Essays Tagged: "Solution"

Heat of Reaction.

re - 38?Temperature rise for NaOH = 6?Temperature rise for HCl = 7?Volume of mixture = 50cm"Mass of solution = 50g1 cm" of solution has a mass of 1gNumber of moles present in 25cm" of NaOH = .0025mole ... f moles present in 25cm" of NaOH = .0025molesHeat produced = 1365KJCalculations: (1) Mass of 1cm of solution = 1g since the density of the solution is 1g per cm",(2) Number of moles of NaOH= volume in ...

(1 pages) 39 1 4.0 May/2003

Subjects: Science Essays > Chemistry

Experiment with Diffusion, Osmosis, and Hypertonic Solution. Discusses what each is, along with how the experiment was done in a lab.

e from an area with greater concentration of water to an area with less concentration. A Hypertonic Solution is a solution of a higher concentration of solutes and a smaller concentration of water mol ... on of a higher concentration of solutes and a smaller concentration of water molecules than another solution. However, an Isotonic Solution is a solution that contains an equal concentration of solute ...

(2 pages) 149 2 4.6 Aug/2003

Subjects: Science Essays > Biology

Aim to investigate water relations in two plant tissues

losses their mass. So, the water potential of the tissue, is the same as the water potential of the solution. How concentrated a solution is will effect the mass of the tissue. For this experiment, I ... ass of the tissue. For this experiment, I found that the general rule was the more concentrated the solution, the mass of the tissue started to decrease.In this experiment we can work out when the tis ...

(7 pages) 30 0 4.4 Feb/2004

Subjects: Science Essays > Biology

"Belief is the natural attitude of a thwarted mind"

ching any problem. Buchanan is telling us that when we are confronted with a problem and a possible solution and we cannot find our way to the solution, we have a tendency to believe in the solution o ... in: "that has to be it!" A similar thing will happen when we are confronted with multiple possible solutions and we cannot show one is true. We choose one, nearly arbitrarily, and believe in it. In a ...

(3 pages) 38 0 5.0 Apr/2004

Subjects: Art Essays

The effect on Potato in Salt Solution. J de Salles

Potato in Salt SolutionScenarioPlants in the soil have their roots in a dilute solution of mineral ions. When they ... olute; a solvent is a liquid that is able to dissolve another substance, called a solute, to form a solution.The water content of plants varies depending on environmental conditions. In land plants it ... smosis will depend on the balance between external and internal solute and water potentials. If the solutions on each side of the partially permeable membrane are of equal water or solute potential, t ...

(6 pages) 44 0 4.0 Apr/2004

Subjects: Science Essays > Biology

Chemistry Definitions

Hydrogen bombs)Endothermic Reaction: Take in energy (Plants)Reaction Rate: How long it takes for a solution to react; it also has to do with temperatures.Concentration: the purer the product is. HCl, ...

(1 pages) 50 3 3.8 May/2004

Subjects: Science Essays

Finding the concentration of a Potato cell.

of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution.Background informationOsmosis is diffusion of water across a partially permeable membrane. ... und informationOsmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concen ...

(12 pages) 54 0 5.0 May/2004

Subjects: Science Essays > Biology

Case Study for ABC Inc.

company.AlternativesBecause there was more than one problem we must focus on a number of different solutions.Prior planning by Carl could have eliminated some of the issues; however, Carl's inexperie ... more often with Carl: but her job, as operations manager, does not include his supervision.Another solution to the supervision problem could be to increase the staff in the Human Resources Department ...

(3 pages) 239 0 4.6 Apr/2005

Subjects: Area & Country Studies Essays


e, where there are people who are trying to accomplish a goal together, you will find conflict. One solution to workplace conflict is to hold regular staff meetings.Staff meeting is essential to havin ... peaking out or voicing their opinions in meetings.Before we can provide mediation as an alternative solution one must first understand what is mediation? According to T. Moore, the author of " Mediati ...

(6 pages) 332 0 4.0 Jun/2005

Subjects: Literature Research Papers

Effective Management Tools and Techniques.

s through narrow thinking by tapping into ones creativity, calling on every viable, however random, solution imaginable. This helps generate radical ideas and can lead to remarkable results. In order ... le. This helps generate radical ideas and can lead to remarkable results. In order to find the best solution it is important to consider many possible solutions.Brainstorming involves quickly recordin ...

(4 pages) 137 0 5.0 Aug/2005

Subjects: Businesss Research Papers > Management

Analysing aspirin tablets by HCL acid.

re 10.625cmBurette - Hydrochloric Acid (0.10 mol dm?")Burette error - ± 0.1mlPipette solution - Aspirin SolutionPipette error - ± 0.06mlIndicator - Phenolphthalein (colour change ... in SolutionPipette error - ± 0.06mlIndicator - Phenolphthalein (colour change in the aspirin solution from colourless to pale pink)Data Processing and PresentationNaOH = 1.0M before hydrolysis ...

(2 pages) 26 0 3.3 Nov/2006

Subjects: Science Essays > Chemistry

Enzyme Function Lab, explores the role of enzymes in chemical reactions

Part one1. a) When hydrogen peroxide was added to manganese, tiny bubbles formed in the solution- intensity of (1).b)The solution did not change in temperature.c) The bubbles stopped formi ... hydrogen peroxide, the reaction occurred again. Again, small bubbles formed; intensity of (1). The solution did not change in temperature. The reaction lasted about 15 minutes.3. After adding more ma ... the reaction occurred again. This time, the bubbles being formed were larger; intensity of (4). The solution got a little warmer, but the difference in temperature was hardly distinguishable by simply ...

(3 pages) 80 0 0.0 Dec/2006

Subjects: Science Essays > Chemistry


te concentrations. In this lab, we will determine the effects of hypertonic, isotonic and hypotonic solutions on plant and animal cells. In general when an animals cell's placed in hypertonic solution ... ls; a plant cell on the other hand undergoes plasmolysis. When an animal cell's placed in hypotonic solution, it begins to swell and then finally lyse; a plant cell placed in this type of solution how ...

(2 pages) 3293 0 0.0 Nov/2001

Subjects: Science Essays > Biology

Chem Lab 5

Ni2+ ion).Procedure: After the creation of the nickel complex, we had to create a standardized NaOH solution by adding 25ml of 1.0M NaOH and adding it to approximately 225ml of deionized water. Then t ... f 1.0M NaOH and adding it to approximately 225ml of deionized water. Then the molarity of this NaOH solution must be determined by titrating .2M HCl into the NaOH. The molarity of the NaOH is needed i ...

(2 pages) 28 0 0.0 Nov/2001

Subjects: Science Essays > Chemistry

Lab-Potassium nitrate(KNO3) in water

must be increased for the solute to be solved. This is because of that it will be a supersaturated solution if you for example try to dissolve 5 grams of Potassium nitrate (KNO3) in 4 ml of water (H2 ... e able to dissolve the Potassium nitrate (KNO3). When increasing the temperature to 64 degrees, the solution will become saturated, which means that you have dissolved the maximum amount of the solute ...

(2 pages) 11 0 3.0 Dec/2007

Subjects: Science Essays > Chemistry

Conflict Resolution

By: Jason E-mail: Today, I would like to talk to you about the Conflict Resolution Process. I believe this process begins by determining whether there is an actual probem, on ... blem all parties must analize the problem, clarifing all their preceptions, brainstorm for possible solutions, and create or cose the solution that is benifitial for everyone. Then this solution must ...

(2 pages) 32 0 0.0 Feb/2008

Subjects: Businesss Research Papers > Management

AP Biology Lab 1: diffusion and Osmosis

s were made. These errors in our data were a result of the lack of time for our bags to stay in the solution. However, we were still able to complete the objectives of the lab and confirm our hypothes ... ed into or out of the bag, which changed the mass. In the experiment, when the bag contained a 0.2M solution, water entered the bag to make the concentrations inside and outside of the bag more equal. ...

(1 pages) 17 0 3.0 Feb/2009

Subjects: Science Essays > Biology

Cell volume lab

uter.We took small beaker to the front of the room and we filled it ¾ full with the prepared solution. We opened "Lab Group" folder. We then opened "Laboratory 2" folder. We clicked on the sens ... in the table as 0mosm.We opened the program for laboratory 2. We placed the probe in one of the 12 solutions. We started recording by activating the start button. We continued recording until the rea ...

(2 pages) 530 0 0.0 Mar/2009

Subjects: Science Essays > Biology

Chemistry Study Notes - Equilibrium

much more air now and it will still not become saturated once all the water has evaporatedSaturated solution - solute sitting at bottom-CaCO3 (s) Ca2+(aq) + CO22-(aq)-Calcium ions and carbonate ions w ... e at the bottomand re-crystallize. At the same time, some of the solid solute may dissolve into the solution.-energy being used to break the bonds is used to form them (no net energy change)-the RATES ...

(2 pages) 17 0 1.0 Mar/2009

Subjects: Science Essays > Chemistry