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How do you convert torr to kPa?

One torr is defined as exactly 1/760 atm, while 1 atm is defined as 101.33 kPa. The torr is attributed to, and named after, Evangelista Torricelli. Torricelli is know for his work with the barometer, and his studies of atmospheric pressure led to the birth of meteorology. The torr was originally representative of standard atmospheric pressure, but it was later redefined as 1/760 atm as more was learned about the effects of temperature and gravity on the element mercury, and the pascal became the new standard of measurement for atmospheric pressure.

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How does meiosis lead to increased genetic variation?

People inherit many of the same genes from their parents. These genes, called traits, produce identical features in parents, offspring and siblings. These characteristics give family members resemblance in certain ways, such as having the same hair color and nose shape. Traits refer to identical genes that pass through generations, giving immediate family members and extended family members distinct features.Similarities and differences in genes occur during the process of reproduction. With the coupling of male and female sex cells, certain types of information pass along to offspring. The ex..

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What makes the seasons change?

The axis of the Earth is an imaginary pole that goes from the top to the bottom, and this pole does not stand up straight. The Earth makes one complete spin around the pole every day, which is why there is day and night. The tilted axis always points in the same direction, so during different times of the year, different parts of the Earth will experience the Sun's direct rays.

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What is data analysis in a science project?

To achieve averages, multiple trials of the experiment must be performed. Raw data is collected from each trial and reviewed. A person must have a critical eye when analyzing data. Any possible omissions or mistakes should be considered before calculating and graphing occurs. After all data is processed, a person sometimes concludes that the hypothesis was incorrect, and a revised one is needed.

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How would you determine whether milk contains reducing sugar?

Investigators start the test by mixing 2 milliliters of Benedict's reagent with 1 milliliter of milk in a test tube. The tube containing the combined solution is then heated in a boiling water bath for three minutes. If reducing sugars are present, the copper iron oxidizes them. This forms a carboxylic acid and a reddish precipitate of copper oxide that turns the solution orange, red or brown.\nMilk produced from mammals tests positive because it contains the reducing sugar lactose whether it's skim milk, whole milk or cream. Typically, soy milk tests negative because the amount of r..

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How many electrons does scandium have?

Scandium has four energy levels. Two electrons are contained in its first energy level, eight are contained in its second, nine are contained in its third and two are contained in its outer energy level.\nScandium was discovered in 1879 by Lars Fredrik Nilson, a chemist from Sweden. The element was named after Scandinavia. Scandium is sometimes used in the aerospace industry because it is a soft, light metal. Due to the high cost of isolating pure metallic scandium, it does not have a general use.

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What are the structural isomers of C4H10O?

Structural isomers, also known as constitutional isomers, represent all known and possible variations of a compound. All the isomers have the same molecular formula, but each has a different arrangement and bonding pattern. The chemical and physical properties of each isomer can also differ greatly. Sometimes structural formulas are simplified to form condensed structural formulas, in which the bonds to each carbon atom are omitted.\nWhen referring to structural formulas of organic compounds, different groups of carbon atoms are distinguished by the number of other carbon atoms that each carbo..

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What is the specific gravity of gasoline?

Gasoline, also known as petrol, is the most common fuel used in modern vehicles. It consists of several organic compounds, and is obtained from petroleum through a process called "fractional distillation."\nSpecific gravity is a dimensionless parameter that represents the ratio of the density a substance to the density of water at 4 degrees Celsius. The specific gravity of gasoline is less than 1, which means that it has a density less than water and is lighter than water.

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What is nebular theory?

The nebular theory describes the formation of the sun, planets, moons and asteroids around 4.5 billion years ago from a nebula cloud comprising dust and gas, according to Universe Today. Gravity condensed the gas into dense regions, which grew into clumps of matter. The nebula cloud spread to form a rotating disk that became the plane of the solar system, which is still in evidence because all planets orbit around the sun in the same direction and plane.Formation of the sunThe least amount of centripetal force was at the center of the rotating disk, so most of the mass from the nebula cloud be..

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Does cedar wood rot?

When used as a fence post, cedar wood rots when it has been encased in cement in a post hole. Cedar also stands up well to moisture and resists damage caused by different insects better than other wood types. In addition, this porous wood absorbs noise and is known for its long-lasting qualities. Cedar wood used for home siding is a high-demand product as it gives a prestigious and elegant finish to homes.

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