{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture10, 1-30-08

# Lecture10, 1-30-08 - 1 A B C D E The temperature of 3.00 kg...

This preview shows pages 1–5. Sign up to view the full content.

1. The temperature of 3.00 kg of ethane (C 2 H 6 ) is increased from 25.0°C to 73.9°C in a rigid vessel (constant volume). C v for C 2 H 6 = 44.6 J/K·mol. Which of the following expressions is equal to the internal energy change, Δ E, for this process? Correct Answer E A. Δ E = 48.9 K(44.6 J/K·mol) B. Δ E = - 48.9 K(44.6 J/K·mol) C. Δ E = 3 × 48.9 K(44.6 J/K·mol) D. Δ E = -3 × 48.9 K(44.6 J/K·mol) E. None of the above

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2. For nitrogen gas the values of C v and C p at 25°C are 20.8 J K-1 mol-1 and 29.1 J K-1 mol-1, respectively. When a sample of nitrogen is heated at constant pressure, what fraction of the energy is converted to work? Correct Answer C
3. One mole of an ideal gas with a volume of 22.4 L and a pressure of 1.0 atm is allowed to expand at constant T = 273 K into an evacuated bulb to give it a total volume of 224 L. What are the values of q and w for this gas expansion? Correct Answer A

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 18

Lecture10, 1-30-08 - 1 A B C D E The temperature of 3.00 kg...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online