Diffusion Lab Essays

Diffusion Lab Essays Diffusion Lab Essay Diffusion Lab Essay The food dye added to the ice water did not diffuse. This data agrees with my hypothesis that warm water diffuses fastest. It was also proven that the concentration of solute affects diffusion. The group of potatoes placed in distilled water was closer to equilibrium than the groups placed in 10% and 40% NCAA elution because the water had no solute. The potatoes in 10% and 40% NCAA were placed in a hypersonic solution, which is why the potatoes in 10% decreased . 4 grams and the potatoes in 40% decreased . 8 grams, according to class data. Although the data for 10% NCAA followed the class data pattern decrease in mass, 40% NCAA did not, which is an error. The more water left from the potato, the softer it became which is proven when the potatoes in distilled water got increasingly hard, in 10% NCAA got soft, and in 40% NCAA got very soft. It was also proven that the size of the solute affects diffusion. Starch did not move out of the dialysis tube because it was too large of a solute. If starch had moved out of the bag, the water in the beaker would have turned black, which it did not. Instead, the water on the inside of the dialysis tube turned black because SKI is a small enough solute to diffuse across the dialysis tubing. The glucose moved out of the tubing because the water in the beaker Witt Benedicts turned turquoise Delude when put In Dolling water, a positive test result for glucose. The amount of glucose that went out was more than the amount of SKI that went in, which is why the mass decreased. Proven last was that type of membrane affects diffusion. The shell of egg that was left in vinegar was completely gone in 24 hours. The outermost layer was the amniotic sack. The membrane of the egg in the oil was its shell. The shell serves as a skull to the egg, so it is very selectively permeable. This is proven because its change in mass was very little, only -1. 53, compared to the amniotic sack on the cell submerged in vinegar, which was -13. 97. Because the amniotic sack is less selectively permeable than the shell, there was a greater change in mass than the egg in the oil.

The Four Sounds of the Spelling OU

The Four Sounds of the Spelling OU The Four Sounds of the Spelling OU The Four Sounds of the Spelling OU By Maeve Maddox In response to the post on all a rouse, Paul Wilkins wrote I am wondering why people are misusing rouse to mean ruse. What other spellings of common words are there that would cause them to think that rouse is pronounced in the same was as ruse? The only only one that comes to mind is the -use word ending for words such as hypotenuse. Actually, there are several English words in which the spelling ou represents the /oo/ sound: you, your, tour, crouton, group, coup The reference on which I most rely for discussing the sounds and spelling of English is Romalda Spaldings The Writing Road to Reading. Spalding based the teaching guidelines in her book on the work of Samuel Orton and his student Anne Gillingham. Both the Spalding Method and the Orton-Gillingham Method organize the sounds and symbols of English into 46 sounds (phonemes) and 70 written symbols (phonograms). In the Spalding method phonograms that represent more than one sound are presented in order of frequency. That is, if a letter or letter combination can represent more than one sound, the first sound is the most common, the second less common, and so on. When encountering an unfamiliar word, the beginning reader is taught to try the first sound first. If that doesnt produce a recognizable word, then the second sound is to be tried. In Spalding the four sounds of the phonogram ou are presented in this order: 1. /ow/ as in found about, house, shout, mouse, count, loud, sound, hound 2. long o as in four pour, course, court, gourd, mourn, fourth 3. /oo/ as in you your, tour, crouton, group, coup 4. /uh/ as in country cousin, double As one might expect, American pronunciation has undergone changes since Orton and his students did their research back in the 1920s and 1930s. Television has spread many pronunciations and words that were once considered regional rather than standard. For example, the word tour [tÊŠr] is often heard pronounced to rhyme with chore. In answer to the readers question, the bloggers who spell the word ruse with the phonogram ou have never seen the word in print. They are associating the spelling ou with its third sound and not its most common sound. As the writing population continues to read less, many conventional spellings will be lost. They will be replaced by forms that look right to writers who are not used to seeing them in print. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Spelling category, check our popular posts, or choose a related post below:36 Adjectives Describing LightWhat is Dative Case?Affect vs. Effect