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[DOC File]Mole Calculation Worksheet
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You rush to your ACME chemistry lab in your basement. Excitedly you mass the substance. The scale reads 280.875 grams. As you a hum game show tune you pour the substance into your ACME atom counter. The numbers whir by as you finish the tune. As the dials stop spinning you read 2.2575 x10 24 . You ponder your ACME calculator and your periodic ...
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[DOC File]Fermi Questions - Science Olympiad
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Assumptions: the diameter of the head is 1 mm; diameter of an iron atom is 2.5 Angstroms Area of the head of a pin: 1/2* *D2 = 1.5 * (1 mm * 1 cm/10 mm)2 = 1.5 …
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[DOC File]Mole Conversion Worksheet
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: Cancel the label, then punch the numbers in on your calculator. Example: You are massing a 24 K gold chain, and find that it weighs 400 grams. Determine how many moles of Gold atoms you have. Steps 1: Obviously, you are solving for moles. Step 2: Looking at the periodic table, you find that gold weighs 197 AMU, or 197 grams per mole.
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[DOC File]CHEMISTRY WORKSHEET # 2 MOLE PROBLEMS—THE MOLE …
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Molar mass tells us the mass (“weight”) of 1 mol ofan atom or compound. In each case . we simply calculate the sum of the “weights” of the atoms in the formula to determine the weight of a mole. These weights can be found on the periodic table. EXAMPLE: Calculate the molar mass (gram molecular weight) of a mole of iodine, I2.
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[DOC File]Worksheet 2-1 CALCULATOR PRACTICE
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The average amount of energy released in the nuclear fission of one plutonium atom is 210.0 MeV. One MeV is equal to 1 x 106 eV. 1.602 x 10-19 Joules is equal to 1 eV. How much energy (in BTUs) is released from the nuclear fission of one atom of plutonium? (3.188 x 10-14 BTU)
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[DOC File]PS.Ch6.Test.95
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7. A student does a calculation using her calculator and the number 280.27163 is shown on the display. If there are actually three significant figures, how should she show the final answer? a) 280 d) 2.80 x 10-2. b) 280.3 e) 2.80 x 102. c) 280.27. 8. The term that refers to the reproducibility of a laboratory measurement is. a) precision c ...
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[DOC File]PH230 General Physics I, Week 4 Homework
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The density of gallium is 5.9 grams/cm3. What is the diameter of a gallium atom in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, so that an atom of diameter d occupies an amount of space d3 in the solid. Note that the density is equal to the mass of one atom divided by d3.
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[DOC File]Mole Conversions Worksheet
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Gram-formula-mass. 2 F = 2 x 19 g = 38 g/mol. 2.00 x 1023 molecules= 12.6 g. 3. Determine the volume in liters occupied by 14 g of nitrogen gas at STP. Ans. 11.2 L. 4. Find the mass, in grams, of 1.00 x 1023 molecules of N2. Ans. 4.65 g. 5. How many particles are there in 1.43 g of a molecular compound with a gram. molecular mass of 233 g? Ans ...
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[DOC File]Chemistry 101L - Boyd County Public Schools
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2. Determine the number of electron groups surrounding any central atom. Any atom counts as one group, no matter how many bonds are involved. So a single bonded atom counts as one group, and a double bonded or triple bonded atom also counts as one group. Also every pair of non-bonded electrons also counts as a group.
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[DOCX File]Mole Conversions Worksheet
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Gram to Particle Conversions (two step conversions using molar mass and Avogadro’s number) 1. How many oxygen molecules are in 3.36 g of oxygen (O 2) [2 x mass of O]? 2. Find the mass in grams of 2.00 x 1023 molecules of F2. 3. Determine the number of molecules of 14 g of nitrogen dioxide (NO 2). 4.
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Gram to atom calculator