intersect? b. How many paces must you take on Gold Street to ...

physics

A diamond's index of refraction for red light, 656 nm, is 2.410, while that for blue light, 434 nm, is 2.450. Suppose white light is incident on the diamond at 32.2°. Find the angles of refraction for red and blue light. red light? blue light?

Chemistry

OMG, I did the other fifteen questions of my homework but I'm stuck on these. #1: Which has the higher average kinetic energy, a tub full of 50'C water, or a small cup of 52'C water. Why? Which has more total kinetic energy, the tub or the cup? Why? #2: Lithium, sodium, and ...

Math

the distance between any two bases on a baseball diamond is 90 feet.What is the best approximation for the direct distance from home plate to second base? A baseball diamond's four bases form a square with 90 foot sides. A right triangle is formed by home plate, first and ...

english

i have written an argument paragraph, but my grammar is bad. so can someone tell me how to proofread my paragraph. thx The issue of whether cell phone is endangering people¡¦s safety on the road is still hotly debated. The article, ¡§Cell phones: a call for driving ...

econ

Suppose there are 1000 identical firms producing diamonds. Diamond miners receive the wage rate w. Assume that the short-run cost function for each diamond-producing firm is C(q) = wq + q2. a. If w = 10, what is the supply curve of an individual firm? What is the market supply...

econ

Suppose there are 1000 identical firms producing diamonds. Diamond miners receive the wage rate w. Assume that the short-run cost function for each diamond-producing firm is C(q) = wq + q2. a. If w = 10, what is the supply curve of an individual firm? What is the market supply...

Math

Two cards. Refers to choosing two cards. If you do not put the first card back in the deck before you draw the next, what is the probability that the first card is a club and the second card is a diamond? Leave your answer as a fraction in SIMPLEST form. The probability that ...

chemistry

1.) How many carbon atoms are contained in a 1.500 carat diamond (carbon) if 1 caret =200.0 mg? _____________________________ I don't know if I'm doing this right but I tried. Can someone help? 1.500 carat diamond (C) *(200.0 mg/1 caret) ... __________________________________ ...

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 is placed on a ...

adult education

we have a ring that has an indian head marking on the inside of the ring, do you know what it means, who made it, how old it is, or what its actually called so we can search the meaning ?

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