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How much of an alloy that is 20 percent copper should be mixed with 100 ounces of an allo that is 60 percent copper in order to get an alloy that is 30 percent copper?
The question can be rewritten as the following equation: (20%x + 60%100)/(100+x) = 30% Where x is the amount of 20% copper you need to add. This equation can be solved by first multiplying both sides by (100+x) to get: 20%x + 60%100 = 30%100 + 30%x Now 30%100 can be subtracted from both sides 20%x + 30%100 = 30%x Now 20%x can be subtracted from both sides 30%100 = 10%x Now both sides can be divided by 10% 300 = x Thus you need to add 300 ounces of 20% copper alloy in order to get an alloy that totals 30% copper.
What is the solute in a brass alloy containing seventy-five percent copper and twenty-five percent zinc?
the solute is zinc because it is smaller in quantity
A certain alloy contains 5.25 copper how much is there in a piece weighing 200 pounds?
If an alloy is 5.25% copper, convert 5.25% to decimal as .0525. Multiply .0525 by 200 to yield 10.5 pounds.
What percent of 14K B is gold?
Gold is weighted in Karats. Pure gold is 24K, meaning it is 24 parts gold and contains no alloy). 14K gold is 14 parts gold and 10 parts alloy (usually copper, silver, and zinc - though other metals are used as well). The alloy makes gold stronger (gold is a very soft metal) and can change the color (more zinc will make white gold, more copper makes rose gold, and more silver makes green gold).
What is the value of a 1994 copper nickel?
All 1994 US nickels were struck in the same alloy of 25% nickel and 75% copper. Any 1994 nickel that's copper in color was almost certainly damaged by exposure to heat or chemicals, or was plated with that metal. You can also check the coin's weight; it should be 5 grams. If it's very much different from that amount you should have it inspected in person by a dealer or knowledgeable collector.
