Purpose: How will salt and plain water affect plant cells? Hypothesis Clear water: If you place carrots and celery in plain water they will become flaccid and then eventually start to loose its colour and pieces of the celery or carrots will fall off. I know this because the vegetables will continue absorbing water putting the vegetable in a hypotonic solution. Pieces of the vegetable could break off because the cells are not getting what they need. The cells need to create glucose and oxygen
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and salt water is that both are basically the same chemical - water‚ although the contents of other materials dissolved in it differ. Both contain some amount dissolved chemical in it though the quantities vary. Both form different links in the water cycle of the nature. Both are homes to aquatic life. Difference: Salt water contains much higher quantities of dissolved chemicals as compared to fresh water. This higher concentration of chemical also raises the density of salt water
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whether salt affects the movement of water in the cell. Independent variable is the factor that affects the value of variables dependent to it. In osmosis lab‚ the independent variables are the potato and onions. The dependent variable is the variable whose value is measured to determine the extent of the effect of another variable to it‚ as in an experiment. In osmosis lab‚ the dependent variable is the length of the potato. The controlled variables are the amount of water‚ amount of salt‚ and the
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heterogeneous mixture composed of 5.00 grams of salt‚ 2.00 grams of sand‚ 50.0 mL of water‚ 15.00 grams of pebbles‚ and 1.00 gram of iron filings‚ and leave as much salt as possible remaining. Using separation techniques including magnetizing‚ evaporation‚ filtration‚ etc. the heterogeneous mixture was thoroughly separated into 4.88 grams of salt. There have been some errors regarding the isolation techniques and processes‚ however‚ the mass of salt at the end is substantial enough to conclude that
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Gravimetric Analysis Report Aim: Determine the % by mass composition of a sand-salt mixture. Background: Gravimetric analysis is a method which is based on the isolation of the desired sample in pure forms or in some combined form from a sample‚ and weighing the isolated constituent. Then from the weights of the sample or precipitate‚ a percentage can be calculated out of the constituent. Solubility is the amount of a substance which is called the solute‚ dissolves in a volume of liquid substance
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used to separate salt and sand from a mixture. Procedure The procedure for this lab can be found on pages 16 – 30 in “General Chemistry CHE110L Laboratory Manual Fall 2013”. Data Tables Carbon copies of data tables have been attached to the back of this lap report. Calculations Paper Chromatography- 1. Yellow M&M’s Rf Value: 2. Orange M&M’s Rf Value: 3. Blue M&M’s Rf Value: 4. Green M&M’s Rf Value: 5. Red M&M’s Rf Value: Separation of a Sand/Salt Mixture 6. Mass
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investigated the effect different salt concentrations have on the enzyme activity. Serial dilutions were performed to prepare a lactase solution as well as twenty percent‚ fifteen percent‚ and five percent concentrations of NaCl. Three different treatments of ortho-nitro-phenyl-galactoside‚ lactase‚ and perspective salt concentrations were prepared in cuvettes where the reaction would be observed and recorded from a spectrophotometer. Larger concentrations of salt adversely effect the reaction activity
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experiment is about osmosis on a potato and if or the quantity of salt affects osmosis. I would do the experiment with 5 potatoes cut into squares all the potatoes weight the same so the weight can`t be a variable the I put the potatoes on 5 different plastic cups with different amounts of salt and then I weight them again to see if the quantity of salt affected the osmosis of potatoes 1a. Research question ¿Does the quantity of salt in water affected osmosis? 1b. Variables |Variables
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Chemistry Lab: Hydrolysis of Salts Name_____________________________________________________Date__________________ New Concept: Hydrolysis Reactions Review Concepts/Application: Writing chemical formulas‚ writing ionic equations‚ determining solubility‚ measuring acidity and basicity. Pre-Lab Discussion A salt is an ionic compound containing positive ions other than H+ and negative ions other than OH-. Most salts will dissociate to some degree when placed in water. In many
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Aim: 1) To determine the effects of different salt concentration on the percentage of weight change in potato cubes 2) To determine the isotonic solution concentration for the potato Hypothesis: 1) If the concentration of the salt solution is higher than the concentration in the potato cubes‚ the percentage of weight change in potato cubes will be higher (positive). If the concentration of the salt solution is the same as the concentration in the cell‚ there will be no net movement of water through
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