gate for sodium which closes at specified mV and the membrane repolarizes before initiating another action potential. Equilibrium Potential 1) Because there are no sodium
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the salt and our reactions to it. Since sodium-chloride is nontoxic our response to the dosage was measured by taste. This same method can be seen in medical studies for new drugs. Instead of students the doctors use mice and they test for the mice’s reaction to the medicine. Instead of testing the mice’s taste‚ they look for negative/positive side effects the mice might have Intro Different salts can elicit all five basic tastes‚ e.g.‚ salty (sodium chloride)‚ sweet (lead diacetate‚ which
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100 mL. Interesting results may be obtained by comparing the acidity of both samples of vinegar with factory analysis data. 2. Principle The content of acetic acid in vinegar will be determined by acid – base titration with the standard solution of sodium hydroxide with approximate concentration c(NaOH) = 1 mol/L. This is prepared using the primary standard reagent potassium hydrogen phthalate. The time for one titration is about 10 minutes. 2.1. Acid – base titration An acid – base titration is a
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Comparing to my prediction‚ the results were a bit different. I predicted that both were able to diffuse‚ but at the end‚ only glucose diffused. 4. Put the following in order from smallest to largest molecular weight: glucose‚ sodium chloride‚ albumin‚ and urea. a. Sodium chloride‚ urea‚ glucose‚ albumin Activity 2 5. Explain one way in which facilitated diffusion is the same as simple diffusion and one way in which it differs. a. Simple diffusion moves molecules from an area of higher concentration
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Chapter 1: What is Nutrition? What Drives Our Food Choices? We Need to Eat and Drink to Live Nutrients: compounds in foods that sustain your body processes. There are 6 classes of nutrients: carbs‚ fats (lipids)‚ proteins‚ vitamins‚ minerals and water 3 of 6 classes of nutrients: carbohydrates‚ fats‚ protein- provide energy in the form of kilocalories 2 of 6 classes of nutrients: vitamins and minerals‚ help regulate many body processes‚ including metabolism 1 of 6 class of nutrients- water
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commonly defined as a serum sodium concentration ≤135 meq/L [2]. An overview of the causes of hyponatremia will be presented here (table 1). Most of the individual disorders are discussed in detail separately‚ as are issues related to diagnosis and treatment [1‚3]. (See "Diagnosis of hyponatremia" and "Overview of the treatment of hyponatremia".) It should also be emphasized that‚ in selected patients‚ multiple factors may contribute to the fall in the plasma sodium concentration. Symptomatic
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Report of redox titration--- Iodine titrated against sodium thiosulphate Objectives The objective of this experiment is to balance the equation for the reaction between sodium thiosulphate and iodine. Principle As the reaction between sodium thiosulphate and iodine is a redox reaction‚ so I make use of this to perform a redox titration‚ iodine titrated against sodium thiosulphate. From the experimental result‚ I can find out the number of mole of the two substances‚ hence I can calculate
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citrate and sodium carbonate were mixed together‚ then the products were filtered out as so only the precipitate remained. The filtered paper was then dried and the mass of the precipitate in the experiment divided by the theoretical mass of the precipitate from the calculated gave the percent yield. The percent yield that was acquired is about 69.1%. The chemical reaction that took place was that sodium displaced calcium in a solution of calcium nitrate‚ and that calcium displaced sodium in a solution
Free Stoichiometry Chemical reaction Sodium
compounds are highly soluble in dilute aqueous sodium hydroxide because the acid is deprotonated by the base producing the sodium carboxylate salt. RCO2H(solv) + OH–(aq) → RCO2–(aq) + H2O(aq) The carboxylic acid can be selectively isolated by dissolving the mixture in an organic solvent that is immiscible with water‚ and then extracting the solution with sodium hydroxide. The basic aqueous solution containing the carboxylate salt is acidified‚ causing the sodium carboxylate salt to convert back to the carboxylic
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Aqueous Solutions Reactions‚ Metathesis (Double Replacement) Reactions and Net Ionic Equations Terrance Shelton Introduction India’s cultural treasure and biggest tourist attraction is slowly losing its magnificent appeal due to decades of acid rain. The walls of the Taj Muhal are composed of a marble-like substance ( CaCO3) that corrodes and eventually crumbles when reacted with acid rain(H2SO4). Not only is the Taj Muhal suffering‚ but also other historic landmarks across the world. This is
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