CHAPTER+3_Drill

CHAPTER+3_Drill - CHAPTER 3 Drills/ Stoichiometry: Chemical...

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CHAPTER 3 Drills/ Stoichiometry: Chemical Calculations 1. In 20 words or less, define the following. You may give example a) Mole b) Limiting reactant c) Actual and theoretical yiels d) Empirical and molecular formula. 2. Complete the following statement, supplying the proper quantity ((CAREFUL!!) a. One mole of chlorine atom (Cl) contain atoms of Cl b. One mole of chlorine molecule (Cl 2 ) contains molecules of Cl 2 . c. One chlorine molecule (Cl 2 ) contains atoms Cl. d. One mole of chlorine molecule (Cl 2 ) contains mole of chlorine atoms (Cl). e. One molecule of Cl 2 contains chlorine atoms (Cl). 3. You need to determine the total number of Cl atoms in 125 mL liquid CCl4 (d = 1.589 g/ml). Explain how you would proceed (that is, write a solution “plan” without doing any calculation) 4. How many sodium atoms are in 6.0 g of Na 3 N? ( ans. 1.3×10 23 ) 5. How many grams of potassium are in 12.5 g of K 2 CrO 7 ? ( Ans. 4.04 g ) 6. (Hard) Calculate the total number of atoms in 48.0 g glucose, C 6 H 12 O 6 . ( Ans. 3.85 x 10 24 )
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7. Calculate the mass of aluminum sulfate that contains 9.14 x 10 22 oxygen a atoms. ( Ans. 43.2 g ) 8. Calculate the mass of 1 atom of copper Cu. ( Ans. 1.06 x 10
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CHAPTER+3_Drill - CHAPTER 3 Drills/ Stoichiometry: Chemical...

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