PRACTICE 3A - Chemistry 110 Name PRACTICE EXAM 3A Section...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 110 Name _______________________ PRACTICE EXAM 3A Section _______________________ Midterm 3 Signature _______________________ IMPORTANT : On the scantron (answer sheet), you MUST clearly fill your name , your student number , section number , and test form (white cover = test form A; yellow cover = test form B). Use a #2 pencil. There are 28 questions on this exam. Check that you have done all of the problems and filled in the first 28 bubbles on the scantron. The maximum score on this exam is 28 points. Your score will be reported in percents (max 100%). Exam policy This cover sheet must be signed and handed in with your answer sheet for your exam to count. Calculators with text-programmable memory are not allowed. Relevant data and formulas, including the periodic table, are attached at the end of this exam. Your grade will be based only on what is on the scantron form. The answer key will be posted on the web after the exam (under "Exam Schedule"). Hints As you read the question, underline or circle key words to highlight them for yourself. Avoid errors from "mis-reading" the question. Pay attention to units and magnitudes (decimal places) of numbers obtained from calculations. There is no penalty for guessing.
Background image of page 1

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

View Full DocumentRight Arrow Icon
CHEMISTRY 110 PRACTICE EXAM 3A ---------------------------------------------------------------------------------- 1. Consider a balloon filled with 5 L of an ideal gas at 20 ° C. If the temperature of the balloon is increased by 70 ° C and the external pressure acting on the balloon remains constant, what would be the new volume of the balloon? A. 4.27 L B. 5.85 L C. 6.19 L D. 17.5 L E. 22.5 L ---------------------------------------------------------------------------------- 2. A 15.0L flask of CH 4 is at 30 ° C and 0.965 atm. How many molecules of methane are in the flask? A. 3.50 × 10 23 B. 2.88 × 10 22 C. 1.44 × 10 23 D. 3.54 × 10 24 E. 1.77 × 10 25 ---------------------------------------------------------------------------------- 3. What is the pressure of the gas in the bulb in the figure below if the height of the column of Hg is 23.5 mm and atmospheric pressure is 0.945 atm? A. 48.3 torr B. 718. torr C. 695. torr D. 742. torr E. 95.3 torr ---------------------------------------------------------------------------------- Open end, P atm
Background image of page 2
---------------------------------------------------------------------------------- 4. A 1.0 L container at 20 °C and 1 atm contains 5.46 g of an unknown gas. What is the gas? A. O 2 B. N 2 C. Ne D. Xe E. CF 4 ---------------------------------------------------------------------------------- 5. The normal boiling points of 5 liquids are given below. Which one has the highest vapor pressure at 25 ° C? substance
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This test prep was uploaded on 02/06/2015 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Winter '08 term at Penn State.

Page1 / 16

PRACTICE 3A - Chemistry 110 Name PRACTICE EXAM 3A Section...

This preview shows document pages 1 - 4. Sign up to view the full document.

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