Osmosis and Scientific Method Lab Report Abstract The purpose of the lab is to see how different size potatoes have faster water movement depending on the concentration of sucrose it was placed in. We had two sized potatoes‚ 6g and 10g‚ and placed each in three different dilutions of sucrose at 0.5M‚ 0.1M‚ and 0.05M. We also placed a 6g and 10g potato piece in water to act as a control. Based on the weight percent change over 60 minutes‚ the 6g potato piece had faster water movement than the
Premium Chemistry Concentration Osmosis
Unit 18 B Study Guide 1. Find the solubility (in mol/L) of lead(II) chloride (PbCl2) at 25oC. Ksp = 1.62e–5. A) 1.59e–2 B) 2.53e–2 C) 6.64e–17 D) 2.01e–3 E) 2.01e–2 2. The two salts AgX and AgY have very similar solubilities in water. It is known that the salt AgX is much more soluble in acid than is AgY. What can be said about the relative strengths of the acids HX and HY? A) Nothing. B) HY is stronger than HX. C) HX is stronger than HY. D) The acids have equal strengths. E)
Premium Solubility Concentration Sodium chloride
strategy. The first part of Porter’s Five-Force model is rivalry. According to Porter‚ rivalry focuses on two main factors which are a high concentration ratio and a low concentration ratio. A high concentration ratio indicates that a high concentration of market share is held by the largest firms which the industry is concentrated. A low concentration ratio indicates that the industry is characterized by many rivals‚ none of which has a significant market share (Porter‚ 2010). Porter offers
Premium Barriers to entry Concentration Strategic management
Article: Information technology: a growth navigator for small scale industries in India Small scale industries (SSI) have a significant role in the Indian economy in view of its contribution to production‚ employment‚ and export. However‚ since 1991 small scale industries in India find themselves in an intensely competitive environment due to globalization‚ domestic economic liberalization‚ and dilution of sector specific protective measures. The formation of World Trade Organization in 1995 also
Premium Pollution Yamuna India
equal or no solute forms an isotonic solution. Throughout this lab‚ data was collected and compiled to analyze these effects across selectively permeable membranes. The results indicated that the water molecules indeed move from high concentration to low concentration‚ while solutes do the same if the membrane is permeable to them. This was evident through our experiments in which membrane permeability was tested in living Elodea plant cell‚ which was placed in 3 different solutions‚ from distilled
Premium Semipermeable membrane Osmosis Concentration
substance it is in c. concentration ratio of mass or volume of solute to mass or volume of solvent d. heterogeneous a mixture is made up by two or more different substance which are (mixed) together but are not combined e. homogenous mixture mixture that is uniform throughout f. Henry’s Law An expression for calculating the solubility of a gas in a fluid based on temperature and partial pressure g. solution mixture of two or more substances h. Molarity concentration measured by the number
Free Concentration Solution Solvent
Abstract Through three different experiments we were to find the quality of NaCl as a deicer. These experiments included testing the freezing point depression of NaCl in solution at two different concentrations‚ testing for the H of an aqueous NaCl solution‚ and combining NaCl with MgCl2 in an aqueous solution to test for freezing point depression. Through these various experiments we found NaCl to be the best deicer for our region due to its proficient freezing point depression and its cost
Premium Sodium chloride Chemistry Concentration
supported the hypothesis that if Daphnia are placed in differently concentrated solutions of barium and calcium chloride‚ then the highest concentration of calcium chloride would affect them the most because of the production of hydrochloric acid and calcium oxide from the mixing of water and calcium chloride‚ two very dangerous acids‚ with the highest concentration having the biggest chemical reaction. Within five minutes of putting the Daphnia into the 10 (ppt) solution of calcium chloride‚ one or
Premium Water Concentration Acetylcholine
9 4 5 6 6.00 D 4 4 3 3 3.50 E 3 4 1 3 2.75 Table two: Calculation of cell count (ml-1) Tube Average Count for four (4x4 grids) Average Count ml-1 (no. X 104) Final Dilution factor Original cell concentration A 32.75 327500 × 4 131 × 104 B 10.25 102500 × 8 82 × 104 C 6.00 60000 × 16 96 × 104 D 3.50 35000 × 32 112 × 104 E 2.75 27500 × 68 187 × 104 Table Three: Percentage of cell viability (%) Tube Average viable cell count
Premium Concentration
region of higher concentration to a region of lower concentration. This happens because of random molecular motion. Molecules move around randomly until there is an even mixture throughout cell and mixture. The overall effect is that molecules move down a concentration gradient from a region of high concentration to a region of low concentration which is passive transport. Osmosis is the movement of molecules down a concentration gradient and at the same time
Premium Osmosis Diffusion Chemistry