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 in grams on table. Step 3: Put each potato in a separate cup and add 50 ml of water to each cup‚ measure with beaker. Step 4: To create the 40% salt solution
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calcium chloride and they form a solid precipitate. Then we poured it a funnel with a filter paper to get the solid precipitate. Purpose ● The purposed of the lab is to lets us student know if we know how calculate the percent yield of a double displacement reaction while using the grams that we get from our lab. Objectives ● We need to know the solid precipitate that had been formed in the
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investigate osmosis‚ which was successfully achieved because there was a change in the potato’s mass which was due to the net movement of water either into the potato cells or out of the potato cells. In the 0.400M solution‚ the potato decreased in mass‚ this was due to the reason that the solution was hypertonic. There was a higher concentration of solute and lower concentration of water in the solution than there was in the potato cells. This led the water to travel down its concentration gradient‚
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A key component of the quantification of the protein concentration in the given samples was the generation of a standard curve. The data presented in Table 1 produced the graph in Figure 1 which was then used to calculate a line of best fit. The line of best fit yielded an equation y= 0.44976x which was in turn used to calculate unknown protein concentrations of given samples. The absorbances of the whole milk‚ cereal milk and muscle milk had been previously obtained and recorded via spectrophotometer
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Constant Density: Displacement of Zinc and Tin Introduction: Density is the concentration of molecules within an object on relation to its size. The formula for measuring density is mass/volume. In the experiment preformed for this lab report‚ calculating the density of a regular object (a wooden block) and two other irregular objects (zinc and tin) were found by a process known as water displacement. The purpose of this experiment was to prove that the density of an object remains the same
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(a) Explain the difference between natural change and net migration Natural change is the difference between the number of deaths and the number of births in a population‚ which either shows a natural increase or decrease. Net migration is the difference between the number of immigrants entering the country and the number of emigrants leaving the country. (b) Suggest two reasons for the increase in life expectancy One reason is development in medical technology‚ cures are found for illnesses and
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What employers are looking for in a job applicant? Finding a job‚ whether it is the first‚ a return to work after years at home‚ or just another step in the career‚ is never easy. Most job seekers have a distorted sense of an employer’s priorities in making hiring decisions. Too many applicants put the emphasis on educational credentials and ignore the qualities employers seek with the keenest interest. What do employers look for in job candidates? What impresses them the most? Knowing
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writings about the realities of managerial work and the nature of the management advice industry‚ why might we question this conventional view? Jackall’s (1988) text ‘Looking up and looking around’ looks beyond the façade and exposes the realities that make up the inner-workings of the managerial position. The notion of ‘looking up and looking around’‚ as explained by Jackall (1988) to be a manager’s inability to make “gut decisions” and the need to add people to his/her problem to pass blame is far removed
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The essay “Caught in the net” written by Eva Tihanyi is an essay describing internet users. The thesis in Eva’s essay is “For some‚ the Net is a reliable companion‚ twenty-four hours a day‚ seven days a week—one that never sleeps. For others‚ it simply provides easy access to a vast array of data”. There are certain people that use the internet as a education tool and a way to stay connect to the world; but there is also people who abuse it and take advantage of the internet which in turn takes
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To surf the Net anonymously‚ people should use a proxy server. In this way‚ the IP Address will show up as the proxy IP and an added benefit is that the data will be encrypted‚ so anyone looking to steal a person’s information will not be able to read it. There are many free proxy services which a person can use to browse the internet anonymously. The first one is called HidemyAss. With HidemyAss‚ a person can surf the web anonymously‚ hide their IP address‚ secure their internet connection‚ hide
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