the less water present. Female facing forward 40% 4. List the three fluid compartments and the percentage of total body water in each. a. Intracellular 62% b. Interstitial 30% c. Plasma 8% 5. Give an example of each of the following solutes: a. Ions/electrolytes Sodium b. Colloids Proteins c. Nonelectrolytes Glucose 6. List the major extracellular and intracellular cations and anions a. Extracellular cations: Sodium‚ Potassium‚ Calcium and Magnesium anions: Bicarbonate‚ Sulfate‚ Protein
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LEARNING TASK NO. 4B Composition Stoichiometry Problems Mole Relationship from Chemical Formulas: a) Determine the number of moles of chloride ions in 2.53 mol ZnCl2. b) Calculate the number of moles of each element in 1.25 mol glucose (C6H12O6). c) How many molecules of oxygen atoms are present in 5.00 mol diphosphorus pentoxide? d) Calculate the number of moles of hydrogen atoms in 11.5 mol water. e) A sample of ethanol (C2H5OH) has a mass of 45.6 g.How many carbon atoms does the sample
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Pre-Lab Discussion An empirical formula is a formula for a chemical compound found by direct laboratory examination. Laboratory procedures allow the chemist to find the simplest whole number ratio of elements within the compound. In order to find the true molecular formula‚ the chemist also needs to know the compound’s molecular mass. The general procedure is to use laboratory techniques to determine the mass of each element in the compound. In this lab‚ we will react a known quantity of magnesium
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be reported as: 15.26 15.26 × 100 1.526 × 10 152.6 × 10-1 8 - A quantity of 5.44 mg of a substance can be expressed in scientific notation as: 5.44 × 10-3 g 5.4 × 100 g (544/100) mg 0.54 × 10 mg 9 - Pure tin is classified as: An ion An element A compound A molecule 10 - Element with an atomic number of 14 is a: Metal Non-metal Metalloid None of the above 11 - Anions are formed by the: Gain of electrons Loss of electrons Loss of neutrons Gain of protons
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I https://www.oppapers.com/join.php#submit . Experiments with Metals and Ions of Metals Introduction Metals are similar in their physical properties in general‚ but they are not identical. Most of the metals are solids; few of them are liquids‚ such as mercury and cesium. Density of metals is not similar also. For example‚ sodium has density of 0.97g/cm3 while lead has density of 11.4g/cm3. Melting point of sodium is 98.0oC while for lead it is 327.6oC. Metals have the capability
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Biology 113 Review sheet Chapter 2: * What is a compound and how is it different than an element? Compound is more than one element. An element cannot be broken down by chem. Rxns. * What are the 4 main elements of life? Why? C‚H‚O‚N they make up 96% of living matter and they are found in all of the major macromolecules * Be able to calculate the number of protons‚ neutrons and electrons given an element’s mass number or atomic number. If given this symbol - 4He – can you tell
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a future experiment will have to be conducted because there is not enough evidence to fully conclude what Red #2 is based off of the four experiments conducted. Since we know that Red #2 is ionic‚ we know that a precipitate will form if a certain ion is added to the solution and they are not soluble. A future experiment that can be performed to try and identify this red solution is to obtain 50 mL of red solution #2‚ a graduated cylinder‚ ten 50 mL beakers‚ a scale‚ a stir bar‚ and different elements
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own words‚ the differences between ionic and covalent bonding that account for the differences in their melting points. (4 points)the bond is made in different ways In order to conduct an electrical current‚ a substance must have charged particle s (ions or electrons) that are free-moving (able to move about throughout the sample). Why do you think ionic compounds are not able to conduct electricity as solids‚ even though they can as liquids and in solution (2 points)the water charges the particle
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The Composition of Potassium Chlorate Objectives The objectives of this laboratory are: a) To experimentally determine the mass percent of oxygen in the compound potassium chlorate (KClO3) via the thermal decomposition of a sample of potassium chlorate. b) To qualitatively demonstrate that the residue resulting from the decomposition of potassium chlorate is potassium chloride. Background All compounds consist of elements chemically combined in fixed proportions – they obey the Law of Constant
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Lab Report Electrical Conductivity Introduction There are some substances that are capable of conducting electricity‚ and the reason they conduct electricity is because of the type of compound the substance is. Electrolytes or any ionic compound conduct electricity and nonelectrolytes do not conduct electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion
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