1- An office building contains 27 floors and has 37 offices on each floor. How many offices are in the building? Solution: Total number of offices is 27 * 37 =999 2- A particular brand of shirt comes in 12 colors‚ has a male version and a female version‚ andcomes in three sizes for each sex. How many different types of this shirt are made? Solution: Using product rule‚ we have 12×2×3 = 72 different types of this shirt. 3. Use a tree diagram to find the number of bit strings of length four
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pressure be generated if you had 9 mM glucose on one side of a 200 MWCO membrane and 9 mM NaCl on the other side? If so‚ which solution was generating the pressure? No‚ because both glucose and NaCl are diffusible with a 200 MWCO membrane. Would pressure be generated if you had 9 mM albumin on one side of a 200 MWCO membrane and 9 mM NaCl on the other side? If so‚ which solution was generating the pressure? Yes‚ the albumin would generate the pressure‚ because it does not diffuse. ACTIVITY 5: Filtration
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out in order to do the testing and monitoring of acrylamide in potato chips on the market in Indonesia. In this research‚ the method development was done by using cation exchange solid phase extraction‚ repeated extraction with 10 mM formic acid solution and precipitation at low temperature by centrifugation. The utilise of C-18 reversed-phase columns were slightly more polar performed to achieve a better separation of acrylamide. Eluent system of liquid chromatography used a time programme gradient
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The Effect of Concentration Gradient on Osmosis Abstract: Osmosis is the passive movement of water from an area of higher concentration to an area of lower concentration‚ usually across a membrane (Thorpe 2013). Tonicity is the ability of a solution surrounding a cell to gain or lose water (Reece 2011). There are many factors that affect the rate of osmosis. These include temperature‚ surface area‚ difference in water potential‚ pressure‚ light and dark and most importantly what we will be talking
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potato strips and three unknown solutions (A‚ B‚ C). First three slides were prepared containing RBC’s and unknown solutions A‚ B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The RBC in unknown solution B appeared to be swollen‚ therefor‚ the tonicity of unknown solution B was hypotonic. Unknown solution C showed no change to the RBC shape
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tubing and different concentrations of sucrose solutions‚ and to help one better understand what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis If the four dialysis tubes containing different concentrations of sucrose are all placed in their appropriate solutions for 20 minutes‚ then my predictions are as follows: The 1% in 1% sugar solution will keep a constant weight and stay the same size. The 1% in 50% solution will shrink‚ due to the higher concentration
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purpose of this lab is to observe principles of homeostasis and osmosis in action. The results of this experiment showed that eggs placed in a 4 M sucrose solution lost mass over time and had the greatest percent difference in mass compared to the eggs in other solutions‚ with the 4 M egg having an average of -25.13% difference in mass. The 0.0 M solution egg only had a 12.28 average percent difference in mass‚ the 0.5 M egg with 10.39%‚ and the 1 M egg with the least percent difference in mass‚ 6.40%
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Chemistry Teacher: Dr Ramani Topic: Comparing Solutions Saturated Solutions | A solution that can hold no more of the solute at a particular temperature is said to be a saturated solution at that temperature. | When someone adds sugar to iced tea‚ the sugar disappears. If you add one teaspoon of sugar to iced tea‚ you get an unsaturated solution. If you keep adding sugar to the iced tea‚ you
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defined as the number of osmoles (Osm) of solute per litre (L) of solution (osmol/L or Osm/L). The osmolarity of a solution is usually expressed as Osm/L (pronounced "osmolar")‚ in the same way that the molarity of a solution is expressed as "M" (pronounced "molar"). Whereas molarity measures the number of moles of solute per unit volume of solution‚ osmolarity measures the number of osmoles of solute particles per unit volume of solution.[2] Molarity and osmolarity are not commonly used in osmometry
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investigate the effects of osmosis on a potato cell as it is immersed for a period of time in solutions of different water concentrations. Hypothesis: If the potato is immersed into the distilled water‚ then it will be the heaviest out of the three. This is because water is at the lower is moving toward the area of higher concentration‚ which in this case is the potato. This solution is a hypotonic solution which is exactly opposite as a hypertonic because the outside of the cell has a higher concentration
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