{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

CHEM 1&amp;2 Lab Manual &amp; worksheets pg 225

# CHEM 1&amp;2 Lab Manual &amp; worksheets pg 225 -...

This preview shows page 1. Sign up to view the full content.

Factor Label Method General Chemistry I and II Lab Manual Dakota State University page 225 of 232 Problem 2: OK...how about a simpler one, but one that you will need to be able to do eventually in chemistry? First a one-step calculation: The density of ethyl xanthogenic ester is 1.085 g/mL. What volume in mL would you need to get 100 g? Answer: Even if you don't know what ethyl xanthogenic ester is, or even what density is, you can solve this problem using the factor label method (which turns out to be 92.2 mL). Problem 3: Another one-step problem: If the molecular weight of the rather long-named compound 5 β -Pregnan-20
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: α-ol-3-one is 318.50 g/mol, then how many moles (abbreviated mol) would you have if you had 15.00 g? Answer: Just what is this stuff? Dunno. ..don't care, at least not for this problem. Factor label tells us the answer is 0.04710 mol. Problem 4: OK, now let's combine the two types of problems, and see how we do. If we need 0.5000 moles of 3-hexyne, which has a molecular weight of 82.15 g/mol and density of 0.7231 g/mL, what volume in mL do we need to get? Answer : Two step problem here, and one of the types of problems that tends to give students much grief. The answer is 56.80 mL. ..how'd you do?...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern