LAB 6. ACIDS AND BASES: PH AND BUFFERS PURPOSE: To determine the pH of common acids and bases using a pH meter‚ pH paper‚ and red cabbage indicator. To test the effect of adding an acid or base to a buffer solution. SAFETY CONCERNS: Always wear safety goggles. Wash with soap and water if skin contacts acids or bases. ACIDS: An Acid is a substance that when dissolved in water will produce hydrogen ions‚ H+‚ in the solution. An acid that does not contain carbon is called an inorganic
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Effects of Rain in Rush Hour Rush hour can pose a difficult time in for traffic‚ but when rain is involved this can be a much worse situation. Visibility could be one of the problems that arise during this time. When the rain is too heavy‚ drivers have to be careful and hope their windshield wipers are working properly. The heavy rain limits a driver’s view of the road. It is much harder for people that do not have good eyesight also. At night‚ the roads are dark black and with the rain it makes
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The cat seems to be a big focus in Hemingway’s story In his short story Cat in the Rain‚ Ernest Hemingway uses imagery and subtlety to convey to the reader that the relationship between the American couple is in crisis and is quite clearly dysfunctional. In other words‚ the reader has to have a symbolic reading of the images. In fact‚ what seems to be a simple tale of an American couple spending a rainy afternoon inside their hotel room serves as a great metaphor for their relationship
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Charlie Babbit; a self centered man who had only cared about himself in the movie "Rain Man". Charlie was very materialistic and cared deeply about money‚ money and more money. He had recently bought foreign cars that he was trying to sell through his business‚ but first he had to get them approved through the EPA. To fix these cars‚ Charlie had to take out bank loans which came with interest and a time limit. With days passing on without Charlie selling his vehicles‚ he recieves a call and becomes
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Separation of Amino Acids by Paper Chromatography Chromatography is a common technique for separating chemical substances. The prefix “chroma‚” which suggests “color‚” comes from the fact that some of the earliest applications of chromatography were to separate components of the green pigment‚ chlorophyll. You may have already used this method to separate the colored components in ink. In this experiment you will use chromatography to separate and identify amino acids‚ the building blocks of proteins
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It is never a bad thing to have a rainy day because usually the next day is sunny. Well‚ On the planet Venus it rains for 7 years straight. But‚ when the rain does stop‚ there is only an hour of sunshine. It had been raining for seven years on the planet Venus‚ and the rain has finally stopped. The kids had all never seen the sun since they were about two years old and we’re excited. But‚ one 11 year old girl named Margot stood apart from them‚ remembering when she lived in Ohio the sun was out almost
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effect of citric and buffered lactic acids on the flavour of hard-boiled sweets and the effect of acids on various flavours in high temperature applications. Introduction Materials and Methods An amount of water‚ sugar and glucose syrup of 30g‚ 100g and 70g were weighed respectively into a stainless steel pot. The mixture was then heated and removed immediately from the induction cooker after reaching the desired temperature of 145˚C. Flavours of 0.51g and acid of 1.20g was added immediately afterwards
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A. E. Hemingway “Cat in the Rain” Text Interpretation We tend to think of marital life as of a wonderful time‚ when two soul mates live happily‚ worshiping each other. However‚ having a family and seeming happy‚ one can be misunderstood and feel lonely. And this is the theme of Ernest Hemingway’s story “Cat in the rain”. The story is about a young American couple‚ who spend their time in Italy. The reader knows nothing about the couple’s past‚ and even the American
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second romantic country of the world after France (well in my opinion). It is raining and the wife sees a cat in the rain and wants to protect it from the rain‚ which is odd because usually children are the one sensitive and naïve enough to want to protect animals from such a thing as the rain since it is not harmful to animals. Only human beings get a cold when standing out in the rain not animals! Her husband‚ laying on the bed reading‚ makes a poor less attempt to offer his help which can be interpreted
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A walk in the rain People called it a murderous night‚ but that term was clinched. Since it was raining cats and dogs and you could probably see a speck or two of the flashing lightening above and hear the roar of the sky which now that i think about it‚ sounded like a lion with a very bad throat indeed‚ but oh well‚ what is such a big deal in that? “No biggie” as my friend put it. Leave out the thunder and the lightening and just speculate – what’s better than thousands of cold‚ crystal droplets
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