Red Cabbage Indicator Aim – To create a pH indicator out of a red cabbage solution and to construct a basic pH scale to determine the pH of unknown solutions. Materials - • red cabbage leaves • 250 mL beaker • hotplate or Bunsen burner‚ tripod‚ gauze mat and bench mat • 10 test-tubes – equal size • test-tube rack Methods - Part A: Making the indicator 1. Tear up one or two red cabbage leaves‚ and place them in the beaker with enough water so that the cabbage is just covered. 2. Heat the beaker
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the effects of an incorrect pH level. pH measures the concentration of hydronium ions and can be modeled by the function p(t) = −log10t. The variable t represents the amount of hydronium ions; p(t) gives the resulting pH level. Water at 25 degrees Celsius has a pH of 7. Anything that has a pH less than 7 is called acidic‚ a pH above 7 is basic‚ or alkaline. Seawater has a pH just more than 8‚ whereas lemonade has a pH of approximately 3. 1) Create a graph of the pH function either by hand or using
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Buffers‚ and pH‚ and Diffusion oh my The pH of a solution is the measure of the concentration of charged Hydrogen ions in that given solution. A solution with a pH lower than seven is considered to be acidic. A solution with a higher pH is a base. It is very important for organisms to maintain a stable pH. Biological molecules such as proteins function only at a certain pH level and any changes in pH can result in them not functioning properly. To maintain these constant pH levels‚ buffer solutions
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University’s wooded areas‚ the oldest was created in 1989 the second was created in 1994 and the youngest plot was created in 1999. For the hypothesis to be tested‚ there were soil PH meters to test the amount of PH in each plot’s soil. The hypothesis was incorrect; there was not a significant difference in the means of the PH from the oldest plot compared to the youngest plot. Introduction The definition of vegetation is plants considered collectively especially those found in a particular area
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Armadillium vulgare taxis response to different pH levels. Abstract The terrestrial isopod‚ Armadillium vulgare is commonly referred to as a slater or pill bug. Since transitioning from the sea to land and originally colonizing in Mediterranean regions‚ it has adapted throughout evolution to inhabit local microhabitats. The pill bug is bound by several parameters and also has specific requirements that need to be met for optimal biological functioning. As such‚ behavioural and physiological
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Myrtle Freedom under threat: PH‚ 2rd deadliest country for Journalists Journalism has long been a high-risk profession‚ many journalists and reporters have put their lives on the line for a story. Journalists often have to go through extreme measures just to get information. Intensive research‚ live coverage and interviews are being demanded more and more by the public and in order to get such vital information‚ being on the scene is necessary. According to Committee to Protect Journalists (CPJ)
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THE TUBBATAHA REEF The name ’Tubbataha’ is a Samal word for "long reef exposed at low tide". Samals are seafaring people of the Sulu Sea. Cagayanen people who are more geographically associated with Tubbataha Reefs referred the Park as ’gusong’. Location Tubbataha Reefs Natural Park (TRNP) lies in the middle of the Sulu Sea and falls under the political jurisdiction of Cagayancillo‚ an island municipality situated 130km to the north. The park is around 150km southeast of Puerto Princesa City -
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only as an annex named‚ Marikina High School Annex. By the year 1993‚ Mrs. Lagrimas B. Garcia‚ the school principal‚ made extra effort on achieving full independence of the Marikina High School Annex to give birth to the school‚ Parang High School (PHS). PHS had been through a lot of changes since the School Year 1996-1997. Hon. Congressman Romeo DC Candazo‚ Hon. Bayani BH Fernando and Dr. Perla B. Menguito made a big impact on the transformation of the school’s image and into a conductive learning environment
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AIR POLLUTION IN THE PHILIPPINES Guides and Tips Home / Blog / Air Pollution in the Philippines Air pollution is a common and frequent problem nowadays. When you are on your way to work‚ you pass by your neighbors’ backyard where he is currently burning their garbage from yesterday‚ then you come across a smoke-belching public utility vehicle‚ then a guy beside you lighted a cigarette and started suffocating you with second-hand smoke. You cannot always depend on your handkerchief on covering
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digestive power of pepsin is greatest at the acidity of normal gastric juice (pH 1.5–2.5). In the intestine the gastric acids are neutralized (pH 7)‚ and pepsin is no longer effective. "Pepsin (biochemistry)." Encyclopedia Britannica Online. Encyclopedia Britannica‚ n.d. Web. 10 Dec. 2012. Research Question: Does changing the pH of pepsin affect the ability to break down the protein (mass of jello). Variables: independent- Ph level dependent- The mass of the jello
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