failure. She is awake‚ alert‚ oriented‚ and complaining of severe back pain‚ nausea and vomiting and abdominal cramps. Her vital signs are blood pressure 100/70 mm Hg‚ pulse 110‚ respirations 30‚ and oral temperature 100.4°F (38°C). Her electrolytes are sodium 120 mEq/L‚ potassium 5.2 mEq/L; her urinary output for the first 8 hours is 50 ml. The client is displaying signs of which electrolyte imbalance? A. Hyponatremia B. Hyperkalemia C. Hyperphosphatemia D. Hypercalcemia Assessing the laboratory
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is: Ccal=qcal∆T qrxn=nLR x ∆H The students are the ones responsible in preparing their own solution. Inside the test tube the students put the reagents used for calibration to determine the heat capacity of the calorimeter. These reagents are: sodium hydroxide and HCl. Then the students measure the temperature with 15 seconds intervals. The students made two trials and determine the change in temperature which is needed for the calculations. After the calibration‚ the students
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demonstrates the similarity between the value of the sum for Reaction 1 and Reaction 2’s change in temperature‚ compared to Reaction 3’s change in temperature. Reaction 1 was the dissolution of solid sodium hydroxide in water with a ΔH°rxn of -47047 J/mol‚ Reaction 2 was the neutralization of liquid sodium hydroxide with HCl with a ΔH°rxn of -31289 J/mol and Reaction 3 was the dissolution and neutralization of solid NaOH with HCl with a ΔH°rxn of -91000 J/mol. Consequently‚ the sum of Reaction 1 and
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The Nervous System: Membrane Potential 1. Record the intracellular and extracellular concentrations of the following ions (mM/L): | Intracellular | Extracellular | Sodium (Na+) | 15 | 150 | Potassium (K+) | 150 | 5 | Chloride (Cl–) | 10 | 125 | 2. Excitable cells‚ like neurons‚ are more permeable to K+ than to Na+. 3. How would the following alterations affect the membrane permeability to K+? Use arrows to indicate the change in permeability. a. An increase in the number of passive
Free Action potential Potassium Neuron
FOUNDATION IN SCIENCE INTRODUCTION TO PRACTICAL ORGANIC CHEMISTRY – MAKING AND PURIFYING ORGANIC COMPOUNDS Stage 1 – Deciding how much reagent to use Most organic reactions do not go to completion; most reach an equilibrium position with significant quantities of reactants still remaining. In addition‚ separating the desired product from the rest of the reaction mixture‚ and then purifying it‚ will result in the loss of more of the product. The amount of product obtained expressed as a percentage
Free Distillation Sulfuric acid Acetic acid
From the experiment‚ it was determined that Sodium chloride had a crystalline structure‚ even after being broken into smaller pieces with a hammer. Even though there was two different types of Sodium chloride‚ coarse and fine‚ they still had a symmetrical‚ three-dimensional shape. All ionic compounds have this structure. It was also found that Sodium chloride had a high melting point and sugar had a low melting point. This is because Sodium chloride is ionic and the bonds holding it together take
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Dehydration Jessica M. Hescott Lisa Morris May 11th‚ 2011 What is Dehydration & What causes it? Water is essential to maintaining a state of good health. Considering the adult body is comprised of nearly
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the effect of concentration of thiosulphate on the rate of reaction between sodium thiosulphate and hydrochloric acid. Introduction: Word Equation for the reaction: Balanced Symbol Equation for the reaction: Observations during the reaction: • A yellow precipitate of Sulphur starts to form and the reaction mixture goes cloudy. • A colourless‚ poisonous gas of sulphur dioxide is given off. • Sodium Chloride (salt) and Water also form. The salt dissolves in the solution‚ and
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Experiment 4: To recover cyclohexanone from the oxidation of cyclohexanol by hypochlorite Experiment 6: To recover adipic acid from the oxidation of cyclohexanone CHEMICAL REAGENTS Cyclohexanol Acetic Acid Chlorine (Bleach) Thymol Blue (indicator) Sodium Hydroxide These reagents were all used during experiment 4. APPARATUS USED Simple distillation apparatus 250mL round bottomed flask PROCEDURE: Experiment 4 8 mL of cyclohexanol was placed into a 250 mL Erlenmeyer flask‚ and then a thermometer
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Experiment: Reaction of distilled water and solid sodium hydroxide RESEARCH QUESTION How does the heat released during the reaction between distilled water and Group 1 elements (lithium‚ sodium and potassium) vary as one goes down the group? OBJECTIVE The objective of the experiment is to measure the heat change during the reactions with minimal heat loss to the surroundings. MATERIALS The materials to be used in this experiment are: • Lithium‚ sodium‚ and potassium metal are the three Group 1 elements
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