Search found 28 matches

by Alex Alonso - 4F
Sat Dec 08, 2018 10:16 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Final Exam
Replies: 8
Views: 217

Re: Final Exam

There shouldn't be any calculations on it but I think it's a good idea to know what it is
by Alex Alonso - 4F
Sat Dec 08, 2018 10:15 pm
Forum: Bronsted Acids & Bases
Topic: Lewis vs Bronsted
Replies: 10
Views: 102

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.
by Alex Alonso - 4F
Sat Dec 08, 2018 10:13 pm
Forum: Amphoteric Compounds
Topic: What makes As2O3 amphoteric?
Replies: 1
Views: 40

What makes As2O3 amphoteric?

In problem 12.17 part c?
by Alex Alonso - 4F
Fri Nov 23, 2018 3:35 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework for week 9
Replies: 11
Views: 134

Re: Homework for week 9

I don't think it matters, so I'd just do whatever I'm more comfortable with
by Alex Alonso - 4F
Fri Nov 23, 2018 3:34 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 3
Replies: 10
Views: 170

Re: Test 3

I doubt it, most of the work we've been doing has been conceptual
by Alex Alonso - 4F
Fri Nov 23, 2018 3:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Drawing Structures on Test
Replies: 11
Views: 113

Re: Drawing Structures on Test

No, I don't think it matters
by Alex Alonso - 4F
Fri Nov 23, 2018 3:32 pm
Forum: Bond Lengths & Energies
Topic: H bonding
Replies: 12
Views: 164

Re: H bonding

Hydrogen bonding results in higher boiling and melting points
by Alex Alonso - 4F
Fri Nov 23, 2018 3:32 pm
Forum: Sigma & Pi Bonds
Topic: Double Bonds
Replies: 9
Views: 118

Re: Double Bonds

Yes, the sigma bond is the first bond and the pi bond(s) are the second and/or third bonds
by Alex Alonso - 4F
Fri Nov 23, 2018 3:30 pm
Forum: Sigma & Pi Bonds
Topic: formation of pi bond
Replies: 6
Views: 98

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
by Alex Alonso - 4F
Sun Nov 11, 2018 1:50 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Isoelectronic
Replies: 14
Views: 400

Re: Isoelectronic

Isoelectronic means that two ions/an ion and an element have the same amount of valence electrons
by Alex Alonso - 4F
Sun Nov 11, 2018 1:49 am
Forum: Student Social/Study Group
Topic: Sig Figs on Midterm
Replies: 13
Views: 417

Re: Sig Figs on Midterm

Yep, sig figs are always important on tests, especially midterms and finals
by Alex Alonso - 4F
Sun Nov 11, 2018 1:48 am
Forum: Bond Lengths & Energies
Topic: Bond Lengths
Replies: 5
Views: 200

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
by Alex Alonso - 4F
Sat Nov 03, 2018 12:11 pm
Forum: Trends in The Periodic Table
Topic: Metals, metalloids, and nonmetals
Replies: 3
Views: 53

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...
by Alex Alonso - 4F
Sat Nov 03, 2018 12:06 pm
Forum: Ionic & Covalent Bonds
Topic: Electronegativity Difference
Replies: 6
Views: 50

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.
by Alex Alonso - 4F
Sun Oct 28, 2018 9:25 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 12
Views: 194

Re: Speed of Light

If a particle or object has mass, I don’t think it can be faster than the speed of light.
by Alex Alonso - 4F
Sun Oct 28, 2018 9:23 pm
Forum: Student Social/Study Group
Topic: Midterm
Replies: 15
Views: 276

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
by Alex Alonso - 4F
Sun Oct 28, 2018 9:21 pm
Forum: Lewis Structures
Topic: Dot's in the Lewis Structure
Replies: 10
Views: 116

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.
by Alex Alonso - 4F
Sun Oct 21, 2018 8:26 pm
Forum: DeBroglie Equation
Topic: Remembering mass of electrons for tests
Replies: 6
Views: 100

Re: Remembering mass of electrons for tests

I remember either Dr. Lavelle or my TA saying that the mass of electrons would be given
by Alex Alonso - 4F
Sun Oct 21, 2018 8:25 pm
Forum: Photoelectric Effect
Topic: Test 2
Replies: 16
Views: 269

Re: Test 2

I believe the test will only be on the Quantum World
by Alex Alonso - 4F
Sun Oct 21, 2018 8:24 pm
Forum: Properties of Light
Topic: Sig Figs in Problem 1.13 (6th Edition)
Replies: 5
Views: 65

Re: Sig Figs in Problem 1.13 (6th Edition)

Thanks for all the replies, they really cleared things up.
by Alex Alonso - 4F
Wed Oct 17, 2018 7:58 pm
Forum: Properties of Light
Topic: Sig Figs in Problem 1.13 (6th Edition)
Replies: 5
Views: 65

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?
by Alex Alonso - 4F
Wed Oct 10, 2018 6:57 pm
Forum: Molarity, Solutions, Dilutions
Topic: Problem G25
Replies: 2
Views: 100

Re: Problem G25

This helped a lot, thanks so much!
by Alex Alonso - 4F
Wed Oct 10, 2018 4:49 pm
Forum: Empirical & Molecular Formulas
Topic: Problem L39
Replies: 1
Views: 75

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? (...
by Alex Alonso - 4F
Tue Oct 09, 2018 8:42 pm
Forum: Molarity, Solutions, Dilutions
Topic: Problem G25
Replies: 2
Views: 100

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 ...
by Alex Alonso - 4F
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: 53

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 :)
by Alex Alonso - 4F
Thu Oct 04, 2018 8:34 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactant vs. Reagent??? [ENDORSED]
Replies: 6
Views: 109

Re: Limiting Reactant vs. Reagent??? [ENDORSED]

They're the same thing :)
by Alex Alonso - 4F
Thu Oct 04, 2018 8:30 pm
Forum: Significant Figures
Topic: Limiting Reactants
Replies: 6
Views: 51

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.

Go to advanced search