Search found 28 matches
- Sat Dec 08, 2018 10:16 pm
- Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
- Topic: Final Exam
- Replies: 8
- Views: 2421
Re: Final Exam
There shouldn't be any calculations on it but I think it's a good idea to know what it is
- Sat Dec 08, 2018 10:15 pm
- Forum: Bronsted Acids & Bases
- Topic: Lewis vs Bronsted
- Replies: 10
- Views: 1592
Re: Lewis vs Bronsted
Bronsted acids are proton donors, while bronsted bases are proton acceptors.
Lewis acids are electron pair acceptors, while lewis bases are electron pair donors.
Lewis acids are electron pair acceptors, while lewis bases are electron pair donors.
- Sat Dec 08, 2018 10:13 pm
- Forum: Amphoteric Compounds
- Topic: What makes As2O3 amphoteric?
- Replies: 1
- Views: 537
What makes As2O3 amphoteric?
In problem 12.17 part c?
- Fri Nov 23, 2018 3:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework for week 9
- Replies: 11
- Views: 1192
Re: Homework for week 9
I don't think it matters, so I'd just do whatever I'm more comfortable with
- Fri Nov 23, 2018 3:34 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 3
- Replies: 10
- Views: 994
Re: Test 3
I doubt it, most of the work we've been doing has been conceptual
- Fri Nov 23, 2018 3:33 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Drawing Structures on Test
- Replies: 11
- Views: 998
Re: Drawing Structures on Test
No, I don't think it matters
- Fri Nov 23, 2018 3:32 pm
- Forum: Bond Lengths & Energies
- Topic: H bonding
- Replies: 14
- Views: 1544
Re: H bonding
Hydrogen bonding results in higher boiling and melting points
- Fri Nov 23, 2018 3:32 pm
- Forum: Sigma & Pi Bonds
- Topic: Double Bonds
- Replies: 9
- Views: 1047
Re: Double Bonds
Yes, the sigma bond is the first bond and the pi bond(s) are the second and/or third bonds
- Fri Nov 23, 2018 3:30 pm
- Forum: Sigma & Pi Bonds
- Topic: formation of pi bond
- Replies: 6
- Views: 645
Re: formation of pi bond
No, it's sigma first and every subsequent bond on top of that sigma bond (double or triple) is a pi bond
- Sun Nov 11, 2018 1:50 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Isoelectronic
- Replies: 14
- Views: 2179
Re: Isoelectronic
Isoelectronic means that two ions/an ion and an element have the same amount of valence electrons
- Sun Nov 11, 2018 1:49 am
- Forum: Student Social/Study Group
- Topic: Sig Figs on Midterm
- Replies: 13
- Views: 1595
Re: Sig Figs on Midterm
Yep, sig figs are always important on tests, especially midterms and finals
- Sun Nov 11, 2018 1:48 am
- Forum: Bond Lengths & Energies
- Topic: Bond Lengths
- Replies: 5
- Views: 737
Re: Bond Lengths
I assume this is asking about resonance structures, so in that case you just find the average of the given bond lengths of the structure
- Sat Nov 03, 2018 12:11 pm
- Forum: Trends in The Periodic Table
- Topic: Metals, metalloids, and nonmetals
- Replies: 3
- Views: 517
Re: Metals, metalloids, and nonmetals
You should be able to tell by where the element is on the periodic table! I can't really remember off the top of my head, but metals are the left side, the d-block, and the f-block, nonmetals are on the right side, and metalloids are some of the elements between the d-block and the nonmetals. Google...
- Sat Nov 03, 2018 12:06 pm
- Forum: Ionic & Covalent Bonds
- Topic: Electronegativity Difference
- Replies: 6
- Views: 676
Re: Electronegativity Difference
What Dr. Lavelle said about the >2 and <1.5 is just a rough guideline. For electronegativity differences between 1.5 and 2, you would need more information to determine whether it's an ionic or covalent bond.
- Sat Nov 03, 2018 12:04 pm
- Forum: Administrative Questions and Class Announcements
- Topic: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
- Replies: 121
- Views: 21587
Re: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
Thank you so much!
- Sun Oct 28, 2018 9:25 pm
- Forum: Properties of Light
- Topic: Speed of Light
- Replies: 12
- Views: 1015
Re: Speed of Light
If a particle or object has mass, I don’t think it can be faster than the speed of light.
- Sun Oct 28, 2018 9:23 pm
- Forum: Student Social/Study Group
- Topic: Midterm
- Replies: 15
- Views: 1576
Re: Midterm
Yeah, based on what I’ve heard from older students they should be somewhat similar to the last two tests we’ve had
- Sun Oct 28, 2018 9:21 pm
- Forum: Lewis Structures
- Topic: Dot's in the Lewis Structure
- Replies: 10
- Views: 2300
Re: Dot's in the Lewis Structure
I don’t believe that it matters where you begin placing the dots on Lewis Structures, but I think that the dots shouldn’t be uneven on the outer atoms.
- Sun Oct 21, 2018 8:26 pm
- Forum: DeBroglie Equation
- Topic: Remembering mass of electrons for tests
- Replies: 6
- Views: 587
Re: Remembering mass of electrons for tests
I remember either Dr. Lavelle or my TA saying that the mass of electrons would be given
- Sun Oct 21, 2018 8:25 pm
- Forum: Photoelectric Effect
- Topic: Test 2
- Replies: 16
- Views: 1192
Re: Test 2
I believe the test will only be on the Quantum World
- Sun Oct 21, 2018 8:24 pm
- Forum: Properties of Light
- Topic: Sig Figs in Problem 1.13 (6th Edition)
- Replies: 5
- Views: 472
Re: Sig Figs in Problem 1.13 (6th Edition)
Thanks for all the replies, they really cleared things up.
- Wed Oct 17, 2018 7:58 pm
- Forum: Properties of Light
- Topic: Sig Figs in Problem 1.13 (6th Edition)
- Replies: 5
- Views: 472
Sig Figs in Problem 1.13 (6th Edition)
In this problem, there are no given sig figs other than the energy levels, which apparently don't count because the final answer for part (a) has 3 sig figs. How is it that the answer has three sig figs?
- Wed Oct 10, 2018 6:57 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Problem G25
- Replies: 2
- Views: 565
Re: Problem G25
This helped a lot, thanks so much!
- Wed Oct 10, 2018 4:49 pm
- Forum: Empirical & Molecular Formulas
- Topic: Problem L39
- Replies: 1
- Views: 382
Problem L39
Not entirely sure how to do problem L39: A 1.50-g sample of metallic tin was placed in a 26.45-g crucible and heated until all the tin had reacted with the oxygen in air to form an oxide. The crucible and product together were found to weigh 28.35 g. (a) What is the empirical formula of the oxide? (...
- Tue Oct 09, 2018 8:42 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Problem G25
- Replies: 2
- Views: 565
Problem G25
I'm not too sure how to do problem G25 in the 6th edition: Practitioners of the branch of alternative medicine known as homeopathy claim that very dilute solutions of substances can have an effect. Is the claim plausible? To explore this question, suppose that you prepare a solution of a supposedly ...
- Thu Oct 04, 2018 8:56 pm
- Forum: Empirical & Molecular Formulas
- Topic: How many atoms, how many moles are in epsom salts?
- Replies: 2
- Views: 3070
Re: How many atoms, how many moles are in epsom salts?
I attached a picture of my work for this problem, let me know if I need to clarify anything/if you can’t read my writing :)
- Thu Oct 04, 2018 8:34 pm
- Forum: Limiting Reactant Calculations
- Topic: Limiting Reactant vs. Reagent??? [ENDORSED]
- Replies: 6
- Views: 797
Re: Limiting Reactant vs. Reagent??? [ENDORSED]
They're the same thing :)
- Thu Oct 04, 2018 8:30 pm
- Forum: Significant Figures
- Topic: Limiting Reactants
- Replies: 6
- Views: 632
Re: Limiting Reactants
It's the one with the least mass after converting to calculated moles and the required moles. The limiting reactant is completely consumed in the reaction and "limits" how much product is formed.