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[DOC File]Chemistry Worksheet Stoichiometry
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25. 5.50 x 1025 molecules of carbon monoxide. 26. 2.66 x 1022 formula units of potassium iodide. Determine the mass in grams of each of the following quantities. 27. 1.24 moles of beryllium. 28. 3.35 moles of calcium. 29. 0.155 mole of sulfur. Calculate the number of moles in each of the following samples. 30. 6.35 g lithium. 31. 346 g zinc. 32 ...
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[DOC File]CHAPTER 2 - ATOMS & MOLECULES
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Molar mass is defined as the mass (in grams) of 1 mole of a substance. This quantity also contains the Avogadro's number (6.022 x 1023) of molecules or formula units of the compound. The molar mass of a compound is the total sum of atomic masses (in grams) of individual elements that appear in the formula of that compound.
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[DOC File]AP* Chemistry
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• molar mass, MM--the mass in grams of Avogadro's number of molecules; i.e. the mass of a. mole! • molecular weight, MW--sum of all the atomic weights of all the atoms in the formula (it is. essential you have a correct formula as you’ll painfully discover!) • empirical formula--that ratio in …
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[DOC File]Grams, Moles, and Molecules
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Substance Grams Formula mass (g/mol) Moles Formula Units (ie. molecules) He 0.0035 Cl2 0.0000634 O3 0.0005027 HBr 0.013 NaOH 0.02998 PbSO4 0.050 CH4 0.00874 CH2Cl2 0.00385 CH3CH2OH 1.0067 C6H12O6 6.0786 5. What is the conversion factor between grams of a component of interest and grams of total compound? 6.
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[DOC File]Conversion Practice Name
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HOW TO FIND REPRESENTATIVE PARTICLES (ATOMS, MOLECULES, IONS, FORMULA UNITS) WHEN GIVEN MASS (GRAMS):. Given grams . 1 mole. 6.02 x 1023. particles = (molar mass) grams . 1 mole. Ex 6: How many . molecules of CO2. are in . 355 g of CO2? 355 g CO2. 1 mole. CO2 . 6.02 x 1023. molecules CO2 = 4.86 x 1024 atoms CO2
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[DOC File]Mole Conversion Worksheet
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The molecular formula of aspartame is C14H18N2O5 . a) Calculate the gram-formula-mass of aspartame. b) How many moles of molecules are in 10 g of aspartame? c) What is the mass in grams of 1.56 moles of aspartame? d) How many molecules are in 5 . mg. of aspartame? e) How many atoms of nitrogen are in 1.2 grams of aspartame?
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[DOC File]Empirical and Molecular Formulas
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You decide to analyze the compound chemically. Your analysis of a 25.00-gram sample produces 8.906 grams of potassium, 4.241 grams of iron, 5.471 grams of carbon, and the rest is nitrogen. Which compound were you given? You are given a hydrate of magnesium sulfate, MgSO4 xH2O, where x is the number of water molecules per formula unit of MgSO4.
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[DOCX File]Chemistry I
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Determine what you are trying to find – grams, moles, molecules, atoms, or ions. Next to the given amount construct your “picket fence.” Put the given unit on the bottom of the picket fence (underneath the line in the denominator), and put the desired unit on top of the picket fence (the unit you are looking for goes in the numerator).
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[DOC File]Chemistry
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A 2.65-gram sample of powder contains 0.70 grams of chromium, 0.65 grams of sulfur. The other element in the powder is oxygen. The compound has a molar mass of 392.2 g/mol. Determine the molecular formula for the compound.
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[DOC File]Dimensional Analysis WorkSheet
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1 mol = 6.02 x 1023 particles [atoms, molecules, formula units] 1 mol = Molar Mass [also called gram-formula-mass] 2.Solve the following problems: a. How many molecules are there in 400 grams of glucose, C6H12O6? b. How many grams are 1.20 x 1025 atoms of phosphorous? c. How many atoms are in 0.750 grams of zinc? d.
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Grams to molecules formula