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Where does aluminum belong in the metal family?

Pure aluminium is a silvery-white metal with many desirable characteristics. It is light and nontoxic as a metal, and it is also nonmagnetic and nonsparking. Aluminum is easily machined and formed and is often used decoratively. Aluminium is an abundant element in the Earth's crust, but it is not found naturally in nature. Hans Christian Øersted, a Danish chemist, was the first to produce tiny amounts of aluminum.

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What is 165 cm in feet?

On July 1, 1959, the United States, the United Kingdom, Canada, Australia, New Zealand and South Africa signed an agreement for the standardization of the yard and the pound. Based on this agreement, the length of the international yard in the United States is exactly 0.9144 meters. Since there are 3 feet in a yard, the length of a foot is consequently 0.3048 meters, and the length of an inch is 2.54 centimeters.

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What is the melting point of glass?

Silica glass, made from sand, has the highest melting point, but it is also the strongest glass. To reduce the melting point, commercial glass makers add sodium carbonate or soda and lime. Other ingredients that may be used include magnesia and alumina, as well as other ingredients that alter the quality, texture and color of the glass.

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What is a soft metamorphic rock composed of the mineral talc called?

Humans have been carving soapstone for thousands of years to create works of art and molds for tools and weapons. It is especially good as cookware, it retains heat and releases it slowly.\nSoapstone is easy to carve and often used for kitchen counters and bathroom vanities. Unlike stone such as granite or marble, soapstone is nonporous and resists etching by acids and alkalines. Homeowners usually purchase the harder types of soapstone for countertops and backsplashes.

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Which element has the highest melting point?

Tungsten was first discovered in 1783 by Fausto and Juan Jose De Elhuyar. It was originally named "wolfram," after the tungsten mineral wolframite. Today, the element’s name is simply tungsten, and it is found naturally as a steel-gray to white metal. This element also has the lowest vapor pressure of all of the metals on the periodic table. Tungsten is used as a corrosion resistance product because it can withstand attack by many acids.

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Why must chemical equations be balanced?

When balancing a chemical equation, the Law of Conservation of Mass is used to determine that the same number of atoms of each element is present on each side of the equation. Atoms are counted by multiplying the subscript times the number in front of the molecule, atom or compound, which is known as the coefficient. The coefficient represents the ratio of the particular reactant or product, meaning how many times it is consumed or produced. In balanced equations, only whole numbers are used as coefficients. The coefficient or subscript is not written out if they equal 1.\nBalanced chemical eq..

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What is the sliding filament theory?

A nerve impulse triggers the release of a chemical that causes calcium to be released from the endoplasmic reticulum. The calcium then binds with troponin. This molecule is now able to able to connect to actin. Energy from adenosine triphosphate, or ATP, permits the tropinin/calcium/actin molecule to pull the actin filaments so that the thin filament glides across the thick filament and causes the muscle to contract. The length of the contraction depends on how much ATP and calcium are present.

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What are some effects of plastic pollution?

Plastic pollution has a tremendous effect on the health of world waterways and oceans and the living organisms in these bodies of water. Massive microdebris buildups such as the "Great Pacific garbage patch" in the North Pacific Gyre have uniformly negative effects on food chains and biodiversity in affected regions. Although marine animals are disproportionately affected, seabirds also often mistake plastic for food and suffer ulcers, malnutrition, reproductive and digestive issues, and hormone imbalances.\nHumans are susceptible to several diseases and afflictions that become more prevalent ..

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How do you make a Pac-Man costume?

This creative Pac-Man costume uses the wearer's body like a large Pac-Man board, and makes his or her head into Pac-Man. It is also much cheaper than a store bought costume.\n\nEveryday household objects such as scissors, a ruler, a glue gun and a long-sleeved black shirt are used to craft the costume. The other components, listed above, may need to be purchased at the store.\n\nTo craft the costume:\n\nUse the ruler and a pencil to sketch out a maze pattern on the shirt.\nFollow along the lines with the red paint pen to finalize the maze.\n Next, cut out white circles of felt for the pow..

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What is the structure of a celery plant?

Vascular bundles provide additional support for the plant and are composed of xylem tissue and phloem tissue. Xylem tissue carries water through the plant, and the phloem tissue carries the nutrients through the plant system. The structure of the cells within the vascular bundles, such as xylem tissue cells and phloem tissue cells, combine with collenchyma tissue cells to give the celery stalk its stiffness and crunch.\nAll parts of the celery plant are edible, including the roots, leaves, leaf stalks, flowers and seeds. The leaf stalk, or petiole, has a subtle flavor and crisp texture that ma..

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