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What are some empirical formula examples?

The only stable form of HO that can exist is the negatively charged HO- ion. Some chemicals have the same molecular formula and empirical formula, such as water, whose formula is H2O. This is because the lowest common denominator of the subscripts in H2O is one, and dividing any number by one returns that same number. Empirical formulas were more commonly used in the past when the only available identification technique was to burn the substance and measure the products of burning. This could tell the chemist the ratios between different elements in the molecule but not the absolute number of ..

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What is a stimulus in biology?

An example of a stimulus is an individual placing a hand on a hot surface. The temperature is the stimulus, and the individual then protects themselves by pulling their hand away. Other stimuli include the ability of an organism to detect the pH, salinity or light in their environment. All organisms must maintain homeostasis, a stable internal environment. Homeostasis can only be achieved through sensing and responding to the environment.

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What is the equation for apparent weight?

The apparent weight of an object when it is at rest, free falling or moving at constant speed is equal to its normal weight because the object's acceleration is zero. When the object is moving upward, for example in an elevator, the object's apparent weight is heavier. This is due to the additional force necessary to push the object up, represented by mass times acceleration with positive acceleration value. If the object is moving downward, its apparent weight is lighter, since the object is actually decelerating and thus has a negative acceleration value.

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What part of the world has the best climate?

The best place to live is one where the climate is never severe. Factors such as daily temperature, hours of sunshine, precipitation, wind and humidity must be considered.\nPlaces located along the equator tend to have very high temperatures. Summers can be very hot and uncomfortable. In the higher latitudes, it can get very cold, as the winters are severe.

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What is a Black Moon?

Black moons have ritualistic importance to people who subscribe to some forms of pagan religions, particularly Wiccans. Members of these religions believe certain actions, such as spells and rituals, are more potent when performed on the night of the black moon.\nIn 2014, black moons occurred on Jan. 30th and March 30th due to the two new moons in each of those months.

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How do earthquakes affect the environment?

Usually, earthquakes change habitats in subtle ways. For example, if an earthquake’s epicenter is near a forest, it may knock trees down. When this happens, it allows sunlight to penetrate the canopy, which allows the growth of different types of plants. These new plants support a new population of animals.\nSometimes, earthquakes can create new habitats, ecosystems and ultimately species. For instance, if a portion of the coastline breaks away from the mainland during an earthquake, it will take all of the plants and animals along with it. Over time, the habitat will change in subtle ways, ..

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How do eubacteria reproduce?

At the start of binary fusion, the genetic material of a eubacteria cell is copied so that two sets of chromosomes are formed. These two copies of chromosomes move to separate nucleotide regions, and the plasma membrane begins to grow between the two copies. Once these copies double their original size, the plasma membrane pinches together, separating the original eubacteria cell into two daughter cells. These two daughter cells are independent of each other but can sometimes remain connected. This connection is what forms colonies in some species. Since the cells produced through binary fusio..

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What are the wavelengths of the IR spectra for Acetanilide?

Acetanilide, also known as 2-chloro-4-tert-butyl, is an odorless solid with a flake-like appearance; it has a molecular weight of 225.715 and its melting point ranges between 1100 C and 1150 C. Acetanilide is mostly used in the manufacturing of drugs and dyes; it is also used as a stabilizer in hydrogen peroxide.\nAcetanilide has two bonds that are formed within its structure; these are the N-H bonds and the C=O bonds. N-H amide bonds have a stretching absorption power of above 3300cm-1, while C=O have a bending absorption power of 1700cm-1.\nThe frequencies at which these absorptions of IR ra..

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What is hydrochloric acid used for?

Hydrochloric acid, or muriatic acid, is an extremely corrosive compound used in the production of chlorides, fertilizers and dyes, and in a wide range of applications in the photographic, textile and rubber industries. It is also used to prepare various food products and to regulate the pH level in manufacturing and treatment processes. It can be used to remove rust from steel sheet or coil for industrial processing and to manufacture compounds such as Vinyl Chloride and Dichloroethane, which are used to produce PVC, or Polyvinyl Chloride. It is also used to produce inorganic compounds for wat..

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How do you find the flood zones in Houston?

To find flood zones in Houston, Texas, follow the steps below:Visit the websiteEnter the website for the Harris County Flood Control District, HCFCD.org, in a browser to go to the organization's main page. Click on "Harris County Flood Education Mapping Tool" in the "Interactive Mapping Tools" drop-down menu in the upper right of the screen.Display the mapClick on the displayed map to open the Harris County Flood Education mapping tool. Click on "I accept" to accept the disclaimer. View the flood zonesClick on the magnifying glass to zone into specific areas of Houston to view the flood z..

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