practiceexam21 - City College, Chemistry Department...

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

View Full Document Right Arrow Icon
City College, Chemistry Department Chemistry 10301, sections T, T2, Τ 3 Prof. T. Lazaridis Second Midterm exam, Oct 29, 2009 Last Name: _____________________________________________ First Name: _____________________________________________ SSN l ast 4 : ______________________________________________ Note: There are 7 questions in this exam (check both sides of the sheet). Fill in your answer in the blank space provided immediately following each question. 1/2 point will be subtracted every time you report a numerical result with an incorrect number of significant figures. The last 3 sheets of this exam contains information that may or may not be needed to answer these questions. SHOW WORK! 1. (18) a. (6) What volume of a 0.2000 M K 2 Cr 2 O 7 solution do we need in order to prepare 100 mL of 0.0400 M K 2 Cr 2 O 7 solution? McVc = Md Vd => Vc = (0.0400 M X 100mL) / 0.2000 M = 20 mL b. (6) We have a sample of gas at 285 o C. To what Celsius temperature must the gas be heated to double its pressure if there is no change in the volume of the gas? Ti= 285 + 273 = 558 K
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.

This note was uploaded on 07/21/2011 for the course CHEM 111 taught by Professor Sawyers during the Spring '11 term at Virginia College.

Page1 / 4

practiceexam21 - City College, Chemistry Department...

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