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[DOC File]Isotope Practice Worksheet
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Average atomic mass = [(19.9%)(10.013)] + [(80.1%)(11.009)] 100 = 10.811 (note that this is the value of atomic mass given on the periodic table) *amu is the atomic mass unit (u, μ or amu), which is defined as 1/12th the mass of a carbon-12 atom. This value is arbitrary and simply provides a reference point for measuring relative atomic masses.
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[DOCX File]Chemistry Unit 1 (mainly Ch
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Explain Bohr’s contribution to the atomic model. Know how these experiments changed the model of the atom. Be able to compare the charge, location and mass of the 3 main subatomic particles. Define atomic number and be able to give the number of particles for any element. Calculate average atomic mass for a given set of isotopes.
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[DOC File]AVERAGE ATOMIC MASS LAB
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Determine the mass of each isotope. Find the percent abundance of each isotope. Calculate the average atomic mass of Beanium. MATERIALS: Balance, Sample of Beanium, Calculator. PROCEDURE: Sort the Beanium sample into the different Isotopes (by color.) Diagram each isotope. Pick one of the isotopes to be #1. Record the . MASS of all isotopes #1.
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Modeling Isotopes – Calculating the Atomic Mass of “Snackium”
Mass number Exact weight (amu) Percent Abundance 12 12.000000 98.90 13 13.003355 1.10 Find the average atomic mass for silicon, and check your answer. Mass number Exact Weight (amu) Percent Abundance 28 27.976927 92.23 29 28.976495 4.67 30 29.973770 3.10 Find the average atomic mass for molybdenum and check your answer.
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[DOC File]Mole Calculation Worksheet
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1 mole = molar mass (could be atomic mass from periodic table or molecular mass) 1 mole = 22.4 L of a gas at STP (You do not need to worry about this yet) Each definition can be written as a set of two conversion factors. They are: 1 mole = molar mass(g) can be written as ____ 1 mole OR _molar mass (g)
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[DOC File]Atoms and Isotopes Worksheet
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Isotope Isotope Notation Atomic # Protons Electrons Neutrons. Nickel-58 15 15 53 74 36 48 34 45 Calcium-40 Chlorine-37 Calculate the average atomic mass of chlorine if its isotopes and % abundances are as follows. Show all work. Mass of Isotope % abundance 36.96590 24.47 34.96885 75.53
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[DOC File]Calculating Average Atomic Mass Worksheet Name
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The relative abundance and atomic masses are 69.2% for a mass of 62.93amu and 30.8% for a mass of 64.93amu. 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.
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[DOC File]DAY 1: ATOMIC STRUCTURE & AVERAGE ATOMIC MASS
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2. Two isotopes are known for Element Y. 35.0% of all the atoms of Element Y have an atomic mass of . amu. 65.0% of the isotopes have an atomic mass of 32.0amu. Find the average atomic mass of Element Y. 29.7 (0.35) + 32.0 (0.65) = 31.195amu. 3. Element Z has three isotopes. The atomic mass and abundance of each is given below.
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Atomic mass calculator