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How does a galvanic current work?

Galvanic currents are very popular in the beauty and anti-aging industries, and the primary function is to introduce the skin to water-soluble products through a specific process scientists call iontophoresis. There is both a positive and a negative pole with the use of a galvanic current. \nThe positive pole may help to close pores following a skin treatment, prevent inflammation associated with acne treatments, reduce redness and force astringent and other pH solutions into the skin. The negative pole may help to increase blood circulation to alleviate dry skin and force alkaline solutions i..

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What is the state of magnesium at room temperature?

Magnesium has the chemical symbol Mg and a density of 1.74 grams per cubic centimeter. It is silvery-white in color, malleable and ductile.\nMagnesium’s name originates from a region called Magnesia in Greece, where there was an abundance of ore containing this element. Magnesium is not found in nature in its pure state, but it is present in ores, such as dolomite and carnallite. It is also found in seawater.\nApplications of magnesium and its compounds include uses in the pharmaceutical industry, pyrotechnics, photography and lightweight aircraft parts.

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What are the only totipotent cells in humans?

Totipotent stem cells are the most versatile cells in the human body. One totipotent stem cell is capable of producing a placenta and any type of human body tissue. Totipotent stem cells can be extracted from an embryo and allowed to divide in a controlled culture, making them useful in genetic engineering, gene therapy, and transplants.\nOnce the first four days of embryonic development are over, stem cell division produces cells that are considered pluripotent. Pluripotent cells are able to develop into any kind of tissue needed by the fetus, but can't develop into the tissue needed for..

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What element has 47 protons in its nucleus?

Elemental silver is part of the transitional metals group in the periodic table and is situated next to palladium and cadmium at 46 and 48 protons, respectively. Silver has anywhere from 58 to 64 neutrons and 47 electrons. The atomic weight of silver is 107.8682, and it is stable at room temperature. Pure silver is the best known conductor of electricity and reflector of light of all known metals in the periodic table.

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What are the recent comet sightings?

The most recent great comet, Comet Lovejoy, discovered by Australian amateur astronomer Terry Lovejoy, was a member of a cluster of comets called the Kreutz comets that broke apart from a single large comet in the twelfth century. After Comet Lovejoy passed the Earth, it plunged through the Sun's corona and survived, exciting NASA and other scientists. This is remarkable because the comet's core is composed of ice.\nComet McNaught was distinguished by its long, spectacular tail visible for several nights in the southern hemisphere.\nComet Hale-Bopp, discovered by two amateur astronom..

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What is meant when a system has reached equilibrium?

The term chemical equilibrium applies to reactions occurring in gaseous or aqueous states. When reactants are solid or liquid, the concentrations do not change. At equilibrium, the reactions continue to occur, but they occur in both a forward and reverse direction at a constant state. The products are consumed to create reactants at the same rate they are produced. Physical changes, such as increasing the temperature, affect equilibrium.

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What is the density of stainless steel?

There are five major types of steel: alloy steel, low-alloy steel, stainless steel, tool steel and carbon steel. Stainless steel is the most dense of all of the different types of steel. It is used to produce an array of objects including kitchen equipment, surgical instruments, pipes, sinks and space capsules. The inclusion of nickel, chromium and other key elements is what lends stainless steel its ability to maintain its color while inhibiting rust and resisting corrosion.

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Why does cell division occur?

Every organism is composed of cells and originates from pre-existing cells. Mitosis is the process of generating new cells, and it involves distributing identical DNA to separate daughter cells. Karyokinesis is the phase of mitosis in which the nucleus divides, and the cytoplasm divides during cytokinesis.\nMitosis takes one to two hours. During interphase, which occurs between two cell divisions, the cell produces a copy of its chromosome material. Interphase is called the cell cycle when cell division precedes it.\nMitosis serves as a vital part of a multicellular organism’s growth. New ce..

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What is the relationship between chromosomes, DNA and genes?

Human bodies are made up of millions of cells. Every cell nucleus — the control center — has the complete coding of a person's genetic makeup. This genetic blueprint is located in the cells' genes. Every gene is a unique slice of genetic data. Each gene (made of DNA strands) on the chromosome has its own specific location and its own unique job. These genes contain the information for how we look: our eye and hair color, our height, the shape of our ears and the curl in our toes. Humans have 46 chromosomes composed of 23 chromosome pairs in every cell nucleus. One half of each pa..

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How do you convert cc to oz?

Write the conversion equationAs an example, try converting 7 milliliters (which is the same amount as 7 cubic centimeters) to ounces. Set up the problem as 7 milliliters x 1 ounce / 29.57 milliliters.\n\nOr, use the other conversion factor: 7 milliliters x .0338 ounces / 1 milliliter.Cancel common factorsThe common factors here are the corresponding units. They must be canceled out at this point to continue with the problem. In both examples, the milliliters are the common factor because they each appear on the inverse side of the fraction on opposite sides of the multiplication sign. After ca..

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