The effect of salt concentrations on the mass of the pear cubes ‘Pyrus’ after being soaked in water Aim: The effect of salt concentrations on the mass of the pear ‘Pyrus’ pieces shaped as cubes of 1cm. Background: Osmosis is the net movement of water molecules through a semi-permeable membrane from an area of higher water potential to an area of lower water potential. Water makes up to 70-90% of living cells and cell membranes are partially permeable membranes. Dissolved substances attract
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My conclusion is that the higher salt concentration in the solution the greater the decrease in mass of the potato will be‚ the graph I have drawn supports my conclusion. The 10% salt concentration shows that on average the potato loses 2.6% of its overall mass. 20% salt concentration shows a further decrease in mass this time it is an average of 13% overall mass decrease. 30% salt concentration shows an average decrease of 18.8% in overall mass. The 0% salt concentration actually shows a mass increase
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government in children’s healthy eating habits is in marketing‚ advertisement‚ federal policies in pricing‚ and the regulation of food served in a child’s school cafeteria. I had never really focused on or considered this issue until after reading Salt‚ Sugar‚ Fat by Michael Moss. Who is to be held responsible for this obesity epidemic is something that has long since remained controversial‚ and is a topic I desire to write my final research paper on.
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so for water with salt inside. The higher amount of salt there is in the water‚ the more the freezing point decreases. So‚ salt water freezes later than freshwater. The exact measurement of how they impact each other is this: every 5 psu increase‚ the freezing point decreases by 28%.. In an ocean‚ there is frazil and brine. Frazil are ice crystals suspended in water‚ and they are made of nearly pure freshwater. Frazil is the first stages of the growth of sea ice. Brine are salt droplets. Sometime
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AIM The aim of this investigation is to explore the effect of different concentrations of bile salts on the time taken for the lipase enzyme to break down fat. BILE Bile is a brownish bitter alkaline fluid produced by the liver and made by the hepatocytes from water‚ bile salts‚ bile pigments cholesterol and phospholipids and stored in the gall bladder. Bile is directly connected with digestion. It is released sporadically into the small intestine (duodenum) which is part of the gut in order
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falls‚ making you liable for injuries. So most people rely on deicers such as salt because it does a great job melting ice‚ but it also damages concrete surfaces over time. How does salt damage concrete surfaces? Salt lowers the pH balance in the concrete. Because it is acidic‚ it weakens the strength of the concrete and increases the sizes of the pores. This allows water and other elements to penetrate the surface. Salt also attracts and retains water‚ absorbing 10% more water into the concrete.
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How rain came to be In the beginning salt water and regular water got along. They all lived in the same ocean and each droplet would live in harmony. They shared the undersea environment with all the fish and sea plants. Some plants and animals needed salt water more than fresh water and some needed fresh water more than salt water. This is where the problem all started. The fresh water began to become jealous because the salt water was mocking the fresh water about them being the best type of
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Marker Color Prediction - Alcohol Prediction - Salt Solution Red 30mm 18mm Orange 35mm 21mm Green 38mm 26mm purple 40mm 25mm Marker Color Actual Results - Alcohol Actual Results - Salt Solution Red 50mm 23mm Orange 50mm 41mm Green 26mm 43mm purple 43mm 29mm I saw that the water actually rose faster than the alcohol did through the paper slip. Discussion and Conclusion: A comparison of how each solution (salt water and alcohol) separated the pigments from
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The effect of salt concentration on osmosis in potato. Introduction: 1. The purpose of doing this lab is to observe the effects of various solute concentrations on osmosis in a potato. 2. During osmosis‚ water moves from the side of the membrane where they are most concentrated to the side where they are less concentrated. If the concentration is equal on both sides‚ there will be no movement. 3. I hypothesize that the mass of the potato will decrease as the salt in the solution
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I. INTRODUCTION The Olympic Games took place in the United States at Salt Lake City‚ Utah. The tournament opened on February 8‚ 2002 and closed on February 24‚ 2002. There were 77 NOCs‚ 2‚399 athletes‚ 78 events‚ 22‚000 volunteers and 8‚730 of the media. “The Games saw the expansion of the Olympic program to 78 events‚ including the return of skeleton and the introduction of women’s bobsleighs. Athletes from a record 18 National Olympic Committees earned gold medals‚ including first-ever gold for
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