Alcohol Lab Data Conclusion Objective: The objective of this lab was to find the concentration of an unknown alcohol solution. Procedure and Data: We found the masses of 10.00 mL of each of the known concentrations of alcohol (minus the beaker mass) by placing the beaker onto the scale‚ zeroing the scale‚ and then pouring alcohol into the beaker‚ repeating for each different concentration solution. Then‚ using the same method‚ we found the mass of 10.00 mL of the unknown concentration. We recorded
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needs water to survive. Water is our most important resource that is required to ensure our survival. This resource is something that we use every day in our lives and it serves many different purposes. We use water to take showers‚ to flush the toilet‚ cook dinner‚ to drink‚ and to clean. Water is not only used for our domestic needs‚ or wants but it is used in agriculture‚ industries‚ transportation‚ and as an alternative energy source (Lenntech‚ 2008). Life would be impossible without water. All
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Final Speech Name: Fall 2013 Student General Purpose: To Inform Specific Purpose: At the end of my speech‚ my audience will be aware of the concept I learned most from in my speech course and how I will use it in my future. Introduction Did you know that there was a speech that killed? On a cold and wet day‚ President William Henry Harrison presented a speech comprised of 8‚445 words at his inaugural ceremony. By being exposed to these cold conditions‚ a month later‚ he died a slow and painful
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movement of water molecules across a semi-permeable membrane is the process of osmosis. If there is a solute and a solvent‚ each containing different concentration levels‚ then the water would move along its concentration gradient until each side of the membrane are equal. The water moves because the membrane is impermeable to the solute and the solute concentrations may differ on either side of the membrane. Water molecules may move in and out of the cell‚ but there is no net diffusion of water. Water
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Conclusion In this experiment I tested different light intensities. I tested a normal fluorescent light bulb‚ a 100-watt light bulb‚ a 25-watt light bulb‚ and a 15-watt light bulb. I was surprised to find that the control plant grew the most at 135 mm. The 100 watt plant grew the least at 0 mm due to the fact that it fried the plant. The 25 watt plant grew the next highest at 120 mm. The 15-watt light bulb grew tall fastest‚ but then slowed down and stopped at 98 mm you would want to use this
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Osmosis In Potato Cells Apparatus: The apparatus used in this experiment were: 1) 5 beakers‚ 2) 3 large potatoes (same type)‚ 3) 15 pieces of potato without skin (roughly the same size)‚ 4) 10 pins‚ 5) 50ml of distilled water‚ 6) 50ml salt solution 0.50‚ 7) 50ml salt solution 1.00‚ 8) 50ml salt solution 1.50‚ 9) 50ml salt solution 2.00 10) Scales‚ 11) Knife‚ 12) chopping board‚ 13) cork borer‚ Prediction & Theory: When the potato pieces are put in to the water there are more water molecules
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Osmosis in Potato Cells We should first explain what Osmosis is. It’s a passage of water from a region of high water concentration through membrane to a region of low water. Semi membrane is a very thin layer of material‚ which allows some things to pass through them but prevent other things from passing through. The cells allow small molecules like Oxygen‚ water‚ Carbon Dioxide‚ Ammonia. But will not allow larger molecules like Sucrose‚ Starch‚ or protein‚ etc. High concentration of water is either
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The story of potato chips dates back to late 1850s‚ when a New York chef presented deep fried crisp potato chips to the railroad tycoon Cornelius Vanderbilt. Although the invention was made out of curiosity‚ it became an instant hit after Vanderbilt gave it an approval. Till date‚ potato chips are one of the most favorite snacks among many Americans. To keep up with the healthy trend at present‚ many chips makers now have baked alternatives to traditional chips. Here are few choices of our top chips
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Conclusion The research question that I asked myself before the experiment was “What is the osmotic potential of potato?” The answer I got after the experiment was that the osmotic potential of potato is very high because this experiment exactly showed what happened when there is Osmosis present and the following information will prove it. Our results greatly showed that there has been osmosis present. Osmosis is the diffusion of water through a partially permeable membrane from a region of lower
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I lived on a potato farm in Ireland during the Great Potato Famine. It was the worst famine in Europe in the 19th century. This famine started in September of 1845 and ended in 1852. During this time‚ life in Ireland was extremely difficult. We suffered from much starvation and disease. Approximately one million of us died and another million emigrated to other countries‚ especially America. The population of the country dropped 20 to 25%. The Great Famine began mysteriously. My family
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