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Is neon a solid, liquid or gas?

Both the melting and boiling points of neon are below minus 400 degrees Fahrenheit, so it isn't often seen as a solid or liquid. The bright colors used in neon lights and signs are caused by the red color emitted by the gas when it is charged with electricity and mixed with other compounds to give a wide array of colors. Although neon is one of the most abundant chemicals in the universe, it is rare on Earth.

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What is gold made of?

To indicate the fraction of gold contained in a particular piece, gold is stamped with a karat (K) number. Because pure gold is defined as 24K, an 18K gold necklace, for instance, is made of 18 parts pure gold and six parts other metals. Typical alloy choices include copper and silver, though platinum, aluminum and iron can be used to achieve particular colors.

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How do you read an online 12-inch ruler?

Online rulers are more accurate but less convenient than physical ones. An online ruler website recognizes your monitor's resolution and adjusts the size of the ruler image on the screen with a high degree of accuracy. Physical rulers, typically made out of wood or plastic, wear over time and become inaccurate. Though not as precise, many prefer physical rulers because they are easy to transport and do not require electricity for measurements.

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What makes a mammal a mammal?

All mammals are vertebrates, which means that they have a spine and a spinal cord. They are all also endothermic, or warm-blooded. This allows them to regulate their own body temperature and live in a wide variety of climates on Earth. Mammals also have hair covering their bodies. The hair may be thick or thin depending on the mammal. Finally, all mammals produce milk to feed their young. This provides their babies with nutrition and allows mothers to stay with their babies and teach them important life skills they need to survive.

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What are different types of solvents?

According to Master Organic Chemistry, solvents are liquids that provide the medium for a chemical reaction and serve one of two purposes. Solvents either dissolve reactants or participate in another reaction. Dissolving solvents are some of the most common, and they can be found in numerous household cleaning products and other items that require the dissolution of another substance.\nThe Dow Chemical Company explains that terpenes are a common solvent in the hydrocarbon family that is commonly used in cleaning products. Alcohols and ketones are also frequently used in the cleaning industry d..

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How is ammonium sulphate made?

Ammonium sulphate is a white crystalline odorless salt. It is widely used as a fertilizer as it contains 24 percent sulphur and 21 percent nitrogen, which makes it good for increasing the fertility of the soil. It makes the soil alkaline by lowering its pH value. It is also used as a food additive and in the preparation of other salts of ammonium.\nAmmonium sulphate readily dissolves in water but not in organic solvents such as alcohol, acetone and ether. At 0 degrees Celsius, about 70.6 grams of ammonium sulphate dissolves in 100 milliliters of water. The molar mass of ammonium sulphate is 13..

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What happens if people do not recycle?

One of the things that may happen if people do not recycle is that the government may lose out on revenue opportunities. Recycling processes are able to create employment for people and generate significant revenue for the government.Another thing that may happen is that the economy of a region may suffer. If a region is filled with dirty plastic and other waste materials, tourists are unlikely to visit the place. Everyone likes visiting areas with clean, beautiful sights.If waste is not recycled properly, it may introduce harmful toxins into the water or land. This may cause marine animals to..

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What is the linear speed of Earth in its orbit about the Sun?

The linear speed, or velocity, at which Earth travels around the Sun can be calculated by assuming that Earth travels in a circle around the sun at a radius of 149.59 million kilometers. The velocity can then be found by using the formula for the circumference of a circle, which is 2 x pi x radius. This gives the velocity in years, which can then be converted into hours or seconds.

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What are the dangers of radio waves?

Some studies claim that the radio emissions from power lines, microwaves and radio communications contribute to the growth of tumors and are linked to increased headaches and brain disorders in those with higher exposure. The Federal Communications Commission, which has backed several studies, follows a recommended specific absorption rate of 1.6 watts per kilogram of emission as the public limit of radio frequency absorption from mobile devices. The FCC states that there are no scientific links between cellphone radiation and any illnesses, but the commission's website does provide some ..

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How much does liquid nitrogen generally cost?

Liquid nitrogen tank prices can vary to suit the user's needs. The bigger the tank, the more expensive the unit costs. A standard hospital liquid nitrogen tank can cost anywhere from $349 to $999 dollars. The tanks are expensive because they consist of materials that are capable of containing subzero temperatures. Liquid nitrogen has a lot of different applications, ranging from cryogenics to food preparation.

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