Chemistry

Chemistry, 21.09.2019 09:20, 2022rickskyye

What's the difference between gold and other metals

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Mathematics, 01.07.2019 12:10, braydenmcd02

For thousands of years, gold has been considered one of the earth's most precious metals. one hundred percent pure gold is24-karat gold, which is too soft to be made into jewelry. most gold jewelry is 14-karat gold, approximately 58% gold. if 18-karat gold is 75% gold and 12-karat gold is 50% gold, how much of each should be used to make a 14-karat gold bracelet weighing 200 grams?

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Chemistry, 01.07.2019 20:00, amaliathornton22

Which of these is a reason gold is more expensive than metals like aluminum? a) gold is rarely found in earth’s crust. b) gold is the most common metal on earth. c) gold is one of the lightest metals known to man. d) gold can easily be bent into attractive shapes and designs.

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Chemistry, 26.07.2019 06:10, mari048

Apiece of iron (c=0.449 j/g°c) and a piece of gold (c=0.128 j/g°c) have identical masses. if the iron has an initial temperature of 498 k and the gold has an initial temperature of 298 k, which of the following statements is true of the outcome when the two metals are placed in contact with one another? assume no heat is lost to the surroundings. a. since the two metals have the same mass, the final temperature of the two metals will be 398 k, exactly half way in between the two initial temperatures. b. since the two metals have the same mass, but the specific heat capacity of iron is much greater than that of gold, the final temperature of the two metals will be closer to 498 k than to 298 k. c. since the two metals have the same mass, the thermal energy contained in the iron and gold after reaching thermal equilibrium will be the same. d. since the two metals have the same mass, but the specific heat capacity of gold is much smaller than that of iron, the final temperature of the two metals will be closer to 298 k than to 498 k. e. none of the above are true.

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Mathematics, 17.10.2019 18:30, makayladurham19

For thousands of years, gold has been considered one of the earth's most precious metals. one hundred percent pure gold is 24-karat gold, which is too soft to be made into jewelry. most gold jewelry is 14-karat gold, approximately 58% gold. if 18-karat gold is 75% gold and 12-karat gold is 50% gold, how much of each should be used to make a 14-karat gold bracelet weighing 350 grams?

Answers: 3

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