Search found 96 matches
- Fri Mar 12, 2021 1:50 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Rate Laws for Slow Step/Overall
- Replies: 14
- Views: 978
Re: Rate Laws for Slow Step/Overall
intermediates are not included in the overall reaction
- Fri Mar 12, 2021 1:49 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Stopped Flow Technique
- Replies: 1
- Views: 168
Re: Stopped Flow Technique
i believe the stopped flow technique is used when there is a tiny amount of reactant used. it allows you to find the rate of a reaction in milliseconds with small amounts of reactants. However, I'm not 100% sure why this is related to the zero-order reaction.
- Fri Mar 12, 2021 1:46 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: K value
- Replies: 20
- Views: 892
Re: K value
the k value is always positive!
- Fri Mar 12, 2021 1:44 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Catalyst
- Replies: 30
- Views: 2197
Re: Catalyst
catalysts do not appear in the overall reactions. think about it as something that is not a part of the chemical reaction but is just used to speed up the reaction.
- Fri Mar 12, 2021 1:42 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: k'
- Replies: 17
- Views: 890
Re: k'
it doesn't have anything to do with derivatives! I thought that in the beginning too.
- Fri Mar 12, 2021 1:40 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Zero Order rate law
- Replies: 2
- Views: 181
Re: Zero Order rate law
the zero order rate law is independent of the reaction concentration.
- Fri Mar 12, 2021 1:38 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Molecularlity
- Replies: 4
- Views: 308
Re: Molecularlity
water is not included so i don't think it would even appear in the rate law! I say don't worry too much about it.
- Sun Mar 07, 2021 7:50 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Activation Energy
- Replies: 17
- Views: 1011
Re: Activation Energy
They would not be able to replace each other.
- Sun Mar 07, 2021 7:44 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Units for reaction rates
- Replies: 15
- Views: 1149
Re: Units for reaction rates
Namita Shyam 3G wrote:Is knowing the units important for the exam? Will we need to memorize this?
Units are always good to memorize for the exam! maybe it will help you to match different diagrams to the right order?
- Sun Mar 07, 2021 7:41 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: average rate
- Replies: 11
- Views: 662
Re: average rate
i believe the average rate of change in reactants is always negative to indicate how the concentration is decreasing as it's changing.
- Sun Mar 07, 2021 7:39 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Gibbs Energy
- Replies: 20
- Views: 1174
Re: Gibbs Energy
in terms of thermodynamics, gibbs free energy is used to calculate work performed in a thermodynamic system under a constant pressure and constant temperature!
- Sun Mar 07, 2021 7:30 pm
- Forum: First Order Reactions
- Topic: 1st Order Reactions
- Replies: 29
- Views: 2016
Re: 1st Order Reactions
a first order graph has a -k slope!
- Sun Mar 07, 2021 7:27 pm
- Forum: First Order Reactions
- Topic: Order Graphs
- Replies: 8
- Views: 491
Re: Order Graphs
you would have to know which graphs would relate to which order! I suggest you just familiarize yourself with which graph represents which order and you should be good for the final.
- Sun Mar 07, 2021 7:26 pm
- Forum: First Order Reactions
- Topic: Graphing
- Replies: 20
- Views: 1040
Re: Graphing
We should familiarize ourselves with the graph but I don't think we would be required to graph in the final since it is multiple choice!
- Sun Mar 07, 2021 7:25 pm
- Forum: First Order Reactions
- Topic: Slope
- Replies: 24
- Views: 972
Re: Slope
the slope is -k for first order reactions and also zero order reactions,
- Thu Feb 25, 2021 7:17 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: dilutions and Ecell
- Replies: 16
- Views: 3430
Re: dilutions and Ecell
dilution usually decreases all of the cell potential :)
- Thu Feb 25, 2021 7:15 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: G from K
- Replies: 9
- Views: 527
Re: G from K
When K < 1, the reaction is not spontaneous, which makes delta G >0, but when K >1, the reaction is spontaneous which means delta G is less than zero
- Thu Feb 25, 2021 7:13 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: n in NFE
- Replies: 64
- Views: 4272
Re: n in NFE
n is the number of electrons that are transferred for that specific question.
- Thu Feb 25, 2021 7:12 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Units for delta G
- Replies: 31
- Views: 2089
Re: Units for delta G
The units for delta G are almost always kj
- Thu Feb 25, 2021 7:11 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Battery
- Replies: 19
- Views: 2431
Re: Battery
yes you are correct! a dead battery implies a E of 0 which also means that the delta G is zero
- Thu Feb 25, 2021 6:47 pm
- Forum: Balancing Redox Reactions
- Topic: coefficients for oxidation number
- Replies: 22
- Views: 5053
Re: coefficients for oxidation number
You don't have to worry about the coefficients! They aren't used in the calculations
- Thu Feb 25, 2021 6:45 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Oxidation Agent
- Replies: 12
- Views: 619
Re: Oxidation Agent
if you break the reaction down, we can see that the the substances that loses electrons is the one being oxidized and that is the reducing agent!
- Thu Feb 25, 2021 6:42 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Eºcell
- Replies: 11
- Views: 711
Re: Eºcell
Yes! you are correct :). When E cells are positive, the reaction is spontaneous.
- Thu Feb 25, 2021 6:41 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Salt Bridge
- Replies: 30
- Views: 1494
Re: Salt Bridge
a salt bridge was used to connect to oxidation and reduction half-cells of a voltaic cell! it helps maintain neutrality with electricity.
- Thu Feb 25, 2021 6:39 pm
- Forum: Balancing Redox Reactions
- Topic: Balancing OH- and H2O
- Replies: 4
- Views: 246
Re: Balancing OH- and H2O
so the second part of the sentence is just offering an another method to balance the equation!
- Sun Feb 07, 2021 11:35 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Delta U
- Replies: 6
- Views: 317
Re: Delta U
Internal energy is the energy associated with the random motion of molecules within the system!
- Sun Feb 07, 2021 11:33 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: When work and heat should be positive/negative
- Replies: 6
- Views: 2242
Re: When work and heat should be positive/negative
heat = negative when the system is doing work and you are losing heat!
- Sun Feb 07, 2021 11:31 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Using R in thermodynamic equations
- Replies: 24
- Views: 1140
Re: Using R in thermodynamic equations
try to identify the units first when deciding which R to use. All the units are provided on the equations sheet so I wouldn't worry too much about memorizing them! As I solved more problems I realized I could figure out which R to use by the equation I am using and what answer I need to provide.
- Sun Feb 07, 2021 11:28 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: delta U= delta H
- Replies: 21
- Views: 1627
Re: delta U= delta H
This means that when there is constant pressure AND constant volume, delta H (enthalpy) equals delta U
- Sun Feb 07, 2021 11:27 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Cp and Cv
- Replies: 7
- Views: 459
Re: Cp and Cv
I saw this on a saplings hint and I was lost too! but I did some research and found that Cp-Cv=R!. I'm not sure if it'll come up later but Cp/Cv ratio is also called the heat capacity ratio.
- Sun Feb 07, 2021 11:24 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: types of gas
- Replies: 9
- Views: 372
Re: types of gas
you would have to draw out the Lewis structure and see if they are linear or not. Atom is pretty self-explanatory.
- Sun Feb 07, 2021 11:23 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Delta U in relation to q
- Replies: 5
- Views: 258
Re: Delta U in relation to q
Delta U or E is equal to q only when work =0 but I believe the common instance we see delta U equal q is when there is constant volume. I wouldn't worry about it too much.
- Sun Feb 07, 2021 6:31 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: deltaU
- Replies: 29
- Views: 982
Re: deltaU
Delta U is the change in internal energy of a system. it's equal to the net heat transferred in and out of the system .
- Sun Feb 07, 2021 6:29 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Spontaneous processes
- Replies: 7
- Views: 224
Re: Spontaneous processes
The second law of thermodynamics states that entropy always increases for a spontaneous process. I'm not exactly sure why but I believe it's because heat flowing into a surrounding would cause the motion of the molecules to increase? this would eventually increase entropy.
- Sun Feb 07, 2021 6:24 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Systems
- Replies: 24
- Views: 997
Re: Systems
The universe is said to be an isolated system! I believe Professor Lavelle mentioned it briefly during lecture.
- Sun Feb 07, 2021 6:22 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: enthalpy and heat
- Replies: 10
- Views: 458
Re: enthalpy and heat
Q refers to the energy transfer due to thermal reactions and enthalpy is the total heat content. They are not exchangeable.
- Sun Feb 07, 2021 6:20 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Calorimeters
- Replies: 10
- Views: 478
Re: Calorimeters
So calorimeters are used to measure the heat capacity of materials and this is measured by trapping the heat released from a chemical reaction.
- Sun Jan 24, 2021 10:58 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Ice Tables
- Replies: 28
- Views: 1203
Re: Ice Tables
you use -x when the reaction is going towards the products and you use +x when the reaction is going towards the reactants
- Sun Jan 24, 2021 10:56 pm
- Forum: Ideal Gases
- Topic: Acids and Bases
- Replies: 7
- Views: 359
Acids and Bases
Do we have a section for acids and bases?
- Sun Jan 24, 2021 10:55 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: H2O as a Gas
- Replies: 69
- Views: 7315
Re: H2O as a Gas
when forming the ICE table it's important to remember that we don't include anything in the solid and liquid form! we definitely include it when it's a gas or aqueous. So for H2O, we would include it if it was a gas!
- Sun Jan 24, 2021 10:54 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: When to use ICE box
- Replies: 23
- Views: 1013
Re: When to use ICE box
We use ICE boxes when we have an unknown concentration!
- Wed Jan 20, 2021 7:58 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Q and K
- Replies: 46
- Views: 1947
Re: Q and K
You are correct! K is found at equilibrium and Q is found at any time of the reaction!
- Wed Jan 20, 2021 7:56 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Total Pressure
- Replies: 26
- Views: 2164
Re: Total Pressure
the total pressure of a reaction is the sum of all the partial pressures in a reaction.
- Wed Jan 20, 2021 7:54 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Temperature
- Replies: 45
- Views: 1560
Re: Temperature
if the reaction is endothermic it will favor the product formation and if the reaction is exothermic the reaction will favor the reactant formation.
- Wed Jan 20, 2021 7:51 pm
- Forum: Ideal Gases
- Topic: Inverse Kc [ENDORSED]
- Replies: 41
- Views: 2486
Re: Inverse Kc [ENDORSED]
The inverse Kc is for the inverse reaction ! :)
- Wed Jan 20, 2021 7:45 pm
- Forum: Ideal Gases
- Topic: Omitting solid/liquid
- Replies: 19
- Views: 810
Re: Omitting solid/liquid
the concentration of solids and liquids do not change! so when we calculate concentration they're omitted!
- Tue Jan 12, 2021 12:10 am
- Forum: Ideal Gases
- Topic: Units for Pressure
- Replies: 41
- Views: 2734
Re: Units for Pressure
Dr. Lavelle said that bar is technically the correct unit but since atm is so close to bar you can use atm!
- Tue Jan 12, 2021 12:09 am
- Forum: Ideal Gases
- Topic: PV=nRT
- Replies: 74
- Views: 5162
Re: PV=nRT
P: pressure
V: volume
n: moles
R: constant
T: temperature
V: volume
n: moles
R: constant
T: temperature
- Tue Jan 12, 2021 12:06 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kc vs Kp
- Replies: 6
- Views: 156
Re: Kc vs Kp
you could yes.
- Tue Jan 12, 2021 12:05 am
- Forum: Ideal Gases
- Topic: Gas constant R
- Replies: 26
- Views: 1372
Re: Gas constant R
The Gas constant R is always given on the equations sheet and is constant so dw about memorizing it.
- Tue Jan 12, 2021 12:03 am
- Forum: Ideal Gases
- Topic: Units of Temperature
- Replies: 82
- Views: 4374
Re: Units of Temperature
It would be Kelvin! Dr. Lavelle mentioned it during class.
- Fri Nov 29, 2019 9:28 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Explain VSEPR conceptually
- Replies: 12
- Views: 853
Re: Explain VSEPR conceptually
VESPR model is what we name all the models that are in 3D, gives us a more in-depth look at how the molecule is arranged in real life.
- Fri Nov 29, 2019 9:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent Shape
- Replies: 31
- Views: 3052
Re: Bent Shape
a bent shape can have either one or two lone pairs
- Fri Nov 29, 2019 9:26 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: T-Shape
- Replies: 5
- Views: 443
Re: T-Shape
in the VSEPR model, you can see that it is not the same.
- Fri Nov 29, 2019 9:26 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular shape of carbon Dioxide
- Replies: 10
- Views: 655
Re: Molecular shape of carbon Dioxide
it would be linear
- Fri Nov 29, 2019 9:25 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Seesaw Shape
- Replies: 12
- Views: 674
Re: Seesaw Shape
<90 and <120
- Fri Nov 29, 2019 9:23 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 2
- Replies: 6
- Views: 523
Re: Test 2
you will probably get your score in discussion
- Fri Nov 29, 2019 9:22 pm
- Forum: Hybridization
- Topic: Overlapping of Orbitals
- Replies: 2
- Views: 243
Re: Overlapping of Orbitals
overlapping of bonds equal double and triple bonds.
- Fri Nov 29, 2019 9:21 pm
- Forum: Hybridization
- Topic: Bond angles
- Replies: 2
- Views: 304
Re: Bond angles
the reason why these bond angels are less comes from the lone pairs that are pressing the angles down. the only way it would be greater is possibly from removing those lone pairs maybe?
- Fri Nov 29, 2019 9:18 pm
- Forum: Hybridization
- Topic: Hybridization for elements like S, Xe, Br, etc.
- Replies: 4
- Views: 376
Re: Hybridization for elements like S, Xe, Br, etc.
hybridization should be the same for every element.
- Fri Nov 29, 2019 9:17 pm
- Forum: Hybridization
- Topic: double bonds
- Replies: 7
- Views: 475
Re: double bonds
a double bond would be a sigma and pi bond
- Fri Nov 29, 2019 9:16 pm
- Forum: Hybridization
- Topic: sigma or pi?
- Replies: 20
- Views: 1198
Re: sigma or pi?
you count the number of bonds there are. for example, a single bond is a sigma bond, a double bond is sigma and pi, and a triple bond is sigma and two pi.
- Fri Nov 29, 2019 9:15 pm
- Forum: Hybridization
- Topic: Reason for 1 sigma and multiple pi bonds
- Replies: 3
- Views: 283
Re: Reason for 1 sigma and multiple pi bonds
when you have double and triple bonds, the orbitals are overlapping side by side and this side by side overlap is called pi bonds. Everything overlapping is called pi bonds so the ones that are no overlapping, which only happens once is called sigma bonds.
- Fri Nov 29, 2019 9:14 pm
- Forum: Hybridization
- Topic: Sigma and Pi bonds
- Replies: 7
- Views: 527
Re: Sigma and Pi bonds
so the single bonds are sigma bonds, the double bonds are sigma bonds and pi bonds, and triple bonds are one sigma bonds and two pi bonds
- Fri Nov 15, 2019 9:11 am
- Forum: Lewis Structures
- Topic: Does the shape that I draw the Lewis structure matter?
- Replies: 14
- Views: 1038
Re: Does the shape that I draw the Lewis structure matter?
not yet, but later yes.
- Fri Nov 15, 2019 9:10 am
- Forum: Lewis Structures
- Topic: Xenon
- Replies: 4
- Views: 783
Re: Xenon
Xenon has an empty d orbital which allows it to have extended electrons.
- Fri Nov 15, 2019 9:10 am
- Forum: Lewis Structures
- Topic: Oxygen
- Replies: 9
- Views: 784
Re: Oxygen
where did you learn that oxygen can only have double bonds
- Fri Nov 15, 2019 9:09 am
- Forum: Lewis Structures
- Topic: Polar and Non polar covalent bonds in lewis structures
- Replies: 5
- Views: 360
Re: Polar and Non polar covalent bonds in lewis structures
defining them is not very necessary but knowing what it means should be helpful.
- Fri Nov 15, 2019 9:08 am
- Forum: Lewis Structures
- Topic: Ground-State Electron Configuration
- Replies: 5
- Views: 366
Re: Ground-State Electron Configuration
they're the same
- Fri Nov 15, 2019 9:08 am
- Forum: Lewis Structures
- Topic: Biradical
- Replies: 2
- Views: 239
Re: Biradical
a biradical is an even compound with two radical centers; however, we didn't really talk about it in class so we shouldn't have to know much about it.
- Fri Nov 15, 2019 9:06 am
- Forum: Lewis Structures
- Topic: Expanded Octet
- Replies: 10
- Views: 540
Re: Expanded Octet
elements beyond the 3rd period have extra room to take the extra electrons in! which allows it to be expanded
- Fri Nov 15, 2019 9:04 am
- Forum: Lewis Structures
- Topic: Lewis Dot Structures
- Replies: 7
- Views: 414
Re: Lewis Dot Structures
at the point where we are at the lecture, no
- Fri Nov 15, 2019 9:03 am
- Forum: Lewis Structures
- Topic: Bonds
- Replies: 4
- Views: 211
Re: Bonds
the strength and length changes when it is a double or triple bond so when you use it you should think about it
- Fri Nov 15, 2019 9:02 am
- Forum: Lewis Structures
- Topic: Center of a Lewis Structure
- Replies: 7
- Views: 543
Re: Center of a Lewis Structure
yes, lavelle specified in class that the atom with the lowest ionization energy should be at the center
- Fri Nov 15, 2019 9:02 am
- Forum: Lewis Structures
- Topic: Lewis Structure
- Replies: 6
- Views: 452
Re: Lewis Structure
calculate formal charge
- Fri Nov 15, 2019 8:59 am
- Forum: General Science Questions
- Topic: Test 2
- Replies: 20
- Views: 869
Re: Test 2
everything after the midterm is covered!
- Mon Oct 21, 2019 4:39 pm
- Forum: Properties of Light
- Topic: Homework due Next Week
- Replies: 9
- Views: 373
Re: Homework due Next Week
as long as the topic is still on the topic discussed we should be turning in homework according to it,
- Mon Oct 21, 2019 4:38 pm
- Forum: Properties of Light
- Topic: Speed of light
- Replies: 13
- Views: 383
Re: Speed of light
EMR is the speed of light so we typically use it
- Mon Oct 21, 2019 4:36 pm
- Forum: SI Units, Unit Conversions
- Topic: Unit conversion
- Replies: 15
- Views: 1593
Re: Unit conversion
you use conversion factors!
- Mon Oct 21, 2019 4:35 pm
- Forum: SI Units, Unit Conversions
- Topic: Calculate using kg or g?
- Replies: 13
- Views: 910
Re: Calculate using kg or g?
you can't go wrong with always answer using grams and converting early on wouldn't hurt.
- Mon Oct 21, 2019 4:35 pm
- Forum: SI Units, Unit Conversions
- Topic: Additional Practice
- Replies: 2
- Views: 222
Re: Additional Practice
for review I don't know if you took AP Chem or not but my AP chem review books gave me a lot of review questions.
- Tue Oct 15, 2019 7:26 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Do we have discussion on the day of the midterm?
- Replies: 2
- Views: 281
- Tue Oct 15, 2019 7:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 1 Solutions
- Replies: 4
- Views: 531
Re: Test 1 Solutions
I heard most of the test questions are similar to the ones in the homework so if you find the topic and compare solutions it'll be easy to figure out how to solve the problem! if not, going to office hours won't hurt.
- Tue Oct 15, 2019 7:24 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Discussion about Test questions
- Replies: 5
- Views: 671
Re: Discussion about Test questions
Everyone is getting their tests back in their discussions this week so it should be okay to talk about them freely
- Tue Oct 15, 2019 7:22 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Deadline to post
- Replies: 7
- Views: 816
Re: Deadline to post
it's 5 posts every week and the week ends with sunday night.
- Tue Oct 15, 2019 7:21 pm
- Forum: Administrative Questions and Class Announcements
- Topic: How to find my posts
- Replies: 163
- Views: 175858
Re: How to find my posts
click on your own username and you should be able to find all your responses and new topics
- Tue Oct 15, 2019 7:21 pm
- Forum: Properties of Light
- Topic: Quantum Topic Homework
- Replies: 1
- Views: 109
Quantum Topic Homework
If we are not done with Quantum Topic 1 by the end of week three, do we just keep turning in questions from that section? just new problems?
- Tue Oct 15, 2019 7:19 pm
- Forum: Properties of Light
- Topic: Next test
- Replies: 23
- Views: 1117
Re: Next test
TA said we will be getting the equation sheet we got for every test.
- Tue Oct 15, 2019 7:18 pm
- Forum: Properties of Light
- Topic: 1A.15
- Replies: 4
- Views: 369
1A.15
Im not entirely sure what the R means in the equation. It throws me off
- Tue Oct 15, 2019 7:15 pm
- Forum: Properties of Light
- Topic: Variables and what they mean
- Replies: 9
- Views: 526
Re: Variables and what they mean
lamda is the upside down v with a little edge at the top and it symbolizes wavelength and the v is frequency
- Tue Oct 15, 2019 7:13 pm
- Forum: Properties of Light
- Topic: Homework
- Replies: 11
- Views: 546
Re: Homework
i personally did the first 5 questions that were on the homework list and I got full credit
- Sun Oct 06, 2019 11:11 pm
- Forum: Significant Figures
- Topic: Clarification with sig figs
- Replies: 6
- Views: 234
Re: Clarification with sig figs
if you round throughout the problem there's a chance that your measurements will be off and the answer will be off
- Sun Oct 06, 2019 11:09 pm
- Forum: Significant Figures
- Topic: Sig Figs When Adding and Subtracting
- Replies: 3
- Views: 205
Re: Sig Figs When Adding and Subtracting
when adding or subtracting you use the number with the least sig figs and match the answer to it
- Sun Oct 06, 2019 11:09 pm
- Forum: Significant Figures
- Topic: Sig Figs in Mulitstep Problems
- Replies: 10
- Views: 327
Re: Sig Figs in Mulitstep Problems
Yes, if you round the sig figs too early in the problem, it could produce an answer that's one or two numbers off
- Sun Oct 06, 2019 11:07 pm
- Forum: Significant Figures
- Topic: Rules for Significant Figures
- Replies: 4
- Views: 250
Re: Rules for Significant Figures
Most of them are mentioned but the one that gets me the most is the rule where if there is a decimal point the zeros after it always counts
- Sun Oct 06, 2019 11:05 pm
- Forum: Significant Figures
- Topic: Sig Figs in % Yield
- Replies: 10
- Views: 6566
Re: Sig Figs in % Yield
according to the rounding rule, it should be 64%