Search found 94 matches
- Mon Mar 09, 2020 8:44 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3650477
Re: Post All Chemistry Jokes Here
good luck on finals yall
- Mon Mar 09, 2020 8:36 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalysts
- Replies: 28
- Views: 1798
Re: Catalysts
the curve is going to be lowered because the activation energy will be lowered
- Mon Mar 09, 2020 8:32 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 2020 UA Picture!!!
- Replies: 2
- Views: 269
Re: 2020 UA Picture!!!
CUTEEEEEE
- Mon Mar 09, 2020 8:30 pm
- Forum: Van't Hoff Equation
- Topic: Van’t Hoff Equation
- Replies: 11
- Views: 945
Re: Van’t Hoff Equation
it is used to calculate k at different temperatures
- Mon Mar 09, 2020 8:28 pm
- Forum: General Science Questions
- Topic: Review Packet
- Replies: 14
- Views: 1270
Re: Review Packet
Can someone share if we got a review packet??
- Mon Mar 09, 2020 8:26 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: purpose
- Replies: 4
- Views: 368
Re: purpose
The Arrhenius equation can be used to determine the effect of a change of temperature on the rate constant, and consequently on the rate of the reaction. If the rate constant doubles, for example, so does the rate of the reaction
- Mon Mar 09, 2020 8:25 pm
- Forum: General Science Questions
- Topic: Test 2 Grades [ENDORSED]
- Replies: 23
- Views: 1637
Re: Test 2 Grades [ENDORSED]
youll get them this week during discussion
- Mon Mar 09, 2020 8:24 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Study Advice
- Replies: 73
- Views: 7179
Re: Study Advice
you should go through topics on your own and maybe to optimize your time to attend the workshops of topics you don't understand that much and the ones you do skip out unless you have the time. Also, on Thursday from 6-9pm they are covering all topics I think so that should be good.
- Mon Mar 09, 2020 8:20 pm
- Forum: General Science Questions
- Topic: Final
- Replies: 7
- Views: 631
Re: Final
i think the test is 8 questions or around that. He'll usually at least include one question for it or it'll be included in like parts of whole questions
- Mon Mar 09, 2020 8:16 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Week 9 Wednesday lecture
- Replies: 7
- Views: 458
Re: Week 9 Wednesday lecture
yes it would be in the zeroth order
- Mon Mar 09, 2020 8:12 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 21
- Views: 1437
Re: Final
unfortunately, I doubt they will make the test take home, but on the website, you can find your location
- Mon Mar 09, 2020 8:10 pm
- Forum: Student Social/Study Group
- Topic: Need suggestions on study websites
- Replies: 4
- Views: 462
Re: Need suggestions on study websites
khan academy, they have an app also
- Wed Mar 04, 2020 2:28 pm
- Forum: Van't Hoff Equation
- Topic: Van Hoff Equation
- Replies: 2
- Views: 366
Van Hoff Equation
So im studying for the test/final and i came upon a slight confusion. For the Hoff equation, I have two slightly different ones. One of which my TA provided for me and other is from the textbook. The textbook reads lnK2/k1=change in H/R(1/t1-1/t2) and the one my ta derived is lnk2/k1=change in H/R(1...
- Wed Mar 04, 2020 9:29 am
- Forum: Balancing Redox Reactions
- Topic: Balancing Redox reactions
- Replies: 4
- Views: 477
Re: Balancing Redox reactions
- Balance elements in the equation other than O and H. - Balance the oxygen atoms by adding the appropriate number of water (H2O) molecules to the opposite side of the equation. - Balance the hydrogen atoms (including those added in step 2 to balance the oxygen atom) by adding H+ ions to the opposit...
- Wed Mar 04, 2020 9:23 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Pt(s)
- Replies: 3
- Views: 333
Re: Pt(s)
"Pt is added to any side that lacks a solid conductor. Eg. if one half-reaction consists only of aqueous species, then that sides needs Pt(s) The half-reaction of I2(s) / I- (aq) requires Pt(s) because I2(s) is a non-conducting solid The exception to this rule is the mercury Hg(l) which can ser...
- Wed Mar 04, 2020 9:19 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: cell diagram order of phases
- Replies: 6
- Views: 464
Re: cell diagram order of phases
Elizabeth Bowen 1J wrote:Eunice Nguyen 4I wrote:I was always told to follow (s)|(g)|(aq)||(aq)|(g)|(s). Aqueous in the middle separated by two || (salt bridge), and the solids on the outside.
Does anyone know what we would do if there's a liquid?
Yea if someone could help answer this, it would be great
- Wed Mar 04, 2020 9:17 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Units for G°
- Replies: 6
- Views: 438
Re: Units for G°
i also think its joules per mole, but when doing the calculations you'll be able to confirm
- Wed Mar 04, 2020 9:12 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Equilibrium Constant K (Q) Units
- Replies: 3
- Views: 327
Re: Equilibrium Constant K (Q) Units
you can combine them because K is unit less
- Wed Mar 04, 2020 9:08 am
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Initial Rates summarized
- Replies: 3
- Views: 280
Re: Initial Rates summarized
The initial rate of a reaction is the instantaneous rate at the start of the reaction (when t = 0). The initial rate is equal to the negative of the slope of the curve of reactant concentration versus time at t = 0.; Measuring the initial rate of a reaction is important, because you know the concent...
- Wed Mar 04, 2020 9:06 am
- Forum: Balancing Redox Reactions
- Topic: Test 2- Electromotive Force?
- Replies: 1
- Views: 262
Re: Test 2- Electromotive Force?
The electromotive force is the total voltage induce by the source. In other words, it is the amount of energy supplied by the source to each coulomb of charge. It is measured in volts and represented by the symbol ε (epsilon). The emf is the maximum voltage that can be attained by the circuit.; The ...
- Wed Mar 04, 2020 9:04 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Ion-Selective Electrodes
- Replies: 1
- Views: 164
Re: Ion-Selective Electrodes
An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a transducer (or sensor) that converts the activity of a specific ion dissolved in a solution into an electrical potential. The voltage is theoretically dependent on the logarithm of the ionic activity, according to t...
- Wed Mar 04, 2020 9:00 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagram
- Replies: 3
- Views: 343
Re: Cell Diagram
Pt is added to any side that lacks a solid conductor.
- Wed Mar 04, 2020 8:59 am
- Forum: Balancing Redox Reactions
- Topic: Oxidation Number
- Replies: 2
- Views: 254
Re: Oxidation Number
The oxidation number of a free element is always 0. The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of O in compounds is usually -2, but it is -1 in peroxides...
- Wed Mar 04, 2020 8:58 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Reasonable values for K
- Replies: 7
- Views: 563
Re: Reasonable values for K
i think it would be between k>10^-3 and k<10^3 but idk exactly what you're asking.
- Wed Mar 04, 2020 8:55 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst Equation derivation
- Replies: 3
- Views: 331
Re: Nernst Equation derivation
The Nernst Equation is derived from the Gibbs free energy under standard conditions.
- Wed Mar 04, 2020 8:53 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Metal Dissolving in Solutions
- Replies: 1
- Views: 117
Re: Metal Dissolving in Solutions
A metal will dissolve in the solution if the standard cell potential of the redox reaction is positive, meaning the standard Gibbs free energy is negative because that would mean the reaction is spontaneous.
- Wed Mar 04, 2020 8:45 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst Equation Components
- Replies: 2
- Views: 214
Re: Nernst Equation Components
E = cell potential at standard-state conditions.
R = ideal gas constant = 8.314 J/mol-K.
T = temperature (kelvin), which is generally 25 C (298 K)
n = number of moles of electrons transferred in the balanced equation.
F = Faraday's constant, the charge on a mole of electrons = 95,484.56 C/mol.
R = ideal gas constant = 8.314 J/mol-K.
T = temperature (kelvin), which is generally 25 C (298 K)
n = number of moles of electrons transferred in the balanced equation.
F = Faraday's constant, the charge on a mole of electrons = 95,484.56 C/mol.
- Wed Mar 04, 2020 8:44 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: concentration cells
- Replies: 4
- Views: 307
Re: concentration cells
A concentration cell is a type of a galvanic cell where the same type of a solution is used for the two compartments (cathode and anode) with the only difference is the concentration.
- Sun Feb 09, 2020 7:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: memorizing things?
- Replies: 13
- Views: 644
Re: memorizing things?
you don't need to memorize any equations bc they're mainly given but how they are applied to the concept, you'll need to understand that
- Sun Feb 09, 2020 7:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: slides
- Replies: 8
- Views: 334
Re: slides
unfortunately, de does not post his slides, he does have equilibrium modules
- Mon Jan 27, 2020 8:37 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: enthalpy/state properties
- Replies: 4
- Views: 187
Re: enthalpy/state properties
enthalpy is a state function because it only depends on the initial and final conditions, and not on the path taken to establish these conditions
- Mon Jan 27, 2020 8:34 am
- Forum: Phase Changes & Related Calculations
- Topic: State functions
- Replies: 5
- Views: 263
Re: State functions
enthalpy is a state function because it only depends on the initial and final conditions, and not on the path taken to establish these conditions
- Mon Jan 27, 2020 8:26 am
- Forum: General Science Questions
- Topic: Fall 2019 final
- Replies: 7
- Views: 234
Re: Fall 2019 final
i think you can pick them up anytime this week from 9-5 pm and they're closed for lunch from 12-1pm
- Mon Jan 27, 2020 8:24 am
- Forum: Administrative Questions and Class Announcements
- Topic: homework for week 4
- Replies: 11
- Views: 431
Re: homework for week 4
yes, hw from the thermochemistry outline should be fine
- Mon Jan 27, 2020 8:24 am
- Forum: Administrative Questions and Class Announcements
- Topic: Grading of Tests
- Replies: 18
- Views: 771
Re: Grading of Tests
in 14a we would get some partial credit, but it depends on your grader
- Thu Jan 23, 2020 9:23 am
- Forum: Administrative Questions and Class Announcements
- Topic: Best Way To Study?
- Replies: 13
- Views: 652
Re: Best Way To Study?
the best way to study i have found is to do all the hw problems and to go over the learning objectives. Also, go through your notes, but definitely apply the concepts to problems.
- Thu Jan 23, 2020 9:21 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: H20 in the ICE table
- Replies: 26
- Views: 1513
Re: H20 in the ICE table
yes you don't include water but also don't include other liquids and solids, just gases.
- Thu Jan 23, 2020 9:20 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5% rule
- Replies: 13
- Views: 643
Re: 5% rule
this rule is used to calculate how accurate your approximation for x is. if it is less than 5% you're good
- Thu Jan 23, 2020 9:19 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: X was ignored
- Replies: 27
- Views: 1155
Re: X was ignored
you can ignore x when making an approximation. this can be done when Kb or Ka is less than 10^-3
- Thu Jan 23, 2020 9:18 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Prep for Test 1
- Replies: 16
- Views: 683
Re: Prep for Test 1
the values will be given, we just need to know how to interpret and apply
- Mon Jan 13, 2020 4:58 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: volume change with inert gas
- Replies: 9
- Views: 258
Re: volume change with inert gas
the reaction does not shift (concentration does not change) with an inert gas because in order to do so we would need volume to change.
- Mon Jan 13, 2020 4:56 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: PV=nRT
- Replies: 9
- Views: 414
Re: PV=nRT
this is the ideal gas law and you can use it to convert between partial pressure and concentration. concentration=P/RT
- Mon Jan 13, 2020 4:54 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: What is this?
- Replies: 23
- Views: 1484
Re: What is this?
in basic terms, le chanteliers principle just demonstrates how a system will always reach stability but more complex "Le Chatelier's principle can be used to predict the behavior of a system due to changes in pressure, temperature, or concentration. Le Chatelier's principle implies that the add...
- Mon Jan 13, 2020 4:51 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 14A Final Pickup
- Replies: 5
- Views: 234
Re: 14A Final Pickup
you can pick them up week 3 from 3034 Young Hall
- Mon Jan 13, 2020 4:51 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 14A Final Pickup
- Replies: 5
- Views: 234
Re: 14A Final Pickup
you can pick them up week 3 from 3034 Young Hall
- Mon Jan 13, 2020 4:50 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Are Lectures Bruincasted?
- Replies: 10
- Views: 395
Re: Are Lectures Bruincasted?
I also have this question, so I'm just dropping a comment to be able to access it once someone replies
- Sun Jan 12, 2020 2:54 pm
- Forum: Ideal Gases
- Topic: R in PV=nRT
- Replies: 34
- Views: 6710
Re: R in PV=nRT
R is the gas constant and it equals 8.314 J / mol·K.
- Sun Jan 12, 2020 2:53 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 1
- Replies: 2
- Views: 165
Re: Test 1
I think Test 1 is only on outline 1 which would be chemical equilibrium but he'll probably clarify this by the end of this week
- Sun Jan 12, 2020 2:50 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: when to use Kc vs Kp
- Replies: 11
- Views: 459
Re: when to use Kc vs Kp
we use Kc or Kp according to the the information we are given and the values we are looking for. for example we would use Kp when atm is used and Kc when moles/liter are used
- Sun Jan 12, 2020 2:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: General HW question
- Replies: 9
- Views: 412
Re: General HW question
i think this might depend on your ta, but for some, it mostly based on completeness of the 5 problems.
- Sun Jan 12, 2020 2:48 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: x is small approximation
- Replies: 6
- Views: 548
Re: x is small approximation
according to the video module, we can assume K is small when it is approximate 10^-4 or smaller
- Sun Jan 12, 2020 2:47 pm
- Forum: Administrative Questions and Class Announcements
- Topic: HW 2
- Replies: 7
- Views: 264
Re: HW 2
Yes, he said week 1 that we can still turn in equilibrium hw problems for week 2 hw.
- Mon Dec 02, 2019 9:44 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Today's lecture
- Replies: 5
- Views: 379
Today's lecture
Hi, I was unable to make it to lecture, can someone let me know what Lavelle went over please and thank you!
- Mon Dec 02, 2019 9:41 pm
- Forum: Student Social/Study Group
- Topic: Practice Final
- Replies: 17
- Views: 1411
Re: Practice Final
I'm not sure if he will, but I know Friday 7:30-10 there will be a review session which will cover everything
- Mon Dec 02, 2019 9:39 pm
- Forum: Bronsted Acids & Bases
- Topic: stronger acid ?
- Replies: 8
- Views: 440
Re: stronger acid ?
In both acid the oxidation number of chlorine and bromine are same ,that is +3 . But chlorine atom is more electronegative than bromine atom . So the electron of O - H bond strongly attract Cl atom towards itself than bromine atom . ... Consequently , HClO2 is more stroger acid than HBrO2
- Mon Dec 02, 2019 9:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Grades
- Replies: 15
- Views: 1068
Re: Grades
yes, to receive a C- we just need a total of 250 points
- Mon Dec 02, 2019 9:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam Location
- Replies: 11
- Views: 765
Re: Final Exam Location
You will go according to your last name but we'll probably receive an email with a confirmation
- Sun Dec 01, 2019 11:00 pm
- Forum: General Science Questions
- Topic: Review Sessions for Final
- Replies: 7
- Views: 604
Re: Review Sessions for Final
I just checked chemistry community but they are not up yet, he said they ould be up very soon. I believe the first one begins on Tuesday
- Sun Dec 01, 2019 10:57 pm
- Forum: General Science Questions
- Topic: test taking nervousness
- Replies: 19
- Views: 1098
Re: test taking nervousness
This also happen to me a lot. I usually sit and take a deep breathe and really tell myself that I know what I'm doing. By giving myself reassurance I'm able to more easily focus on the problems
- Sun Dec 01, 2019 10:54 pm
- Forum: General Science Questions
- Topic: Friday Lecture Week 10
- Replies: 3
- Views: 309
Re: Friday Lecture Week 10
I would say that Friday will be review
- Sun Dec 01, 2019 10:53 pm
- Forum: Bronsted Acids & Bases
- Topic: How to determine if a molecule is a bronsted acid or base?
- Replies: 3
- Views: 296
Re: How to determine if a molecule is a bronsted acid or base?
To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrog...
- Sun Dec 01, 2019 10:52 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma vs. Pi
- Replies: 20
- Views: 1298
Re: Sigma vs. Pi
sigma bonds will be stronger since its an overlap
- Sun Nov 24, 2019 10:10 pm
- Forum: Biological Examples
- Topic: Cisplatin
- Replies: 8
- Views: 531
Re: Cisplatin
I got this online and hope it answers your question. "Cisplatin molecules are known to be attacked by water molecules before they react with DNA. ... 3) When cis-form of (NH3)2 Pt 2+ reacts with two Guanines in DNA, the two N atoms in Guanines can readily bind to the Pt atom in cisplatin. The t...
- Sun Nov 24, 2019 10:07 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Chelating complexes
- Replies: 1
- Views: 184
Re: Chelating complexes
I got this from online and thought it was a good explanation. "A chelate is a chemical compound composed of a metal ion and a chelating agent. A chelating agent is a substance whose molecules can form several bonds to a single metal ion. In other words, a chelating agent is a multidentate ligan...
- Sun Nov 24, 2019 10:05 pm
- Forum: Naming
- Topic: Trans and Cis
- Replies: 8
- Views: 506
Re: Trans and Cis
yes, and it would by looking at where the isomer is. the isomer where the two methyl groups are on the same side of the double bond is called “cis”, and the isomer where the two methyl groups are on the opposite side is called “trans”.
- Sun Nov 24, 2019 10:03 pm
- Forum: General Science Questions
- Topic: Week 9 HW
- Replies: 6
- Views: 476
Re: Week 9 HW
I would do week 9 based on hybridization and prolly the coordination and compound one
- Sun Nov 24, 2019 10:00 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Hybridization
- Replies: 7
- Views: 460
Re: Hybridization
Hybridization is based on the mixing of orbitals of the atom(any) to give hybrid orbitals. Hybrid orbitals can overlap with the hybrid/pure orbitals of other atoms to give sigma bonds
- Sun Nov 17, 2019 11:02 pm
- Forum: Student Social/Study Group
- Topic: Test 2
- Replies: 11
- Views: 556
Re: Test 2
you should focus on intermolecular forces, vsper model, hydrogen bonding dipoles and whatever he'll add Monday
- Sun Nov 17, 2019 10:59 pm
- Forum: Administrative Questions and Class Announcements
- Topic: test 2
- Replies: 7
- Views: 398
Re: test 2
I go over one for a while and then do something random and then go back and see if I can remember without looking at something
- Sun Nov 17, 2019 10:58 pm
- Forum: Student Social/Study Group
- Topic: Class Grading
- Replies: 44
- Views: 3760
Re: Class Grading
it's not on a curve but if in total points you accumulate 250 points or more then you have a passing grade
- Sun Nov 17, 2019 10:56 pm
- Forum: Student Social/Study Group
- Topic: What will Test 2 be on?
- Replies: 8
- Views: 582
Re: What will Test 2 be on?
you should focus on intermolecular forces, vsper model, hydrogen bonding dipoles and whatever he'll add Monday
- Sun Nov 17, 2019 10:54 pm
- Forum: Ionic & Covalent Bonds
- Topic: 2D 3.
- Replies: 1
- Views: 148
Re: 2D 3.
you would know this because the electronegativity difference is greater than Ba and Br than between B and Be and Br making the Ba-Br bond more ionic
- Sun Nov 03, 2019 11:13 pm
- Forum: Resonance Structures
- Topic: 2B.15
- Replies: 2
- Views: 155
Re: 2B.15
so you would draw the structure with n in the center and surround with 2 o's and one cl and one o will have two bonds and the other two just one bond with N
- Sun Nov 03, 2019 11:10 pm
- Forum: General Science Questions
- Topic: Study Tactics
- Replies: 5
- Views: 220
Re: Study Tactics
I feel like focus more of your time on quantum
- Sun Nov 03, 2019 11:08 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Showing Work
- Replies: 6
- Views: 306
Re: Showing Work
my ta said that if you just write the answer then thats fine but they give partial points so if you don't know something you can write random equations to get some credit
- Sun Nov 03, 2019 11:07 pm
- Forum: Octet Exceptions
- Topic: Octet Exceptions
- Replies: 7
- Views: 431
Re: Octet Exceptions
the octet rule is strictly followed by B row and as you go down not that much, an example would be PBr5
- Sun Nov 03, 2019 11:05 pm
- Forum: Resonance Structures
- Topic: Drawing Resonance Structures
- Replies: 2
- Views: 146
Re: Drawing Resonance Structures
yea, i think you'll just have to draw one with the correct charge since you can rotate the bonds
- Tue Oct 29, 2019 7:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm
- Replies: 7
- Views: 456
Midterm
Can someone confirm that the midterm is Nov 6 and what time and place is takes? Or where can I access this information
- Sun Oct 20, 2019 11:14 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Advice for studying
- Replies: 92
- Views: 7661
Re: Advice for studying
I've also been struggling a lot with keeping up with the material, so if anyone wants to study together and prepare lemme know but I think something that is definitely important is to prepare before the week starts
- Sun Oct 20, 2019 11:12 pm
- Forum: Properties of Light
- Topic: What are the units of hertz
- Replies: 41
- Views: 2145
Re: What are the units of hertz
The units for hertz is one cycle per second
- Sun Oct 20, 2019 11:11 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: 1F.3
- Replies: 2
- Views: 135
Re: 1F.3
p^3->s^2->cl^-
- Sun Oct 20, 2019 11:07 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 1E.17
- Replies: 2
- Views: 209
Re: 1E.17
a)4p
b)4s
c)6s
b)4s
c)6s
- Mon Oct 14, 2019 4:44 pm
- Forum: *Shrodinger Equation
- Topic: psi vs psi^2
- Replies: 7
- Views: 421
psi vs psi^2
Hi can someone further explain the difference between psi and psi^2?
- Sun Oct 13, 2019 10:53 pm
- Forum: Properties of Light
- Topic: 1A.3
- Replies: 2
- Views: 83
Re: 1A.3
so C would be interpreted as the following
because the electrical field corresponds to the amplitude; and so as the frequency decreases the waves broaden and the extent of the change decreases.
because the electrical field corresponds to the amplitude; and so as the frequency decreases the waves broaden and the extent of the change decreases.
- Sun Oct 13, 2019 10:47 pm
- Forum: Properties of Light
- Topic: 1A.3
- Replies: 1
- Views: 88
Re: 1A.3
C is correct because the electrical field corresponds to the amplitude; and so as the frequency decreases the waves broaden and the extent of the change decreases.
- Sun Oct 13, 2019 10:45 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: #1D.21
- Replies: 2
- Views: 105
Re: #1D.21
a) 5d, five
b)1s, one
c) 6f, seven
d) 2p, three
b)1s, one
c) 6f, seven
d) 2p, three
- Sun Oct 13, 2019 10:42 pm
- Forum: Properties of Light
- Topic: Balmer vs. Lyman Lines (1A.11)
- Replies: 3
- Views: 211
Re: Balmer vs. Lyman Lines (1A.11)
In each of these series, the principal quantum number for the lower energy number involved is the same for each absorption line. Thus, for the Lyman series, the lower energy level is n=1; for the Balmer series n=2 for Paschen series n=3 and for the Brackett series n=4.
- Sun Oct 13, 2019 10:38 pm
- Forum: Properties of Light
- Topic: Combining Different Equations
- Replies: 8
- Views: 280
Re: Combining Different Equations
We are allowed to combine equations when they are equal to each other. For example x=2 for x+2=? it would be 2+2=4 because we substitute the variable for the known. This also happens for the equation you listed. Hopefully, this is what you are referring to
- Sun Oct 06, 2019 9:54 pm
- Forum: Student Social/Study Group
- Topic: Final Jitters
- Replies: 457
- Views: 376889
Re: Final Jitters
Usually to calm myself, I like to do something that is fun for me. Either that be I watch a show or go to the gym just to get a breather and forget about all the anxieties. Goodluck
- Sun Oct 06, 2019 9:52 pm
- Forum: General Science Questions
- Topic: Periodic Table
- Replies: 5
- Views: 324
Re: Periodic Table
I might be completely wrong so anyone correct me if I'm wrong but it might be the number of isotopes that exists?
- Sun Oct 06, 2019 9:52 pm
- Forum: General Science Questions
- Topic: Periodic Table
- Replies: 5
- Views: 324
Re: Periodic Table
I might be completely wrong so anyone correct me if I'm wrong but it might be the number of isotopes that exists?
- Sun Oct 06, 2019 9:47 pm
- Forum: Properties of Light
- Topic: Question 1A.3
- Replies: 1
- Views: 122
Re: Question 1A.3
I'm not sure if I misinterpreted your post but for your explanation it would be that as frequency decreases then the waves broaden and the extent of the change decreases. This is because electric field corresponds to the amplitude
- Sun Oct 06, 2019 9:40 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: G7
- Replies: 2
- Views: 218
Re: G7
Yes so afterwards what you would do is find the mass of water by subtracting 510g-27.8g= 482.2G H2O
and the way to describe it would be that you measure 482g H2O on a balance and then pour it in a beaker. Then you weigh 27.8g of KNO3 and mix it with water until it dissolves.
and the way to describe it would be that you measure 482g H2O on a balance and then pour it in a beaker. Then you weigh 27.8g of KNO3 and mix it with water until it dissolves.
- Sun Oct 06, 2019 4:49 pm
- Forum: SI Units, Unit Conversions
- Topic: 50 Min test
- Replies: 4
- Views: 164
50 Min test
I'm barley learning how to navigate Chemistry community so sorry if this post is not in the correct place buy anyways..
For the 50 min test will it take place during class (if so when) or during our discussion section??
For the 50 min test will it take place during class (if so when) or during our discussion section??