{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Homework 23 - Gozick Brandon – Homework 23 – Due Dec 8...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

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

Unformatted text preview: Gozick, Brandon – Homework 23 – Due: Dec 8 2006, 5:00 pm – Inst: D Weathers 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 2) 10 points An ideal gas initially at 477 K undergoes an isobaric expansion at 6 kPa. If the volume increases from 0 . 8 m 3 to . 9 m 3 and 18 . 1 kJ of thermal energy is trans- ferredtothegas, findthechangeinitsinternal energy. Correct answer: 17 . 5 kJ. Explanation: Given : P = 6 kPa , V f = 0 . 9 m 3 , V i = 0 . 8 m 3 , and T i = 477 K . From the first law of thermodynamics Δ U = Q- W = Q- P ( V f- V i ) = 18 . 1 kJ- (6 kPa)(0 . 9 m 3- . 8 m 3 ) = 17 . 5 kJ . 002 (part 2 of 2) 10 points Find the final temperature of the gas. Correct answer: 536 . 625 K. Explanation: From the ideal gas law V i T i = V f T f T f = V f T i V i = (0 . 9 m 3 )(477 K) (0 . 8 m 3 ) = 536 . 625 K . keywords: 003 (part 1 of 1) 10 points Given: R = 8 . 31 J / K / mol , 5 mol of an ideal gas is kept at 3 ◦ C in an expansion from 1 L to 5 L . How much work is done by the gas? Correct answer: 18456 . 7 J. Explanation: Let : n = 5 mol , R = 8 . 31 J / K / mol , T = 3 ◦ C = 276 K , V f = 5 L , and V i = 1 L ....
View Full Document

{[ snackBarMessage ]}

Page1 / 4

Homework 23 - Gozick Brandon – Homework 23 – Due Dec 8...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online