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What is the Lewis structure of acetone?

The number of valence electrons an atom has helps determine the Lewis structure of a molecule. Carbon has four valance electrons, oxygen has six and hydrogen has one. The oxygen shares electrons with carbon through double bonds, accounting for two of oxygen's valence electrons; the other four are accounted for through lone pairs. Acetone is also an achiral molecule, meaning that its mirror image is superimposable upon itself.

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How many pounds are equal to 2 tons?

The short ton in the United States is often used to measure the weight of vehicles and is 2,000 pounds. A short ton is equal to 0.907 metric tons. A long ton, which is used in the United Kingdom and other countries, is 2,240 pounds. A long ton is equivalent to 1.016 metric tons. While two short tons equals 4,000 pounds, two long tons equal 4,480 pounds.

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What is cystitis?

UTIs are often caused by external bacteria, such as E. coli, entering the body and reproducing, but may also be caused by sexual intercourse, states WebMD. Cystitis may also be caused by medications such as those used in chemotherapy, radiation, catheter use, hypersensitivity to certain chemicals or due to other health problems such as diabetes or kidney stones.\nSymptoms of cystitis include a strong urge to urinate; a burning sensation during urination; bloody, cloudy or strong-smelling urine; feeling pressure in the lower abdomen; and a low fever, notes Mayo Clinic. Cystitis is diagnosed usi..

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What are the factors that affect rate of osmosis?

Osmosis is a process where a solvent, used to dissolve a solute, migrates through a semipermeable membrane from a low-concentration side to a high-concentration side, in terms of the solute concentration. A semi-permeable membrane does not allow the solute to pass through, only the solvent. Since the amount of solute on each side is uneven, the solvent flows through the membrane to even the concentration on both sides.

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What are the differences between acidic dye and basic dye?

Acidic dyes are more often used in labs as a dye bath and are effective in staining textiles because they are made up of protein fibers. These dyes bind best to animal hair such as wool or alpaca hair. Basic dyes work better with staining synthetic materials like nylon, polyester, modacrylic and olefin.

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How is an animal cell like a car?

A car is enclosed in a metallic body casing to hold its shape and prevent the internal contents from falling off. Similarly, a cell is enclosed in a cell wall that holds its shape and acts to prevent entry of unwanted substances into the cell.\nThe cell membrane functions like the doors and windows of the car that allow entry and exit of substances. Just like a car needs a driver to control it, an animal cell has a nucleus that controls the cellular activities. The trunk of a car is used to store luggage; a function that is similar to that of the vacuoles which store water, food and waste prod..

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What gland produces testosterone?

Tiny amounts of this hormone are also secreted by the adrenal glands. Testosterone is the primary androgen in males, and increased levels of this hormone during puberty result in the development of facial hair, increased height and muscle mass, a deeper voice and an Adam's apple. Testosterone is also essential for the healthy development of the male reproductive system.

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How is fire made?

Once burning starts, the process emits heat and light until one of the three components, fuel, oxidant or energy, are removed, according to Dr. Anne Helmenstine for About.com. Wikipedia further explains that the emitted light can be present in the form of flames. The main components of the flames are carbon dioxide, water vapor, oxygen and nitrogen.

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What is acid shock?

Sulfuric and nitric acids get into the atmosphere from factory and vehicle emissions. After they combine with rain, snow and fog, the precipitation becomes acidic. When the acids trapped in snow enter water, they affect the new aquatic plant and animal life that develop during the spring. For example, if a water source becomes too acidic, sometimes frog eggs do not hatch. Acids also interfere with other chemicals in water, such as calcium. Crustaceans and mollusks need the nutrient to develop shells, but in acidic water, it is often unavailable.

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What is the electron configuration of silicon?

In the periodic table of elements, silicon is represented by the chemical symbol Si, atomic number 14 and relative atomic mass of 28.085. It contains 14 protons and 14 electrons, with its most abundant isotope containing 14 neutrons.The electron configuration of an atom, which is the fundamental unit of an element, illustrates the number of electrons found on each orbital shell and subshell of a neutral atom. The four types of orbitals are labeled s, p, d and f. The subshells that correspond to these orbitals can hold up to two electrons for s subshell, six electrons for p subshell, 10 electro..

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