A health savings account (HSA) is a tax-advantaged medical savings account available to taxpayers in the United States who are enrolled in a high-deductible health plan (HDHP). The funds contributed to an account are not subject to federal income tax at the time of deposit. health savings account (HSA) is a tax-advantaged medical savings account available to taxpayers in the United States who are enrolled in a high-deductible health plan (HDHP). The funds contributed to an account are not subject to federal income tax at the time of deposit.
Hans Christian Oersted, a Danish chemist, was the first to produce tiny amounts of aluminum in 1825, German chemist Friedrich WÃ¶hler developed a method that produced enough to study the metal's basic properties in 1845.
Aluminum is too reactive chemically to occur in nature as the free metal. Instead, it is found combined in over 270 different minerals. The chief ore of aluminum is bauxite, a mixture of hydrated aluminum oxide (Al. Metallic aluminum was first prepared by Hans Oersted, a Danish chemist, in 1825.He obtained the metal by heating dry aluminum chloride with potassium metal.luminum is too reactive chemically to occur in nature as the free metal. Instead, it is found combined in over 270 different minerals. The chief ore of aluminum is bauxite, a mixture of hydrated aluminum oxide (Al. Metallic aluminum was first prepared by Hans Oersted, a Danish chemist, in 1825.