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What element do all acids contain?

Acids are classified as weak or strong. A weak acid only partially ionizes in water. Not all of its hydrogen atoms break away to form hydronium, but a strong acid effectively fully ionizes. Hydrochloric acid, HCl, and nitric acid, HNO3, are examples of strong acids. Acetic acid, HC2H3O2, is a weak acid.\nAcidity is measured by the pH scale; pH means potential hydrogen although sometimes it is written as power of hydrogen. An acid has a pH of 0 to 7. Anything wit a pH higher than 7 is considered to be a base.\nFrench chemist Antoine Lavoisier first put forth the theory in the late 18th century ..

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Can two sperm fertilize one egg?

Fertilization is the process where two gametes fuse to form a single zygote. Gametes, such as sperm and egg cells, are haploid, meaning they have only half the normal number of chromosomes. The combination of one sperm and one ovum creates a zygote with a full, diploid set of chromosomes. Triploid babies have 69 chromosomes instead of the normal 46. While triploidy is believed to occur in 1 to 2 percent of all conceptions, such pregnancies usually result in spontaneous miscarriage or still-birth before reaching full term. In 2007, Time Magazine reported on a pair of twins who were apparently t..

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What is 173 centimeters in feet and inches?

For example, to find what 173 centimeters would be in feet and inches, multiply 173 centimeters by the conversion factor of 0.3937 inches per centimeter. The answer is 68.11 inches, which can be rounded off to 68 inches. To calculate the number of feet, divide 68 inches by 12 (the number of inches in a foot) The result is 5.67 feet, which can be rounded to five feet.\nThen simply multiply to get the final answer: Five feet times 12 inches per foot equals 60 inches, and 68 inches minus 60 inches equals 8 inches. Therefore the final measurement is 5 feet, 8 inches.\nCentimeters are a unit of mea..

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How did scientists apply Albert Einstein's equation E=mc^2?

Einstein's most famous equation describes the amount of energy that stands to be liberated when matter is converted to energy and the amount of energy needed to synthesize matter of a given mass. This understanding has informed models of the early universe, speculations about antimatter reactions and the study of quantum gravity. The equation is also routinely used to predict the yield of fission reactions in working nuclear reactors.

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Where are the mesenteric lymph nodes located?

Not only does the mesentery attach the intestines to the abdominal wall, it also holds them in place, explains Mayo Clinic. In doing this, it hinders the movement of the intestines into the abdominal cavity, notes Drugs.com.\nLymph nodes are small masses of tissue that help the body combat disease by destroying viruses and bacteria, states WebMD. The mesentery contains between 100 and 150 lymph nodes, adds the National Cancer Institute.

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What are some desert flowering shrubs?

Moon Valley Nurseries of Las Vegas lists several flowering shrubs that perform well in desert regions. The desert, Mexican and red Mexican bird of paradise shrubs, Caesalpinia, grow so well in the desert that they have naturalized in many areas of the Southwest. Calliandra, also known as fairy dusters, produce fluffy pink or red brush-like flowers. The lavender-colored flowers of the Texas ranger, or sage, emit a grape bubble gum fragrance.\nThe Arizona Municipal Water Users Association recommends planting low-water flowering shrubs such as jojoba, creosote bush and chuparosa.\nLike many other..

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Do humans have hair on their tongues?

Occasionally, a person is afflicted with what is called "black, hairy tongue," according to WebMD. In such a situation, an individual appears to have coarse, black hair on the tongue. In fact, the individual suffers from excessive yeast growth in the mouth and on the tongue. The condition is harmless and is remedied by a more consistent, thorough course of proper oral hygiene. The condition can also make the tongue appear to be covered in brown, green or yellow colored hair.

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What is the formula for calculating momentum?

Momentum is a type of movement that every object contains. Objects in motion all have momentum that depends on their velocity and their mass. An object at rest does not have momentum because it has zero velocity. When calculating momentum, one must also calculate the direction in which the object is moving, since momentum is known as a vector quantity. This means that if an object is moving backwards, it may have negative momentum. However, the negative is only referring to the object's direction, not its motion.

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What did Andre-Marie Ampere do?

Andre-Marie Ampere's most famous discoveries derive from an observation by a Danish physicist, Hans Christian Orsted, in 1820. This observation indicated that a compass needle is affected when going past a current carrying wire. Up until that point, it was thought that magnetism and electricity were unconnected. Once news of the discovery reached him, Ampere immediately began investigating. His first device used a single wire and a compass needle. He observed that the compass needle moved through a series of loops along a plane perpendicular to the direction of current when it was moved c..

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How far do tectonic plates move each year?

The speed with which a plate moves against its neighbors is determined by the rate at which the magma in contact with the plate's underside carries it along. Tectonic plates are not pushed, as the scale of their movement is far too great for their rocks to withstand a lateral force that shoves them along in one direction. Rather, the plates are carried along by currents in the molten parts of the lithosphere that are difficult to detect from the surface.\nThe engine driving this process is the residual heat of the Earth's interior. This heat drives convection throughout the Earth&apo..

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