This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Dr. Mariah McMasters CHEM 1001 Fall 2007 Exam 3 FORM 1 On your scantron fill in your name, last name first, and fill in your LSU ID number for the identification number. In the Education/Form box on your scantron, fill in #1. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Hydrogen gas produced in the laboratory by the reaction of zinc and hydrochloric acid was 1) v l^ ^ collected over water at 25°C. The barometric pressure at the time was 742.5 mm Hg. What is the pressure of dry hydrogen gas if the vapor pressure of water at 25°C is 23.8 mm Hg? A17663 6 l'. T j — l 'o - C ©718.7 Pr---lH2.<5— H-v TT) 742.5 mm Hg D) 760.0 'ft*'- -% & % * * _-, E) none of the above - -. "2*5>*(~ ) 2) Which of the following atoms has the least metallic character? 2) A)Na B)Li C 1 5 D ) R b E ) K , . 3) Chlorine and bromine have very similar chemical properties. This is best explained by the fact that 3) bothelements (^A)^iave the same number of valence electrons. B) are in period 3 of the Periodic Table. C) are gases. D) have equal number of protons and electrons. E) none of the above 4m sample of helium gas initially at 37.0°C, 785 torr and 2.00 L was heated to 58.0°C while the 4) volume expanded to 3.24 L. What is the final pressure in arm? A) 517 e,-.T l-.3T > G S -p.- .68i V, -^ none of the above _ 5) The number of cycles of a wave that passes a stationary point in one second is called its 5) A) wavelength ('By/frequency G) crest / E) none of the above- FORM 1 . A 6) What is the proper form of the combined gas law? 6) ~ Vi V 2 E) none of the above . / _ Q~\~ 7)]How many liters of C fy (g) are needed to react completely with 56.0 L of CH4 (g) at STP to produce 7) CO 2 (g) and H 2 O (g)? 2. OT)ol C>2. ' V ' nn c>\. Given: CH4 (g) + 2O 2 (g) - CO 2 (g) * H 2 O (g) . A) 84.0 L (j\ R^ 119 T D)56.oL E) none of the above 8) A 3.76 g sample of a noble gas is stored in a 2.00 L vessel at 874 torr and 25°C, what is the noble 8) A) He B) N e V ^ 2 L ....
View Full Document
This note was uploaded on 11/29/2011 for the course CHEM 1001 taught by Professor Staff during the Fall '08 term at LSU.
- Fall '08