chem 1 exam 2 fall 07 - Chemistry 1450; Exam 2 Name_ Fall...

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Chemistry 1450; Exam 2 Fall 2007 Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which one of the following compounds is insoluble in water? A) PbSO 4 B) K 2 SO 4 C) NaNO 3 D) Rb 2 CO 3 1) 2) The limiting reagent in a chemical reaction is the one that A) has the largest molar mass. B) has the smallest molar mass. C) has the smallest coefficient. D) is consumed completely. 2) 3) The combustion of hexane is described by the following process: 2C 6 H 14(l) + 19O 2(g) • 12CO 2(g) + 14H 2 O (g) What is the maximum number of moles of water that can be produced from the reaction of 0.100 moles of C6H14 with 1.40 moles of O2? A) 0.35 moles B) 0.70 moles C) 1.40 moles D) 2.80 moles 3) Box (1) represents 1.0 mL of a solution of particles at a given concentration. 4) Which of the boxes (2)-(5) represents 1.0 mL of the solution that results after (1) has been diluted by adding enough solvent to make 2.0 mL of solution? A) box (2) B) box (5) C) box (4) D) box (3) 4) 5) Which compound has the lowest percentage of chlorine by mass? A) HClO B) LiClO 2 C) NaClO 3 D) KClO 4 5) 6) The mixing of which pair of reactants will result in a precipitation reaction? A) HCl( aq ) + Ca(OH) 2 ( aq ) B) K 2 SO 4 ( aq ) + Ba(NO 3 ) 2 ( aq ) C) CsI( aq ) + NaOH( aq ) D) NaNO 3 ( aq ) + NH 4 Cl( aq ) 6) 1
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7) A balanced equation should be able to tell you all but which one of the following? A) The number of moles of reactants and products
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chem 1 exam 2 fall 07 - Chemistry 1450; Exam 2 Name_ Fall...

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