In labs 4.1‚ 4.2‚ and 4.3‚ the connection between the force of gravity and the type of surface was tested through a series of experiments. In lab 4.1‚ the force of gravity was tested through various surface types‚ including: tabletop‚ waxed paper‚ paper towel‚ fine sandpaper‚ and coarse sand paper. In lab 4.2‚ two different surface types that were tested included: tabletop and coarse sand paper. This lab compared the two averages between both tabletop and coarse sandpaper using different amounts
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Determination of the concentration of ethanoic acid in commercial vinegar Introduction: The aim of the experiment was to determine the molarity of ethanoic acid in table vinegar by titrating a sample with alkali sodium hydroxide (NaOH) with a known concentration of 0.1molL-1. The equation of the reaction between ethanoic acid and sodium hydroxide is as follows: CH3COOH + NaOH CH3COONa + H2O When the titrations end point is determined and volumes of reactants are measured the concentration
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Chemistry AP Chapters 4 and 5 Practice Test 1. Which of these compounds is a weak electrolyte? A. HCl B. CH3COOH (acetic acid) C. C6H12O6 (glucose) D. O2 E. NaCl 2. The balanced net ionic equation between aqueous diethyl ammonium chloride and aqueous potassium hydroxide contains which of the following species? A. KCl(s) B. 2 OH-1 C. (CH3CH2)2NH2 (aq) D. H3O+1 E. (CH3CH2)2NH2+1 (aq) 3. In the chemical reaction 5H2O2 + 2MnO4-
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Acids have a pH less than 7. Alkalis have a pH greater than 7. There are a lot of ways for finding the pH of something. One way is to use litmus paper. The pH paper is able to tell how strong the chemical is‚ whether it is a stronger acid or a stronger base. pH is a measure of the concentration of protons (H+) in a solution. Danish Bio-chemist Soren Peter Lauritz Sørensen introduced his concept in 1909. The p stands for the German potenz‚ meaning power or concentration‚ and the H for the hydrogen ion (H+)
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capable of removing grease or oil stains. It will be used for stains found in cloth. Sodium Bicarbonate is also used as a deodorant and can remove odours. It is also used as a replacement for softener when washing clothes with detergent. It is a weak base with a pH of 8.7. The main materials we will use for the experiment are: Sodium Bicarbonate (Baking Soda) Vinegar Water Oil Related Literature: Joy T. (n.d.). Retrieved from http://www.ehow.com/how_6510638_baking-vinegar-stain- remover-mix
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Monica Mahmoudi 02072798 Bandaruk Mon-Wed 12:45 PH Balance in the Human Body As we all know every solution is either acid or alkaline. Alkaline is often called base. These solutions can be anything from body fluids‚ to fruits‚ vegetables‚ seawater‚ beverages you name it. Acid and alkaline is measured in pH. It starts as low as zero being very acidic and works its way up to fourteen being the most basic. The pH of our stomach is 2‚ obviously to digest food‚ wine is 3.5‚water is 7(neutral)‚ arterial
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Lung is introduced to his wife‚ O-lan. Throughout O-lan’s lifetime she has been both a street-beggar and a slave. Having experienced such roles‚ O-lan is equipped with a plethora of skills which benefit the Wang family. O-lan assists Lung in the fields‚ makes the family’s clothes‚ ministers to Lung’s elderly father‚ prepares all of the family’s meals‚ and cares for her own children. Lung relies upon O-lan as he relies upon the land. In this novel by Pearl Buck‚ O-lan symbolizes the earth. Much of
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It approximates the base 10 logarithm of the level of calcite saturation. The Langeleir saturation examines the saturation concept using pH as the main determinant. The LSI obtained can be explained as the pH required to bring the water to equilibrium. Water that indicates
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Research Question People may think of fruit as a sweet‚ healthy option for a snack. What those people do not know is that some of those fruits can be very damaging to their teeth and to their bodies. One reason for this is that a variety of commonly digested fruits are extremely acidic. This experiment will test the pH level of everyday fruits to see how acidic they actually are. When eaten‚ which fruit will have the lowest pH (be the most acidic)? Hypothesis A sign that a fruit is acidic is
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Depending on the pH of the fruit or plant the pigment will give a different color. This pigment can be used to indicate pH. pH is the -log[H+]. Acids increase the concentration of hydrogen ions ([H+]) in a solution and therefore have a low pH. A base will increase the concentration of hydroxide ions ([OH-]) (decreasing the [H+]) in a solution and will have a high pH. Notes: *Another household item from which a pH indicator can be extracted is Ex-Lax. Phenolphthalein is a commonly used indicator
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