The alkanes are the hydrocarbons where all of the carbons are bonded to the other carbon atoms by single bonds. Alkanes may exist in a chain structure (either straight or branched) or in a ring structure. Alkanes that are acyclic (not in a...

An answer (derived from and, against, and the same root as swear) was originally a solemn assertion in opposition to some one or something, and thus generally any counter-statement or defence, a reply to a question or objection, or a correc...

"America the Beautiful" is an American patriotic song....

Assistive Computer Technology for Persons with Disabilities The personal computer (PC) can be the backbone of independence for millions of individuals with sensory, physical, and learning disabilities. Computers and information technology ...

1.) Purpose - The purpose of the experiment was to classify biological solutions as acids or bases and to measure the pH of a solution while learning to relate the pH scale to how acidic or basic a solution is, and learning to explain how...

The American National Standards Institute (ANSI) is a private, non-profit organization that serves as the United States administrator and coordinator for the voluntary private-sector standards system. Its statement of purpose is the "enhan...

The Apollo 11 mission was the first manned mission to land on the Moon. It was the fifth human spaceflight of the Apollo program and the third human voyage to the moon. Launched on July 16, 1969, it carried Commander Neil Alden Armstrong, C...

In the future, passenger flight into space is likely to become as routine as air travel. In the early twenty-first century, however, opening up the space frontier is the duty of a select cadre of highly trained individuals. In the United S...

The alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). All of the alkali metals are found in group IA (1) of the periodic table of the elements. Because chemical properties are determ...

Atomic number is defined as the number of protons in the nucleus of an atom. This concept was historically important because it provided a theoretical basis for the periodic law. Dmitri Mendeleev's discovery of the periodic law in t...

Affirming the consequent is a formal fallacy, committed by reasoning in the form:...

Ambiguity is the devil's volleyball. Emo Phillips If I take refuge in ambiguity, I assure you it's quite conscious. •Kingman Brewster, Jr. I fear explanations explanatory of things explained. •Abraham Lincoln Life is about not knowing,...

The Aardvark (Orycteropus afer) ("Digging foot"), sometimes called "antbear"[1] is a medium-sized mammal native to Africa. The name comes from the Afrikaans/Dutch for "earth pig" (aarde earth, varken pig), because early settlers from Europe...

An adobe is a natural building material mixed from sand, clay, and straw, dung or other fibrous materials, which is shaped into bricks using frames and dried in the sun. It is similar to cob and mudbrick. Adobe structures are extremely dura...

Agatho is the name of several people including: Pope Agatho, a pope of the Catholic Church. Pope Agatho of Alexandria, Pope of Alexandria and Patriarch of the See of St. Mark. Agatho, the martyred son of Hor and Susia....

Aruba is a 32-kilometre (20 mi)-long island of the Lesser Antilles in the southern Caribbean Sea, 27 km (17 mi) north of the Paraguaná Peninsula, Falcón State, Venezuela. It is part of the Kingdom of the Netherlands. As a s...

Aa is the name of a large number of small European rivers. The word is derived from the continental common Germanic word aha, cognate to the Latin aqua, meaning water. The following are the more important streams of this name: Two rivers in...

The Atlantic Ocean is the second-largest of the world's oceanic divisions; with a total area of about 106.4 million square kilometers (41.1 million square miles), it covers approximately one-fifth of the Earth's surface. The first part of i...

Republic of Angola República de Angola CAPITAL: Luanda FLAG: The upper half is red, the lower half black; in the center, a five-pointed yellow star and half a yellow cogwheel are crossed by a yellow machete. ANTHEM: Angola Avanti. M...

The demographics of Angola consist of three main ethnic groups, each speaking a Bantu language: Ovimbundu 37%, Mbundu 25%, and Bakongo 13%. Other groups include Chokwe (or Lunda), Ganguela, Nhaneca-Humbe, Ambo, Herero, and Xindunga. In addi...

The Economy of Angola is the fastest-growing economy in Africa,[2] but is still recovering from the civil war that plagued Angola from independence in 1975 until 2002. Despite abundant natural resources, output per capita remains among the ...

Transport in Angola comprises: if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } Railways total: 2,761 km narrow gauge: 2,638 km 1.067-m gauge; 123 km 0.600-m gauge (2002) there are three sep...

This article is part of the series: Politics and government ofAngola...

The Arctic Ocean, located in the northern hemisphere and mostly in the Arctic north polar region, is the smallest of the world's five major oceanic divisions and the shallowest.[1] The International Hydrographic Organization (IHO) recognize...

This article is for quotes about the province of Alberta , Canada . Alberta is one of Canada's prairie provinces . It became a province on September 1 , 1905 . Alberta is located in Western Canada , bounded by the provinces of British Colu...