120209a - Percent yield z A 5.95 g sample of AgNO 3 is...

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Unformatted text preview: Percent yield z A 5.95 g sample of AgNO 3 is reacted with excess BaCl 2 according to the reaction that follows to give 4.00 g AgCl. What is the percent yield of AgCl? { 2 AgNO 3 (aq) + BaCl 2 (aq) 2 AgCl (s) + Ba(NO 3 ) 2 (aq) What volume of 18.0 M H 2 SO 4 must be used to prepare 15.5 L of 0.195 M H 2 SO 4 ? 1 6 8 m L 3 3 6 m L 9 2 . 3 m L 2 2 6 m L 60% 3% 11% 26% 1. 168 mL 2. 336 mL 3. 92.3 mL 4. 226 mL What are the oxidation states on carbon in the following molecules and ions: CO, CO 2 , CH 4 and CO 3 2- ? + 2 , + 4 ,- 4 , + 6 + 2 , + 4 ,- 4 , + 4 , + 2 , + 4 , + 4 , + 2 , + 4 , + 6 11% 1% 3% 85% 1. +2, +4, -4, +6 2. +2, +4, -4, +4 3. 0, +2, +4, +4 4. 0, +2, +4, +6 Redox Reaction z Balance the following redox reaction in acid: MnO 4- (aq) + C 2 O 4 2- (aq) MnO 2 (s) + CO 3 2- (aq) Ideal Gas Law z A sample of oxygen gas has a volume of 4.50 L at 27 o C and 800.0 torr. How many oxygen molecules does it contain? Four identical 1.0 L flasks contain the gases He, Cl 2 , CH 4 , and NH...
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This note was uploaded on 10/23/2010 for the course CHEM 105A taught by Professor Bau during the Fall '04 term at USC.

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120209a - Percent yield z A 5.95 g sample of AgNO 3 is...

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