Search found 8 matches

by Eva_Wetzel_3K
Wed Nov 23, 2016 8:51 pm
Forum: Student Social/Study Group
Topic: Final Study Group
Replies: 12
Views: 1334

Re: Final Study Group

Color me interested, as well. Is everyone off campus for Thanksgiving break?
by Eva_Wetzel_3K
Wed Nov 23, 2016 6:13 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry 14B Enrollment
Replies: 3
Views: 1000

Re: Chemistry 14B Enrollment

In addition to this question, I heard today (in my Life Sci 30A lecture) that the Life Science 30B co-requisite is no longer required to enroll in Chemistry 14B--so that people who couldn't get into 30B might still take their next quarter of Chem. Is this true? It seems to still be a requirement whe...
by Eva_Wetzel_3K
Tue Nov 15, 2016 9:13 pm
Forum: Naming
Topic: How to find the roman numeral when naming compounds [ENDORSED]
Replies: 4
Views: 2519

Re: How to find the roman numeral when naming compounds [ENDORSED]

Hello there! I'll try to answer this. When naming coordination compounds, the roman numeral is the oxidation number of the transition metal. So, if you were dealing with Fe 2+ , the oxidation number would be (II), and if it were Fe 3+ it would be (III), and so on. In this case, we have to figure out...
by Eva_Wetzel_3K
Sat Nov 05, 2016 12:41 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 900575

Re: Post All Chemistry Jokes Here

Q: Why did the Chem student miss a quiz question about positively charged atoms?

A: His tutor had poor communication.
by Eva_Wetzel_3K
Thu Oct 27, 2016 12:47 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Ionic Character in Molecules
Replies: 1
Views: 410

Re: Ionic Character in Molecules

Not a frequent poster, but I will try my best to answer! There are two essential concepts you need to know, I think: 1. As the difference in electronegativity between two atoms increases, so does the ionic character of their bond (because they are "sharing" the electrons less equally). 2. ...
by Eva_Wetzel_3K
Wed Oct 26, 2016 8:50 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Good Visual
Replies: 2
Views: 362

Re: Good Visual

Kudos for finding this cool interactive thing! I find it very helpful to see animations of the orbitals and actually go through the process of "building" the atom myself. This is a good tool for that.
by Eva_Wetzel_3K
Sat Oct 08, 2016 10:55 pm
Forum: Molarity, Solutions, Dilutions
Topic: Quiz 1 Prep: Fall 2015, Question #1 [ENDORSED]
Replies: 1
Views: 275

Quiz 1 Prep: Fall 2015, Question #1 [ENDORSED]

I was able to figure out the first part, but my trouble is with this question in the workbook: "How many milliliters of the stock solution would you need to add to obtain a 250 mL 0.650 M NaOH solution?" (Given that in the previous part of the question, we prepared a 3.0*10^3 mL stock solu...
by Eva_Wetzel_3K
Sat Oct 01, 2016 10:15 pm
Forum: Properties of Light
Topic: Why is UV radiation more harmful than infrared?
Replies: 2
Views: 4590

Why is UV radiation more harmful than infrared?

When I was younger, my sister warned me not to peer through the microwave window while food was cooking because of radiation that might be leaking out through the door. Since then, I've learned that microwaves are not likely to hurt me. This is confirmed in Chapter 1 which shows that microwaves are ...

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