Osmosis using potato cores and sucrose solution 1.0 Abstract This experiment’s ultimate goal is to find the water potential of the potato cell. This was achieved through placing potato cores in different concentrations of sucrose (0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%‚ 2.0%‚ 3.0% and 4.0%) solution and to observe how much water was gained or lost through osmosis to reach a prediction of the concentration within the potato cell. The results displayed that the concentration of sucrose within the potato cell is
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Research Question: Which salt solution caused the sailor to die? Hypothesis: If the sailor drank the 40% salt water solution‚ then would die sooner‚ because the high amount of salt causes more dehydration. Variables: Independent- Salt Solution Dependent- Mass of Potato Control- Tap Water Materials: •Tap Water (50 ml for each cup) •Salt •Beaker •3 cups •3 pieces of potato •Scale Procedure: Step 1: Gather Materials. Step 2: Weigh each potato separately on the scale and record weight
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BIOLOGY OSMOSIS LAB REPORT 1. Research Question/ Aim How do the different sodium chloride concentrations of solutions affect the length (measured in mm) and mass (measured in grams) of potato cores placed in them overnight (approximately 10 hours)? 2. Hypothesis Alternative hypothesis: As the concentration of sodium chloride in the solution increases‚ the mass of the potato cores will decrease. If the solution they are in has a lower water potential than the potato cores‚ there will be
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extracellular solution‚ this was deemed the baseline. When we punctured each of the DEM‚ DEL1‚ and DEL2 crayfish muscles‚ we observed a large drop in voltage (refer to Figure 1)‚ therefore indicating that inside the muscle was more negative in relation to the outside solution. The time when the pipette was intramuscular‚ the recording showed a steady reading of the intramuscular voltage potential (Figure 1). When the pipette was removed from the crayfish muscle and was back in the extracellular solution‚ the
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conditions of communist countries. The static number of deaths due to communism is approximately 94 million. Compared to the deaths of the holocaust which would stand at 11 million. 94 million is a to high number‚ when dealing with innocent lives. The Potato Eaters‚ a painting by Vincent Van Gogh‚ a novel by George Orwell published in 1954‚ and “Dog‚” a 1977 song performed by Pink Floyd and written by David Gilmour explore the idea that communists countries have harsh conditions that will be apart of
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My 48 hour ice cube addiction simulation turned out to be very different than what i had expected. I don’t put an ice cubes in my water cup at all. So my ice maker in the freezer is always empty. So I have to keep the ice maker full of ice cubes to use it in my addiction simulation. My first hour in the 48 hours simulation I was trying to fill my water bottle with ice cubes. I spilled some of ice cubes on the floor. My dad got suspicious when I filled a water bottle full of ice cubes‚ because I’m not
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“Amerikkka’s Most Wanted”‚ “The Grand Wizard”. There is only one man who holds the right to all these names‚ and that is the rap star‚ Ice Cube. O’Shea Jackson Sr.‚ soon to be called Ice Cube by his fans and friends‚ would grow up to be a tremendously influential piece of American hip hop‚ and helped cast the mold for future singers to form their careers in the likeness of. Ice Cube is one of the greatest rappers to ever live. He was raised in South Central L.A.‚ which is where he first begins to see his reason
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Effect of Iodine on mercury concentrations in dental-unit wastewater John Michael Panganiban and Ian Jasper Ocampo Objective: This study was undertaken to determine whether iodine used to control bacteria in dental unit wastewater could increase mercury concentrations in dental wastewater. Introduction: Two of the major concerns in dentistry are biofilm in dental unit waterlines and the contamination of dental unit wastewater with mercury. Biofilms are microscopic communities that consist
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peroxide reacts with iodide ions producing iodine‚ when in an aqueous acid solution. H2O2 (aq) + 2I- (aq) + 2H3O+(aq) I2 (aq) + 2H2O(l) To detect iodine you can look at the color shown by the addition of starch solution. Iodine also reacts with sodium thiosulphate solution‚ which acts as a delaying agent. Adding sodium thiosulphate to the reaction mixture will allow the iodine produced initially to react with the thiosulphate ions‚ which reduce the iodine to iodide ions‚ leaving the starch unchanged
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the whole concept in watching an ice cube melt in a beaker filled with vegetable oil. At first‚ I thought it was going to be interesting‚ right of the bat with bubbles and other reactions that catches interest. Once we started the procedure by inserting the ice cube into the beaker filled with vegetable oil‚ the dullness and boring state also began to flow. We sat there watching for a good five minutes before any visual reaction was taking place. The ice cube was actually melting in the oil; however
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