solution quiz1_pdf - pnp223 Quiz 1 VANDEN BOUT (53585) This...

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pnp223 – Quiz 1 – VANDEN BOUT – (53585) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points The specifc heat oF liquid water is 4.184 J/g · C, and oF steam 2.03 J/g · C. The heat oF vaporization oF water ( ) is 2.26 kJ/g and its boiling point is 100 C. What is the total heat ±ow when 18 grams oF water at 12 C are heated to become steam at 109 C? 1. 44.4 kJ 2. 48.9 kJ 3. 47.6 kJ correct 4. over 55 kJ 5. 31.7 kJ 6. 40.7 kJ 7. under 28 kJ Explanation: 18 g H 2 O( ) 12 C step 1 -→ 18 g H 2 O( ) 100 C step 2 -→ 18 g H 2 O(g) 100 C step 3 -→ 18 g H 2 O(g) 109 C Step 1: 4 . 184 J g · C · (18 g) · (100 - 12) C = 6,627 J Step 2: 2 . 26 kJ g · (18 g) · 1000 J 1 kJ = 40,680 J Step 3: 2 . 03 J g · C · (18 g) · (109 - 100) C = 329 J Total = 6627 J + 329 J + 40 , 680 J = 47,636 J = 47.636 kJ 002 10.0 points The phase diagram For a pure substance is shown below. Solid
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solution quiz1_pdf - pnp223 Quiz 1 VANDEN BOUT (53585) This...

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