Para. 1 - The Relationship Between Special and Regular School Programs. Special education is an integral part of the total educational enterprise, not a separate order. In any school system, special education is a means of enlarging the capacity of the system to serve the educational needs of all children.
The purity of dental gold is usually 16 karat, but it is slightly more complicated to recycle than jewelry because it may include nonmetal content like tooth enamel or porcelain. The recycler will use a process like acid reduction or reverse electroplating to extract the gold from the nonmetal elements.
22k or 22 karat gold contains 92% - 24k or 24 karat gold is 100% pure gold. The mark .999 or .999 fine also means pure gold (100%). Here is a chart that tells the actual percentage of silver for the various silver marks:Sterling is 92.5% silver - .925 is 92.5% silver (same as sterling).lease sign in to vote on this Guide. Here is a chart that tells the actual percentage of gold for the various k marks: 9k or 9 karat gold contains 38% gold - 10k or 10 karat gold contains 42% gold. 12k or 12 karat gold contains 50% gold - 14k or 14 karat gold contains 58% gold.