Search found 31 matches

by Liza Hayrapetyan-3K
Tue Dec 04, 2018 8:27 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Acid dissociation
Replies: 5
Views: 50

Re: Acid dissociation

It's impossible for it to be 100% dissolved, so we must assume its 100%.
by Liza Hayrapetyan-3K
Tue Dec 04, 2018 8:26 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Why is HCOOH a stronger acid than CH3COOH? [ENDORSED]
Replies: 2
Views: 89

Re: Why is HCOOH a stronger acid than CH3COOH? [ENDORSED]

We know that an acid is considered stronger if it can lose a hydrogen easily to a base. Because the CH3 contributes electron density towards the O-H bond, it makes it harder to remove the H and makes acetic acid a weaker acid than formic acid. Basically, formic acid is stronger because CH3 in acetic...
by Liza Hayrapetyan-3K
Tue Dec 04, 2018 8:24 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: “Soapy” feel of bases
Replies: 5
Views: 90

Re: “Soapy” feel of bases

Because they dissolve fatty acids and the oils on your skin, bases give a "soapy-like" feel.
by Liza Hayrapetyan-3K
Tue Dec 04, 2018 8:20 pm
Forum: Bronsted Acids & Bases
Topic: Acetic acid vs Formic acid
Replies: 1
Views: 30

Re: Acetic acid vs Formic acid

We know that an acid is considered stronger if it can lose a hydrogen easily to a base. Because the CH3 contributes electron density towards the O-H bond, it makes it harder to remove the H and makes acetic acid a weaker acid than formic acid. Basically, formic acid is stronger because CH3 in acetic...
by Liza Hayrapetyan-3K
Tue Dec 04, 2018 8:16 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Fundamentals J7
Replies: 5
Views: 132

Re: Fundamentals J7

Thank you this was so helpful! I was stuck on this as well. Do you guys think there will be a question like this on the final?
by Liza Hayrapetyan-3K
Thu Nov 29, 2018 8:44 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 9 Test
Replies: 6
Views: 139

Re: Week 9 Test

You can check online, Professor Lavelle lists what you need to know for the test!

"Test 3 covers: End of Bonding from 3.12 (6 Ed.) and from 2D (7 Ed.); and all of Molecular Shape and Structure (see Syllabus and Outlines for details)."
by Liza Hayrapetyan-3K
Thu Nov 29, 2018 8:40 pm
Forum: Administrative Questions and Class Announcements
Topic: Final
Replies: 11
Views: 262

Re: Final

Does anyone know when the review sessions would be up for the final?
by Liza Hayrapetyan-3K
Thu Nov 29, 2018 8:39 pm
Forum: DeBroglie Equation
Topic: work function and frequency
Replies: 4
Views: 126

Re: work function and frequency

Both answers above are correct, just remember that kinetic energy = initial energy - work function
by Liza Hayrapetyan-3K
Sun Nov 25, 2018 5:34 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 90
Views: 7964

Re: All students read this sig fig post [ENDORSED]

You will still get a few points taken off if the significant figures are not correct.
by Liza Hayrapetyan-3K
Sun Nov 25, 2018 5:33 pm
Forum: Trends in The Periodic Table
Topic: Ionization energy
Replies: 4
Views: 73

Re: Ionization energy

This is because ionization energy decreases as you move across a period.
by Liza Hayrapetyan-3K
Sun Nov 25, 2018 5:32 pm
Forum: Hybridization
Topic: Test 3
Replies: 13
Views: 140

Re: Test 3

Directly from Dr. Lavelle,
"Test 3 covers: End of Bonding from 3.12 (6 Ed.) and from 2D (7 Ed.); and all of Molecular Shape and Structure (see Syllabus and Outlines for details)."
Hope this helps.
by Liza Hayrapetyan-3K
Sun Nov 18, 2018 4:49 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 804745

Re: Post All Chemistry Jokes Here

I tried writing jokes about the periodic table…
…but I realized I wasn’t quite in my element.
by Liza Hayrapetyan-3K
Sun Nov 18, 2018 4:48 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 804745

Re: Post All Chemistry Jokes Here

What should you do if no one laughs at your chemistry jokes?
Keep telling them until you get a reaction.
by Liza Hayrapetyan-3K
Sun Nov 18, 2018 4:46 pm
Forum: Trends in The Periodic Table
Topic: Electronegativity vs. Electron Affinity?
Replies: 9
Views: 169

Re: Electronegativity vs. Electron Affinity?

I'm confident the answer above mine is correct.
by Liza Hayrapetyan-3K
Sun Nov 18, 2018 4:28 pm
Forum: Student Social/Study Group
Topic: curve?
Replies: 20
Views: 644

Re: curve?

That's true! Just work hard to at least get 250 points so you can pass the class.
by Liza Hayrapetyan-3K
Sun Nov 18, 2018 2:07 pm
Forum: Sigma & Pi Bonds
Topic: usage of sigma/pi
Replies: 6
Views: 150

Re: usage of sigma/pi

Thank you! I was also confused by this.
by Liza Hayrapetyan-3K
Sun Nov 18, 2018 1:59 pm
Forum: Administrative Questions and Class Announcements
Topic: DOWNLOAD SESSION WORKSHEETS HERE - Sundays 4-6pm (Karen) [ENDORSED]
Replies: 135
Views: 25099

Re: DOWNLOAD SESSION WORKSHEETS HERE - Sundays 4-6pm (Karen) [ENDORSED]

Thank you so much! When will you be posting the key for this worksheet?
by Liza Hayrapetyan-3K
Mon Oct 29, 2018 10:02 pm
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 28
Views: 15769

Re: How to find my posts

I just want to be clear, so there is no way to get notifications if Professor Lavelle has posted anything?
by Liza Hayrapetyan-3K
Mon Oct 29, 2018 10:00 pm
Forum: Student Social/Study Group
Topic: Studying for tests/midterm
Replies: 18
Views: 916

Re: Studying for tests/midterm

If this is helpful to anyone, I found a cheat sheet with all formulas we would need!

https://drive.google.com/file/d/1ahWSl0 ... sp=sharing
by Liza Hayrapetyan-3K
Mon Oct 29, 2018 9:57 pm
Forum: Administrative Questions and Class Announcements
Topic: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
Replies: 121
Views: 4598

Re: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]

Is this the only review session you will be having?


Lyndon: I have my regular UA sessions 6-8pm Tuesday night in Covel 210 where I review material from each week. This Saturday is my only midterm review session, but it is 3 hours and should be plenty!
by Liza Hayrapetyan-3K
Sat Oct 27, 2018 10:09 pm
Forum: SI Units, Unit Conversions
Topic: Test and Exam Dates
Replies: 10
Views: 322

Re: Test and Exam Dates

Yes, we have that Thursday and Friday off.
by Liza Hayrapetyan-3K
Sat Oct 27, 2018 10:08 pm
Forum: Significant Figures
Topic: knowing how many sig figs to use
Replies: 17
Views: 412

Re: knowing how many sig figs to use

Also, remember to ignore any zeros in the beginning!
by Liza Hayrapetyan-3K
Thu Oct 18, 2018 10:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 804745

Re: Post All Chemistry Jokes Here

Have you heard the one about a chemist who was reading a book about helium?
He just couldn't put it down.
by Liza Hayrapetyan-3K
Thu Oct 18, 2018 10:39 pm
Forum: Properties of Electrons
Topic: eV to J
Replies: 7
Views: 111

Re: eV to J

An eV is a unit of energy equal to approximately 1.602×10−19 joules (symbol J). One eV is equal to the amount of energy one electron acquires by accelerating through a potential difference of one volt.
by Liza Hayrapetyan-3K
Thu Oct 18, 2018 10:34 pm
Forum: Properties of Light
Topic: Test 2 [ENDORSED]
Replies: 15
Views: 236

Re: Test 2 [ENDORSED]

Yes you should refer to the second outline.
by Liza Hayrapetyan-3K
Fri Oct 12, 2018 1:29 pm
Forum: Significant Figures
Topic: Calculators
Replies: 16
Views: 330

Re: Calculators

Amazon has some for really cheap if this helps, I'm sure you can do the calculations yourself but they will be time-consuming.
by Liza Hayrapetyan-3K
Fri Oct 12, 2018 9:27 am
Forum: Molarity, Solutions, Dilutions
Topic: Molarity and Dilution
Replies: 8
Views: 1498

Re: Molarity and Dilution

No, because it mentions how the final volume BECOMES 125 mL meaning it replaces the 75 mL. I think that part was meant to test us.
by Liza Hayrapetyan-3K
Sun Oct 07, 2018 2:11 pm
Forum: SI Units, Unit Conversions
Topic: Modules?
Replies: 8
Views: 116

Re: Modules?

Yeah, our professor just said that we can use them for review. Although they are highly recommended it's not required because Professor Lavelle can't see who has done them or the scores they got.
by Liza Hayrapetyan-3K
Tue Oct 02, 2018 10:06 am
Forum: SI Units, Unit Conversions
Topic: Week 1 Homework Assignment [ENDORSED]
Replies: 16
Views: 366

Re: Week 1 Homework Assignment [ENDORSED]

Yes. I believe that's correct. I think he just wants to see the class communicating with each other.

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