ExamIFormD2008KEY

ExamIFormD2008KEY - 2 2 3 3 2-2 2 2 1 2-1 2-2 3 2 a b c d e 2 2 3 3 2-2 2 2 1 2-1 2-2 3 2 a b c d e Exam I Form D KEY Name print last print first

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Unformatted text preview: 2 2 3 3 2-2 +2 +2 +1 +2-1 +2-2 +3 +2 a) b) c) d) e) 2 2 3 3 2-2 +2 +2 +1 +2-1 +2-2 +3 +2 a) b) c) d) e) Exam I Form D KEY Name : __________________,_______________ print last print first CH101 Bigham Spring 2008 unity ID __________________ (ex jlsmith2) 1. (6 pts) a. What is the molar mass of magnesium carbonate (MgCO 3 ) ___ 84.32 __ g/mol b. How many atoms of magnesium are in 1.00 gm of MgCO 3 ? 1g*(1 mol/84.32g)(6.02x10 23 at MgCO 3 /mol)(1 at Mg/MgCO 3 ) = 7.14x10 21 _______________atoms 2. (3 pts) Classify each of the following as a metal or non-metal . Cl __ non-metal __ Fe ____ metal __ Mg ___ metal ___ 3. (6 pts) When 2 mol of Na 2 SO 4 is added to 6 mol of carbon and allowed to react according to the following equation: Na 2 SO 4 + 4C b Na 2 S + 4CO a. What is the limiting reactant? ____ C ______ b. How many moles of sodium sulfide can be formed? ____ 1.5 _______ c. How many moles of the excess reactant will be left over? ____ 0.5 ______ 4. (6 pts) Consider the image below, which shows the distance between charged particles in meters. If the dielectric constant of the solvent is the same in all cases, then: Which system (a, b, c, d, or e) has the most repulsive force? ____ c _____...
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This test prep was uploaded on 03/29/2008 for the course CH 101 taught by Professor Bigham during the Spring '08 term at N.C. State.

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ExamIFormD2008KEY - 2 2 3 3 2-2 2 2 1 2-1 2-2 3 2 a b c d e 2 2 3 3 2-2 2 2 1 2-1 2-2 3 2 a b c d e Exam I Form D KEY Name print last print first

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