The results over all groups were either over or under initial weight. To receive closer measurements a better salt wash to separate salt from sand would give more accurate results. Also a better straining method that doesn’t absorb some of the salt solution and trap sand would give more exact measurements of the individual components of the
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Effect of osmosis rate on different surface areas‚ depending on different types of water solution An investigation showing the effect of surface area on osmosis rate‚ including some different types of water concentration. Osmosis is a type of passive (not requiring energy) transport of water molecules across partially permeable membrane‚ from an area of high water concentration into area of low water concentration. But how does surface area affect rate of osmosis? Surface area plays important
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Abstract: The purpose of this experiment was to determine the concentration of an unknown amount of copper sulfate using the spectronic 20. Four solutions of different concentrations of H₂O and CuSO₄ were put into the spectronic 20 to observe their absorption of light. Then‚ a graph was created to plot down the measurements. Using the calibration curve of the graph‚ the concentration of the unknown substance was found out to be .12M. Background/Introduction: Beer’s law (which states that
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Answers to Questions Activity 1: Simulating Dialysis (Simple Diffusion) (pp. 2–4) 9. All solutes except albumin are able to diffuse into the right beaker. Using distilled water in the right beaker and either the 100 MWCO or 200 MWCO membrane will remove urea from the left beaker and leave albumin If the left beaker contains NaCl‚ urea‚ and albumin‚ you can selectively remove urea by dispensing a concentration of NaCl into the right beaker equivalent to that in the left beaker and by using
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This report will talk about the history of philosophy and will compares and contrasts three basic views of presocratics: Naturalism‚ materialism‚ and Monsim. The Three presocratics known as the Milesians‚ created their own philosophies out of a need for explanations regarding what the subject is or stuff the universe is made of? In comparison‚ the second “set” of Presocratics; Pythagoras‚ Ephieans‚ and Eleactics‚ sought after the ideas of Materialistism or Worldly philosophies in regards to whether
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Matter‚ Solutions‚ and Phase Changes Unit 1. What is matter? Anything that takes up space (volume) and has mass 2. Explain how to classify matter. (Homogeneous‚ Heterogeneous‚ Mixture‚ Pure Substance)? HOMOGENEOUS Matter that is made up of the same or alike particles Can’t see what makes it up Looks uniform HETEROGENEOUS Matter that is made up of different types of particles Can see what makes it up Mixture A material made up of two or more substances that can be easily separated
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Can self-indulgence and materialism lead to social chaos and self-destruction? In “Teddy” and “A Perfect Day for Bananafish‚” J.D. Salinger reveals that the ostentation of society results in the downfalls of the protagonists. Both Seymour Glass and Teddy McArdle feel embarrassed and uncomfortable because of their distinctions from the majority of the people they are surrounded by. Seymour suffers from post-traumatic stress syndrome as an affect of the war‚ and Teddy retains the mind of a child genius
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lose weight as the potatoes would have lower water potential when placed in a solution ‚ and in this can be taken from the theory of osmosis which states that “the passive diffusion of water molecules across a selectively permeable membrane down a concentration gradient” (Taylor and Bruenn‚ 2009)‚ moving water from a high to a low concentration‚ so in this case water would move from the potato tuber to the sucrose solution reducing the weight of potatoes. Pospíšilová (1970) also states that the water
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Physiology Ch 3 Types of Solutions.notebook October 22‚ 2013 Types of Solutions that Cells May Be Found In 1) Hypotonic Low [solutes] in ECF 2) Isotonic solution equilibrium 3) Hypertonic High [solutes] in ECF Oct 199:29 AM 1 Physiology Ch 3 Types of Solutions.notebook October 22‚ 2013 Hypotonic Low [solutes] in ECF In this situation‚ water wants to move from the ECF to the inside of the cell since there is a lower [H2O] inside than out. Particles
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point for a solution steadily decreases until the solution has completely solidified. Account for this decreasing temperature. - The freezing point of the solution is always lower than the freezing point of the pure solvent because when a non-volatile solute is dissolved in a solvent‚ the vapor pressure of the solvent is lowered. A depression of the solvent freezing point occurs. 7. Part C.1. Interpretation of the data plots consistently shows that the freezing points of three solutions are too high
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