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H01- Chapter 16.10-11

# H01- Chapter 16.10-11 - fernandez(jf23742 H01 Chapter...

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1 This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page – Fnd all choices before answering. 001 10.0 points How much NaNO 3 is needed to prepare 225 mL of a 1.55 M solution of NaNO 3 ? 1. 29.6 g 2. 4.10 g 3. 0.244 g 4. 0.132 g 5. 12.3 g 002 10.0 points What is the Fnal concentration of NaOH when 335 mL of 0.75 M NaOH are mixed with 165 mL of 0.15 M NaOH? 1. 0.45 M 2. 0.82 M 3. 0.18 M 4. 1.67 M 5. 0.55 M 003 10.0 points What is the molarity of a solution containing 3.50 grams of NaCl in 500 mL of solution? 1. 7 . 69 × 10 - 2 M 2. 1 . 54 × 10 - 2 M 3. 6 . 00 × 10 - 1 M 4. 1 . 20 × 10 - 1 M 5. 5 . 98 × 10 - 2 M 004 10.0 points How many mL of a 0.75 N KOH solution should be added to a 500 mL ±ask to make 500 mL of a 0.300 M KOH solution? 1. 250 mL 2. 50 mL 3. 500 mL 4. 100 mL 5. 1250 mL 6. 200 mL 005 10.0 points What is the mass of oxygen gas in a 14.9 L container at 31.0 C and 3.22 atm? Answer in units of g. 006 10.0 points A mixture of oxygen and helium is 92.3% by mass oxygen. It is collected at atmospheric pressure (745 torr). What is the partial pressure of oxygen in this mixture? 1. 448 Torr 2. 688 Torr 3. 412 Torr 4. 299 Torr 5. 333 Torr 007 10.0 points ²or the vaporization of water at some temper- ature, which of the following is ²ALSE? 1.

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H01- Chapter 16.10-11 - fernandez(jf23742 H01 Chapter...

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