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What is Hydrion paper?

Because solutions containing silver are not readable by an electronic pH meter without a special probe, using Hydrion paper to determine the pH of a solution is considered the easiest method.\nLitmus paper generally comes in two colors: red and blue. The blue paper stays the same when submerged in basic substances, while the red paper retains its color in an acidic environment. When red paper is placed in a base, or blue paper is placed in an acid, the paper color changes.

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What groups do biological species consist of?

The group terms describing a biological species are ordered from general properties of different types of life to specific species that are limited to breeding with one another or very closely related species. For example, the kingdom grouping separates animals from plants, bacteria and fungi, while the slightly more specific phylum grouping within the animal kingdom separates animals with spinal cords from invertebrates. At the genus level, organisms within the same genus are usually closely related and similar in nature, such as the large cats that are members of the Panthera genus.\nSome sp..

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What is urea synthesis?

The first is the reaction of liquid ammonia and gaseous carbon dioxide, which results in the formation of ammonium carbamate. The second reaction is urea conversion, where ammonium carbamate decomposes into urea. Urea is an inorganic compound which is colorless, odorless and highly soluble in water. It is also nontoxic. These properties make it useful in many areas, for example as a stabilizer in explosive mixtures and as a constituent of medicinal preparations.

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What is the function of the blind spot?

Scholarpedia goes on to say that there are a couple of hypotheses on why people do not notice their blind spots, also known as scotomas. The first hypothesis is that the brain fills in these blind regions, which suggests that both memory and imagination affect vision. This filling-in theory postulates that the brain adds objects, patterns and colors to the blind spot. The second hypothesis is that the brain merely ignores the blind spots.\nHowever, Reference.com points out that blind spots beyond those found normally in every eye may be a sign of retinal disease. These pathological scotomata c..

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What is the importance of rocks?

Rocks can broadly be classified into three categories: sedimentary, igneous and metamorphic rocks. These classes, which are based on the rock's origin, determine the structure and use of the rock.\nRocks are important in the making of many objects, such as plates, jewelry and toothpaste. Most houses are also built of materials obtained from rocks. Some of the most valuable rocks used in the manufacturing of items include graphite, slate, limestone, gypsum and pyrite. These types of rocks help in the production of stationery and the building of houses. Coal, which is an organic rock made m..

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What is a suture joint?

Infants have six cranial bones in their skulls that are held together by fibrous tissues referred to as sutures. These cranial sutures hold the bones of an infant’s skull in place until the bones grow together. The spaces in between the six bones are known as fontanelles and form the soft spots on a baby’s head. According to the Mayo Clinic, the bones of a baby’s skull fuse together around the age of 2.

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What are cinder cone volcanoes made of?

As the gas escapes, it carries lava high in the air. This ash material then cools into rock filled with air pockets before it strikes the ground forming a cone around the vent without sticking together. Lava rock from cinder cone volcanoes is popular in landscaping. The red rock is a lightweight material that is easy for the landscaper to transport and spread. In the United States, cinder cone volcanoes are visible in California, Oregon and Hawaii.

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What is the difference between horsepower and torque?

For a rotating engine with a lever arm, the torque is equal to length of the lever arm multiplied by the force pushing against the arm. This is then multiplied by the sine of the angle between the force vector and the arm. As angular speed is generally measured in radians per second, a more conventional expression of the speed of a rotating engine is in revolutions per second. Torque multiplied by revolutions per minute, divided by the constant 5252, yields an engine's power in units of horsepower.

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What are some uses for Dettol?

There are different Dettol products including surface cleaning wipes, surface cleanser sprays, hand sanitizer, hand wash, body wash and antiseptic liquid. Dettol suggest cleaning all food preparation surfaces with their products before and immediately after using raw foods including meat, fish, poultry and eggs. The company also suggests cleaning anything that may have been touched during the handling of raw foods, such as refrigerator door handles, cupboard door handles and taps, with disinfectant wipes.Dettol can be highly toxic to many animals, but particularly cats. The toxins found in Det..

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How far is Betelgeuse from Earth?

The most generally accepted distance to the star is measured by the signature of the radio emissions for its spectral type. Direct parallax measurements from Earth give the distance of Betelgeuse as approximately 495 light years. The parallax method is considered increasingly unreliable for objects greater than 100 light years away, but it is still widely used for some well-known heavenly bodies. Averaging the parallax measurement and the distance calculated by its emissions signature, a compromise distance of 570 light years is sometimes used to denote how far away Betelgeuse is from Earth.

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