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[DOC File]Calculating Average Atomic Mass Worksheet Name
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Calculate the average atomic mass of copper. 2. Calculate the average atomic mass of sulfur if 95.00% of all sulfur atoms have a mass of 31.972 amu, 0.76% has a mass of 32.971amu and 4.22% have a mass of 33.967amu. 3. The three isotopes of lead are shown below, each with its percent by mass abundance and the composition of its nucleus. Using ...
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[DOC File]Name__________________________________________
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Atoms Worksheet #1. Average Atomic Mass Problems. Average atomic mass: the weighted average of the masses of all the isotopes of that element. A weighted average reflects both the. mass. and the abundance of the isotopes as they occur in nature. Isotope Atomic mass abundance (%) H …
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[DOC File]Isotope Practice Worksheet
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The calculation of the average atomic mass of an atom is performed using the relative abundance data from the isotope of each atom. Average atomic mass = [(% abundance of isotope)(mass of isotope)] + [(% abundance of isotope)(mass of isotope)] + [….] 100 For example: The natural abundance for boron isotopes is 19.9% 10B (10.013 amu*) and 80.1% 11B (11.009 amu*). Calculate the atomic mass of …
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[DOC File]Average Atomic Mass Worksheet - HUBBARD'S CHEMISTRY
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2. The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are 69.2% and 30.8% respectively. Calculate the average atomic mass of copper. 3. Calculate the average atomic mass of sulfur if 95.00% of all sulfur isotopes are Sulfur-32, 0.76% are Sulfur-33 and 4.22% are Sulfur-34. 4.
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Sep 26, 2013 · If each mass was weighted equally this would be the correct way of taking an average. However each mass only exists in a certain percentage therefore, to correctly take an average of isotopes you need to add the masses and percent abundances specific to those masses. 21.991 = Neon-22. 0.27 = Neon-21 Relative Abundance. 20.179 = avg atomic mass
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[DOC File]Isotope Practice Worksheet
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Average Atomic Mass Practice Worksheet. Directions: Multiply the atomic mass of each isotope by its abundance percentage (expressed as a decimal), then add the results. Use the table to find the average atomic mass. Potassium Mass number of isotopes Percent abundance 39 93.12% 41 6.88% Make a prediction before you begin working: _____
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[DOC File]Calculating Average Atomic Mass Worksheet Name
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Calculating Average Atomic Mass Worksheet Name_____ 1. The term “average atomic mass” is a _____average, and so is calculated differently from a “normal” average. 2. The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are 69.2% for a mass of 62.93amu and 30.8% for ...
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[DOC File]Isotope Practice Worksheet
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12. Rubidium is a soft, silvery-white metal that has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 80.2% and the abundance of 87Rb is 19.8%, what is the average atomic mass of rubidium? 13. What is the atomic mass of hafnium if, out of every 100 atoms, 5 have a mass of 176, 19 have a mass of 177, 27 have a mass of 178, 14 have ...
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[DOC File]Chemistry Worksheet
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More Average Atomic Mass. Calculate the average atomic masses. Round all answers to two decimal places. What is the atomic mass of hafnium if, out of every 100 atoms, 5 have a mass of 176, 19 have a mass of 177, 27 have a mass of 178, 14 have a mass of 179, and 35 have a mass of 180.0? Iodine is 80% 127I, 17% 126I, and 3% 128I.
average atomic mass worksheet doc

Honors Chemistry Worksheet – Atomic Structure
The number of neutrons in an isotope may be determined by subtracting the number of protons (atomic number) from the mass number. #n0 = A - Z. If working with the element, the atomic mass may be rounded to a whole number and used as a mass number. 9. An atomic nucleus contains 6 …
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Calculating average atomic mass worksheet