This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: ruisi (hhr239) – Homework 6 (Chapter 3) – sutcliffe – (50985) 1 This printout should have 20 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. This homework is entirely on Chapter 3 to give you some Quest practice on moles, grams and stoichiometry. 001 10.0 points Avogadro’s number is really big. If you had 6.02 × 10 23 dollars, and could spend it at $1 billion (10 9 ) per second for the rest of your life (let’s say 80 years), approximately what percentage of your original money would you have left when you die? 1. 95% 2. 100% 3. 90% 4. 50% 5. 10% 6. 75% 7. 0% 002 10.0 points Which one has the greatest number of atoms? 1. 3.05 moles of argon 2. All have the same number of atoms 3. 3.05 moles of helium 4. 3.05 moles of water 5. 3.05 moles of CH 4 003 10.0 points If one electron weighs 9 . × 10 28 grams, what is the mass of one mole of electrons? 1. 5 . × 10 23 grams 2. 5 . 4 × 10 4 grams 3. 9 . × 10 18 grams 4. 1 . 5 × 10 51 grams 5. 5 . × 10 24 grams 004 10.0 points What is the molar mass for fluoxetine (C 16 H 16 F 3 NO), also known as Prozac circlecopyrt R ? 1. 295.3 g/mol 2. 281.3 g/mol 3. 297.1 g/mol 4. 279.3 g/mol 005 10.0 points Calculate the density of propanol C 3 H 8 O if you know that there are 1 . 069 × 10 25 molecules of propanol in 1.35 L.of propanol in 1....
View
Full
Document
 Fall '07
 Fakhreddine/Lyon
 Chemistry, Mole

Click to edit the document details