s11q2Key - 1. Chem 171 Quiz 2 Version A A 32.65 g sample of...

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Chem 171 Quiz 2 Version A 1. A 32.65 g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.00 mL. The solid and toluene together weigh 58.58 g. The density of toluene at the temperature of the experiment is 0.864 g/mL. What is the density of the solid? Mass of toluene = 58.58 g – 32.65 = 25.93 g Volume of toluene = 25.93 g x 1mL/0.864 g = 30.01 mL Volume of solid = 50.00 – 30.01 = 19.99 mL Density of solid 32.65 g / 19.99 mL = 1.63 g/mL 2. Predict whether a reaction will occur in the following case. If there is a reaction write the molecular equation, complete ionic equation, net ionic equation and identify any spectator ions. Show the states. Pb(NO 3 ) 2 (aq) + 2 KCl (aq) Æ Pb(NO 3 ) 2 (aq) + 2 KCl Æ PbCl 2 (s) + 2 KNO 3 (aq) Pb 2+ (aq) + 2 NO 3 - (aq) + 2K+ (aq) + 2 Cl - (aq) PbCl 2 (s) + 2 K + (aq) + 2 NO 3 - (aq) Pb 2+ (aq) + 2 Cl (aq) PbCl 2 (s) NO 3 - , K + are spectator ions Chem 171 Quiz 2 Version B 1. a) Define Archimedes’ principle. b) If a cubic meter of a solid weighing 240 kg is placed in water, what percentage of its
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This note was uploaded on 02/21/2012 for the course ENGLISH 101 taught by Professor Smith during the Spring '07 term at Rutgers.

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s11q2Key - 1. Chem 171 Quiz 2 Version A A 32.65 g sample of...

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