The Effect of Varying Molecular Weights on the Rate of Diffusion of Substances August 22‚2012 ABSTRACT The effect of molecular weight on the rate of diffusion was verified by the 2 tests: the glass tube setup and the water agar-gel setup. In the glass tube setup‚ two cotton balls were soaked in the solutions of hydrochloric acid (HCl) and ammonium hydroxide (NH4OH) and were simultaneously placed on both ends of the tubing.NH4OH had a lighter molecular weight of 35 g/mole which diffused
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able to receive the nutrient in the 1 cm cell and almost all of them in the 0.5 cm cell. This is caused due to the larger surface area to volume ratio as the cell size depends on the efficiency of the material to flow in and out through diffusion. Through diffusion‚ the organelles in the cell receive all the vitally needed nutrients to survive. If there is a big surface area to volume ratio such as 1:2‚ then this process will be delayed due to the sodium hydroxide having to cover a larger distance
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ABSTRACT The effect of molecular weight on the rate of diffusion was measured using two tests namely: the glass tube test and the agar-water test. The set-up of the glass tube test used two cotton balls of the same size. One cotton ball is moistened with hydrochloric acid (HCl) and the other one is moistened with ammonium hydroxide (NH4OH). The two cotton balls were inserted in both ends of the glass tube. NH4OH which has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20
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Solute Concentration of Potatoes Lab #1 Purpose: To find the molarity/concentration of potato cytoplasm. Materials: As on page 1 in the lab handout. Procedure: As on page 1 in the lab handout. Data and Observations: Test Tube # | Concentration of sucrose solution (mol/L) | Initial Mass (g) | Final Mass | Percentage change in mass | 1 | 1.0 mol/L | 3.00g | 2.25g | -25.0% | 2 | 0.9 mol/L | 2.70g | 2.07g | -23.3% | 3 | 0.8 mol/L | 2.92g | 2.25g | -22.9% | 4 | 0.7 mol/L | 2.60g
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1. In this case‚ the parties eventually settled‚ and Dr. Lee went on to run the Google China initiative. If you were running Microsoft‚ what would you have done differently in this situation? In 2000. Dr. Kai-Fu Lee‚ a renowned computer scientist‚ worked at Microsoft‚ his employment with Microsoft beginning with an “agreement with Microsoft contain[ing] a limited covenant not to compete” (Ferrera‚ p. 320) for one year after leaving Microsoft. The agreement also contained a forum selection clause
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Both Adonis and Attis may be considered "resurrection gods." True What are the two names for Aphrodite that are linked with the islands of Cythera and Cyprus? (Spell them carefully.) Cytherea and Cypris According to one tradition‚ Aphrodite is the daughter of Zeus and _____. Dione What is the distinction between Aphrodite Urania and Aphrodite Pandemos? Urania: sprung from Uranus alone ; Pandemos: sprung from Zeus and Dione According to our textbook‚ Aphrodite is the goddess of love
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2) Which department authorizes changes in employee pay rates? - Production department does the authorizing; Production employees prepare two types of time records. This helps the cost accounting department. They use this to allocate direct labor changes to work-in-process (WIP) Accounts. 3) Why should the employee’s supervisor not distribute paychecks? - Because there is a chance the supervisor could create a non-existent employee and time card him in then taking his checks for themselves.
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Thesis Statement and Outline Thesis statement: While parents are teaching their child the basic life skills‚ celebrities are teaching kids the exact opposite. Introduction • I. Each influences values about money and success. A. Supporting details 1. Parents influences their children to work hard and earn their money the right way. 2. Parents influences their children to finish high school and get a great education to be successful. B. Supporting details 1. Celebrities influences
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Jena‚ a small town in central Louisiana‚ is 85% white and the black population says that racism always has been an issue. In September 2006‚ a black boy sat down next to a tree in Jena High School where usually only white boys sit and the next day three nooses were found hanging in the tree‚ a symbol from when the KKK used to hang black people. No parents were given any information on what happened and the white boys were allowed back to school after only three days. Another example is‚ in October
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E8) "Inclusiveness is derived from the verb ’to include’. To include someone means making them feel part of what is happening’. (P.Tassoni‚ 4th edition page 8). This means you cannot leave a child out of anything‚ it doesn’t matter if they have a disability‚ gender‚ age ethnic background or religion. On work experience last year they did football male and female were included and a child in a wheelchair was in charge of writing down the scores of the teams. You have to include every child but to
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