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How does calcium react with oxygen?

Calcium is an alkaline earth metal. It is soft and silvery-white in appearance. It is the fifth-most commonly found element in the Earth's crust, making up approximately 3 percent of the planet's oceans and soil. Calcium does not exist on its own in nature, but is found in compounds, including calcium carbonate (limestone), calcium sulfate (gypsum), and calcium fluoride (fluorite).\nCalcium is a crucial component of a healthy body. It plays an important role in building strong bones and healthy muscles. Calcium is also essential in the transmission of nerve impulses to the nervous sy..

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What is the difference between sand and silt?

Sand and silt are both examples of granular materials, which are collections of separate particles and distinct particles, such as raw flour in a container or jellybeans in a jar.\nThe most common forms of sand and silt are composed of tiny fragments of quartz. Quartz is a mineral that forms from volcanic activity deep beneath the crust of the Earth. Through erosion and weathering, quartz crystals are slowly broken up over millions of years. These fragmented crystals are deposited by rivers and oceans onto beaches and riverbanks, which becomes the sandy shore. Quartz crystals that are weathere..

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Is citric acid soluble in water?

At lower temperatures, citric acid retains its high solubility. For example, at 68 degrees Fahrenheit, close to normal room temperature, citric acid has a solubility in water of 59 percent. Because of its high solubility, citric acid is preferred in its anhydrous crystal form by the food industry, where it is widely used to add acidity to products. The anhydrous crystals are much more stable and can be stored for long-term, industrial use without fear of the acid melting away due to contact with moisture in the air.

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How many bases are in a codon?

Each protein sequence has a start codon and a stop codon. RNA sequences use the base uracil instead of thymine, as the bases are copied from the DNA sequence.\nThe process of cellular protein formation is central to understanding how many antibacterial drugs work. Many drugs, such as the tetracycline class, work by interfering with the translation of RNA into amino acids. This disrupts the development of proteins, resulting in a reduced rate of reproduction in bacteria.

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Is iron water or fat soluble?

The ionic state of iron can affect whether the compound dissociates in water and becomes water soluble. For example, Iron II is soluble when bonded to oxalate, but Iron III is insoluble when bonded with the same polyatomic ion. Likewise, Iron III Ferricyanide is water soluble but Iron II Ferricyanide is not. Iron II and Iron III have charges charge of +2 and +3 respectively which causes them to be needed in different proportions in ionic bonds.\nIron is a trace mineral that can be found in certain types of foods and is needed for specific biological processes in the human body. Too much iron c..

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What are Saturn's gases?

Scientists believe that Saturn has a rocky core beneath its layers of gases and clouds that is somewhat larger than Earth.\nHydrogen is not only the most abundant gas in Saturn's atmosphere, it is the most abundant gas in the universe. Scientists believe that 90 percent of the universe that can be seen is made out of hydrogen. Hydrogen is made out of one proton and one electron.\nHelium was named after Helios, the Greek sun god, because it was discovered on the sun before it was found on Earth. It is the second-most abundant gas after hydrogen. Helium is considered a noble gas because it ..

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What is the top of a mountain called?

The upper reaches of a mountain are typically composed of bare rock and snow, even in tropical climates. Mountain peaks receive a greater amount of precipitation than low lying areas as a consequence of the cooler air found at higher altitudes. Cold air is not able to carry as much moisture, leading to more frequent rainfall. The cold temperatures also prevent the snow found at the mountaintop from melting.

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What makes breath smell like garlic?

Dr. Harold Katz explains that garlic oils and extracts that are found in certain supplements can cause the breath to smell like garlic. Dr. Katz points out that selenium toxicity is rare and typically occurs in individuals who are exposed to selenium in the workplace. A common sign of tellurium poisoning is garlic-tinged breath. Dr. Katz indicates that both elements are found in the same periodic table group as sulfur, an element found in garlic that contributes to the actual scent of garlic breath.\nAccording to Dr. Katz, the easiest way to treat garlic breath caused by garlic ingestion or th..

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What are characteristics of a polar molecule?

Water, or H2O, is an example of a polar molecule. The oxygen atom in the water molecule has a greater electronegativity than the hydrogen atoms it is covalently bonded to, resulting in a dipole shift where the bond is negatively weighted on the oxygen end and positively weighted the hydrogen end. The shift in electrical charges within the molecule is subtle and results in an overall electrically balanced structure with a nonlinear bent shape. The shape of the molecule is just as important as the charges associated with each end when it comes to determining whether a molecule is polar or not.\n..

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What does extraneous stimuli mean?

There are many symptoms to inattention on top of the distractions from extraneous stimuli, including the inability to sustain attention during tasks or play, forgetfulness, appearing to not be listening when spoken to and the inability to complete tasks, such as homework or chores, and not just because they are opposed to doing them. With hyperactivity, there are other symptoms including fidgeting, talking excessively, running around and climbing in situations where it is inappropriate and difficulty in playing quietly.ADHD cannot be cured but it can be eased by adapting the environment or by ..

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