Search found 39 matches

by Banik_Housepian_2K
Thu Mar 16, 2017 11:25 am
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Winter 2017
Replies: 114
Views: 13678

Re: Final Exam Details and Review Sessions Winter 2017

Not particularly related to the final itself, but for future reference - will we still have access to Chemistry Community after this quarter ends? Chem community is a public site, so you do not even need an account to see the forum posts and replies. you can see posts, but if our login does not wor...
by Banik_Housepian_2K
Sun Mar 12, 2017 3:45 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Cyclo-isomers
Replies: 4
Views: 372

Re: Cyclo-isomers

Sophia Rawson 1C wrote:I could be wrong but I believe I drew cyclopropane with an ethyl substituent, cyclobutane with a methyl substituent, and cyclopentane

You are correct
by Banik_Housepian_2K
Wed Mar 08, 2017 10:34 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 15896

Re: Quiz 3 Winter 2017

Teddy_Rosenbluth wrote:Would vinyls be considered functional groups and therefor we don't need to know it for Quiz 3?

I had this question as well, but im pretty sure it wont be on the quiz.
by Banik_Housepian_2K
Fri Mar 03, 2017 4:47 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15320

Re: Quiz 2 Winter 2017

Is there a reason why number six's answer has three significant figures despite the given concentration 0.35M having two significant figures? Do we not bother with sig figs when ln is involved? My TA told me today that there are some weird rules that apply to sig figs with logs and natural logs and...
by Banik_Housepian_2K
Fri Mar 03, 2017 4:44 pm
Forum: *Electrophiles
Topic: Bruincast Friday 2/24
Replies: 5
Views: 668

Re: Bruincast Friday 2/24

Do you guys know if the review session is gonna be recorded today or not?
by Banik_Housepian_2K
Thu Feb 23, 2017 8:22 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15320

Re: Quiz 2 Winter 2017

chris2E wrote:Is there a reason why number six's answer has three significant figures despite the given concentration 0.35M having two significant figures? Do we not bother with sig figs when ln is involved?

Number 6's answer is 0.30M, that's 2 sig figs. And there is no ln involved
by Banik_Housepian_2K
Thu Feb 23, 2017 4:52 pm
Forum: Second Order Reactions
Topic: Slow and Fast Steps [ENDORSED]
Replies: 2
Views: 496

Re: Slow and Fast Steps [ENDORSED]

This was so helpful! thank youu
by Banik_Housepian_2K
Sun Feb 19, 2017 8:53 pm
Forum: Student Social/Study Group
Topic: Study Group Chem 14B
Replies: 5
Views: 630

Re: Study Group Chem 14B

I'm down
by Banik_Housepian_2K
Wed Feb 15, 2017 1:40 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Enthalpy Predictions
Replies: 1
Views: 306

Re: Enthalpy Predictions

The entropy of the system decreases while the entropy of the surroundings increases. This is because we had 2 reactants compared to 1 product, and thus the entropy of the reactants is higher than that of the product.
by Banik_Housepian_2K
Sun Feb 12, 2017 3:09 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

Did you know that you can cool yourself to -273.15˚C and still be 0k?
by Banik_Housepian_2K
Wed Feb 08, 2017 1:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

I like chemistry jokes periodically.
by Banik_Housepian_2K
Wed Feb 08, 2017 1:37 pm
Forum: General Science Questions
Topic: quiz 1
Replies: 3
Views: 629

Re: quiz 1

He also announced that the midterm will cover up to the end of electrochemistry, just in case you were not informed yet.
by Banik_Housepian_2K
Wed Feb 01, 2017 12:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

What kind of fish is made up of 2 sodium atoms?
TuNa
by Banik_Housepian_2K
Wed Feb 01, 2017 12:20 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1: Formulas We Need To Know
Replies: 2
Views: 408

Re: Quiz 1: Formulas We Need To Know

I'm fairly certain that most of the important ones that we will need will be on there and if not,it would be ones that we can derive.
by Banik_Housepian_2K
Thu Jan 26, 2017 4:15 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

Q: What do you call a clown who's in jail?
A: A silicon.
by Banik_Housepian_2K
Thu Jan 26, 2017 4:08 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Isothermal reversible systems
Replies: 2
Views: 357

Re: Isothermal reversible systems

And this equation works because isothermal means that the temperature stays constant, thus we don't need an initial and final temperatures, the initial temp will do.
by Banik_Housepian_2K
Sun Jan 22, 2017 6:08 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Relationship Between Volume and # of States
Replies: 1
Views: 275

Re: Relationship Between Volume and # of States

I believe it has to do with the equation: deltaS=nRln(V2/V1)
by Banik_Housepian_2K
Wed Jan 18, 2017 7:11 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calculating work
Replies: 2
Views: 294

Calculating work

Today we learned how to use the integral to calculate the work done under constant pressure.
I was wondering whether we can use integrals to calculate work if the pressure is not constant, and if so, how?
by Banik_Housepian_2K
Wed Jan 11, 2017 7:29 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

Chemistry is like cooking, just don't lick the spoon.
by Banik_Housepian_2K
Wed Jan 11, 2017 7:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

you're a 10?
Maybe on a pH scale,
cause you're basic.
by Banik_Housepian_2K
Sat Dec 03, 2016 4:38 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Elecrons
Replies: 2
Views: 284

Re: Elecrons

you also have to think about the fact that electrons have the same charge and we know that alike charges repel and it would be very hard to get electrons to collide.
by Banik_Housepian_2K
Wed Nov 30, 2016 12:39 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

take all your lame chemistry jokes and Barium.
by Banik_Housepian_2K
Thu Nov 24, 2016 3:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

getting closer to the final exams, always remember to be like a proton and stay positive.
by Banik_Housepian_2K
Thu Nov 24, 2016 3:22 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: which is more acidic
Replies: 3
Views: 499

Re: which is more acidic

the H3- is electron-donating relative to hydrogen and it donates electrons to the carboxyl group which makes it more negative. This causes the acid to be weaker, because the proton now has to be separated from a more negative conjugate base. likewise, CH3CH2- is more electron-donating than CH3-, and...
by Banik_Housepian_2K
Fri Nov 18, 2016 10:00 am
Forum: Administrative Questions and Class Announcements
Topic: Formula for Coordination Compounds
Replies: 1
Views: 411

Re: Formula for Coordination Compounds

I believe in the formula the order does not matter, but when naming you must name in alphabetical order.
by Banik_Housepian_2K
Fri Nov 18, 2016 9:59 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE box
Replies: 2
Views: 345

Re: ICE box

I believe they must be excluded from the ice box because they are not applicable in equilibrium, only gases and aqueous substances are.
by Banik_Housepian_2K
Mon Nov 14, 2016 2:49 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

How can you tell the difference between a chemist and a train driver?
ask them to pronounce unionized...
by Banik_Housepian_2K
Mon Nov 14, 2016 2:47 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

sodium sodium sodium sodium sodium sodium sodium sodium sodium
BATMAN!
by Banik_Housepian_2K
Wed Nov 09, 2016 12:34 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

What is the chemical formula for banana?
BaNa2
by Banik_Housepian_2K
Wed Nov 09, 2016 12:32 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Z
Replies: 2
Views: 369

Re: Z

it is the atomic number which is the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
by Banik_Housepian_2K
Wed Nov 09, 2016 12:30 pm
Forum: Lewis Structures
Topic: Quiz 2 prep
Replies: 2
Views: 422

Re: Quiz 2 prep

A mistake that i saw a lot of people make with this problem was that they drew the lewis structure in the most stable form(which we are always told to do) which would result in more than an octet for the central atom. But the question specifically asks us to use the octet rule, meaning no atom can h...
by Banik_Housepian_2K
Wed Nov 02, 2016 2:02 pm
Forum: Lewis Structures
Topic: Octet rule
Replies: 7
Views: 548

Re: Octet rule

It cannot have an expanded octet.
by Banik_Housepian_2K
Wed Nov 02, 2016 2:01 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

What do you call an acid with an attitude? An a-mean-oh-acid.
by Banik_Housepian_2K
Wed Nov 02, 2016 1:59 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019956

Re: Post All Chemistry Jokes Here

I have many chemistry jokes. I'm just afraid they won't get a good reaction.
by Banik_Housepian_2K
Thu Oct 27, 2016 4:59 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Presence of Lone Pairs [ENDORSED]
Replies: 2
Views: 293

Re: Presence of Lone Pairs [ENDORSED]

Dear Elle,
I'm a bit unclear about this as well. i believe that it does not matter where it is removed from because once it is removed and the lone pair is put, the other atoms will move and arrange in a way where they are as stable and far away from each other as possible.
by Banik_Housepian_2K
Wed Oct 19, 2016 12:12 pm
Forum: Resonance Structures
Topic: Resonance and Energy [ENDORSED]
Replies: 2
Views: 371

Re: Resonance and Energy [ENDORSED]

Dear Emerald,
I understand that there are delocalized electron, which is why the energy is lower, but how does the electrons being delocalized result in a lower energy?
by Banik_Housepian_2K
Thu Oct 13, 2016 2:23 pm
Forum: Trends in The Periodic Table
Topic: Exceptions to the Periodic Trends
Replies: 3
Views: 3835

Re: Exceptions to the Periodic Trends

Hello Matt, I was wondering about that as well. For instance i know that as we move down the periodic table the radius increases due to the addition of electron shells, but the charge of the nucleus is also greater meaning it pulls the electrons in with a greater force. The trends are great for gene...
by Banik_Housepian_2K
Wed Oct 05, 2016 1:58 pm
Forum: Properties of Electrons
Topic: Constructive and Destructive Interference [ENDORSED]
Replies: 3
Views: 890

Re: Constructive and Destructive Interference [ENDORSED]

what if the waves are neither lined up trough to peak, peak to peak, or trough to trough, and are rather lined up somewhere in the middle. then are they constructive or destructive? how does this work out?
by Banik_Housepian_2K
Mon Sep 26, 2016 7:05 pm
Forum: Properties of Light
Topic: Frequency, wavelength, and Energy of light
Replies: 5
Views: 520

Frequency, wavelength, and Energy of light

Is the energy what determines whether or not a wave is harmful to humans? or does it have to do with the frequency or wavelength?

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