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What are the most common elements on Earth?

After the most abundant elements, most elements become much harder to find. Other than the top four elements, plus calcium, sodium, magnesium and potassium, no other element makes up more than 1 percent of Earth. The ninth most common element is titanium, at roughly 0.5 percent, followed by hydrogen, at 0.14 percent. This is in stark contrast to the elements in the Milky Way Galaxy, where hydrogen is by far the most abundant at approximately 74 percent.

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What is the word equation for wood combustion?

Wood is made up of cellulose, an organic compound that is a polymer or macromolecule. Thermal decomposition of cellulose is the reason why wood ignites and combusts under the influence of heat. Another name for thermal decomposition is pyrolysis. \nIn the pyrolysis process, the application of high heat to wood causes the cellulose to begin its decomposition. The decomposing products react with the oxygen in air to produce more heat and a chain reaction that culminates in the release of the products carbon dioxide, water in gaseous form, ash residue and heat.

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What is 80 grams in milliliters?

For example, 80 grams of pure water at 39.2 degrees Fahrenheit is equal to 80 milliliters. When that same mass of water reaches its boiling point at 212 degrees Fahrenheit, its lower density means that its volume expands to 83.47 milliliters.\nDifferent densities mean different volumes for 80 grams of other substances as well. Eighty grams of butter is 92.49 milliliters, while 80 grams of maple syrup is 58.74 milliliters. Eighty grams of dry sand is 62.45 milliliters, but 80 grams of packed wet sand is much denser and has a volume of just 38.42 milliliters.

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How hot is the inner core of the Earth?

The Earth's inner core is composed mostly of iron accompanied by trace elements. Due to the incredible pressure around the inner core, the ball of iron remains solid despite the temperatures. Surrounding the inner core is the outer core, which contains liquid iron ranging from 7,200 to 9,000 degrees Fahrenheit. It is responsible for the planet's magnetic field. Above the outer core rests the mantle, which is solid rock. The solid rock, however, is slow moving and still extremely hot. The Earth's crust is the top-most layer.

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What is CuSO4 x 5H2O?

In contrast to basic copper sulfate, a bactericide and fungicide compound that is insoluble in water, copper sulfate pentahydrate is water soluble and dissolves even faster in boiling water. Potential health effects caused by prolonged exposure to this compound include eye and skin irritation, allergic reactions and nausea.\nData from the National Pesticide Information Center states that the only two types of copper sulfate products contained in currently registered pesticides are basic copper sulfate and copper sulfate pentahydrate.

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What are all the finger and toe bones called?

In the fingers, the proximal phalanges are the ones closest to the hand. The distal phalanges are located at the fingertips. The middle phalanges are located between the proximal and distal phalanges. The thumbs do not have middle phalanges.\n\nThe toes are similar to the fingers, with proximal phalanges at the bottoms of the toes and distal phalanges at the tips of the toes. The middle phalanges are in between the two. The great toes, like the thumbs, do not have middle phalanges.

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Which common mineral is composed entirely of silicon and oxygen?

The characteristics of Quartz include a glass-like appearance, a conchoidal fracture pattern and relative hardness. All varieties of quartz have essentially the same crystalline structure and chemical composition.\nOne type of quartz is rose quartz, which has a rose or pink color. Citrine, amethyst, smoky quartz and milky quartz are other common types of quartz.

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Why is copper important?

Children born in 2014 are likely to use 1,750 pounds of copper during their lifetimes for transportation, housing, consumer items and electrical purposes. Copper commonly comes from minerals such as cuprite, azurite, chalcopyrite, bornite and malachite. Copper is soft and able to transmit electricity and heat very effectively. It can't really be damaged by water and is widely used in construction. Because bacteria can't grow on it, copper is also used in hospitals.\nDuring the Stone Age and Copper Age, copper was used for tools and jewelry. In 3000 B.C., it was mixed with metals such..

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True or false: can you see, smell and taste microorganisms?

While all the bacteria and archaea are microorganisms, only some fungi and algae are. Some animals, such as \trotifers and almost all protozoa, are microscopic. The tiny organisms live in soil, the atmosphere, on the ocean floor and deep inside rocks. Microorganisms aid decomposition in the recycling of nutrients in ecosystems. Airborne microorganisms may influence precipitation and weather. Others are active in the nitrogen cycle.

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Why does fluid move against gravity in an osmometer?

Osmosis occurs when two solutions of different concentrations are separated by a semi-permeable membrane, which is permeable to the smaller solvent molecules but not permeable to the larger solute molecules. The solvent tends to diffuse across the membrane from the higher concentration solution to the lower concentration solution. Osmosis is of great importance in biological systems, where the solvent is the water in which many of the essential molecules for biological processes are transported. The energy that drives this process is usually discussed in terms of osmotic pressure or strength. ..

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