Exam_3_example

Exam_3_example - Exam#3 Chm120, Dr. Alexander Shekhtman...

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

View Full Document Right Arrow Icon
Exam#3 Chm120, Dr. Alexander Shekhtman Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which one of the following conditions would always result in an increase in the internal energy of a system? A) The system gains heat and has work done on it by the surroundings. B) The system gains heat and does work on the surroundings. C) The system loses heat and does work on the surroundings. D) The system loses heat and has work done on it by the surroundings. E) None of the above is correct. 1) 2) Which one of the following is an exothermic process? A) condensation of water vapor B) boiling soup C) water evaporating D) ice melting E) Ammonium thiocyanate and barium hydroxide are mixed at 25°C: the temperature drops. 2) 3) Which of the following is a statement of the f rst law of thermodynamics? A) Energy lost by the system must be gained by the surroundings. B) A negative ± H corresponds to an exothermic process. C) E k = 1 2 m ± 2 D) 1 cal = 4.184 J (exactly) E) ± E = E f nal - E initial 3) 4) For a given process at constant pressure, ± H is negative. This means that the process is __________.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Exam_3_example - Exam#3 Chm120, Dr. Alexander Shekhtman...

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

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