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What is the science behind the Mentos and soda experiment?

The bubbles in soda are the result of carbon dioxide gas added during soda production. Because water molecules hold tightly to one another, they tend to form a protective layer around the carbon dioxide bubbles, making it difficult for bubbles to grow or for new bubbles to form. Dropping Mentos into soda causes the candy to begin to dissolve, breaking up some of the water's surface tension. With the surface tension broken, carbon dioxide bubbles grow and multiply on the candy's surface.\nThe reaction is further aided by the imperfections on the surface of Mentos. The tiny pits and bl..

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Do rats and mice live together?

Muricide is a stereotyped behavior, which means that most rats perform it in exactly the same way. Almost all rats eat the mouse after they kill it. Additionally, mice are stressed by the presence of rat odor; it makes them more easily startled than mice who are not exposed to rats or rat odor. Rat odor also has an effect on mouse reproduction. Female mice that can smell rat urine are likely to produce fewer litters than mice who cannot smell rats.

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What are some tips for learning to draw?

If drawings do not have any dark shadows it is because the pencil being used is too hard. Switching from a number 2 pencil to a B, 2B or 4B pencil can help achieve darker lines and shading.\nFlash photography has the tendency to flatten features and makes it hard to see an object or model's dimensions. If the person turns slightly to the side and there is sufficient natural lighting, more shapes and skin tone are revealed. It also helps to have the model wear a natural facial expression.\nSketching guidelines of facial features first helps to ensure that they are aligned properly. Unalign..

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What are some styles of mastectomy clothing?

The Chikara brand of clothing uses design elements to create the look of symmetry on a chest left asymmetrical by a mastectomy. Many garments feature dolman, kimono or raglan sleeves to avoid aggravating scarring from lymphedema. The front closures accommodate a post-surgical limit on range of mobility. Asymmetrical necklines and drapes of fabric conceal scarring and the changed landscape of the chest.\nIn general, ruffles, gathered necklines and draped fronts help downplay the look of the mastectomy. Likewise, large patterns or other design elements that run from the collarbone and over the c..

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What are some characteristics of a good wife?

Another characteristic of a good wife is trustworthiness. A husband needs to know he can trust his wife with concerns and personal secrets. If a husband and wife do not trust each other, bitterness and suspicion can arise in the relationship.\nSimilarly, a good wife has ambition. She has goals for her own life, and she possesses the confidence she needs to pursue those goals. A good wife puts her life's plans into action, although this may or may not include having a job. She has sufficient energy and desire to put her plans into action, set goals for herself and works to obtain those goa..

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When was Asiana Airlines established?

Asiana Airlines flies to 75 different international cities in 23 different countries, and the company also operates 25 international cargo routes to 27 cities in 13 countries. In addition to flights within South Korea, the company offers numerous trans-Pacific flights to the United States, flights to Europe, mainland China and a number of other Asian countries. In total, Asiana Airlines operates approximately 260 flights per day and services approximately 17 million passengers annually. As of December 2014, Asiana Airlines has an average yearly sales revenue of more than $5.5 billion. The comp..

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How much of the cost of Girl Scout cookies goes back into scouting?

All revenue, minus payment to the baker for the cost of the cookies, goes to the Council and troops.The Council determines the amount of the revenue that it shares with the participating Girl Scout troops. Cookie sales provide critical funding for Girl Scout councils. No revenue from cookie sales goes to the national Girl Scouts. However, the national organization receives royalties from its licensed bakers for use of its trademarks, based upon gross annual sales.

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What are some sources for historical data on 30-year treasury bonds?

The Wall Street Journal also offers historical bond rates, which differ from the government's information in an important respect. The Fed and Treasury show coupon rates, while the Wall Street Journal displays the current yield. For bonds, the coupon rate is the percentage interest rate paid to bondholders, while the current yield is the interest payment divided by the current market price of the bond, explains Investopedia.

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How do you fix scratched sunglasses?

Apply toothpasteDab nonabrasive tooth paste onto a cotton ball, and rub the glasses with the ball in circular motions for 10 seconds. When rubbing, apply moderate force to avoid scratching the glasses any more.Rinse the glassesWash away the toothpaste with cool water, and wipe off the excess toothpaste with a lint-free cloth. Blot the glasses dry, check the glasses for scratches, and repeat the process until the scratches disappear.Apply baking soda if necessaryFor stubborn scratches, pour 1 part water in a mixing bowl, add 2 parts baking soda, and then mix to form a paste. Dab the paste onto ..

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What are some philosophy ideas about truth?

The philosophy of objective truth states that reality is independent of the mind and unrelated to the thoughts of sentient beings. The objective truth philosophy also says that there is one true answer to every question regardless of which culture asks the question. Stoicism uses the idea of objective truth and asserts that truth is determined by reasoning. Scientific truth is given the highest priority in the philosophy of objective truth due to its emphasis on logic and evidence.\nRelativism states that no viewpoint or perspective has absolute truth because truth differs based on the specifi..

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