Search found 100 matches
- Thu Mar 12, 2020 2:16 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Hydrogen in Reaction Mechanisms
- Replies: 2
- Views: 1257
Re: Hydrogen in Reaction Mechanisms
I don't think so!
- Thu Mar 12, 2020 2:14 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Biological Examples
- Replies: 5
- Views: 776
Re: Biological Examples
Could someone walk through an example?
- Thu Mar 12, 2020 2:13 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Inclusion of Transition States
- Replies: 2
- Views: 1294
Re: Inclusion of Transition States
I think the question would state it.
- Thu Mar 12, 2020 2:13 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Transition Steps
- Replies: 9
- Views: 2590
Re: Transition Steps
^^ agreed
- Wed Mar 11, 2020 11:13 am
- Forum: *Organic Reaction Mechanisms in General
- Topic: K meaning
- Replies: 29
- Views: 2355
Re: K meaning
It's the Boltzmann's constant! 1.380649×10−23 J/K
- Sat Mar 07, 2020 3:01 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: intergrated rate law
- Replies: 9
- Views: 673
Re: intergrated rate law
I think it's on the equation sheet?
- Sat Mar 07, 2020 3:01 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Units and order
- Replies: 3
- Views: 590
Re: Units and order
Does anyone have an example they can walk through?
- Sat Mar 07, 2020 3:00 pm
- Forum: Zero Order Reactions
- Topic: Zero Order Reactions
- Replies: 8
- Views: 1073
Re: Zero Order Reactions
Anybody have an example from the textbook?
- Sat Mar 07, 2020 3:00 pm
- Forum: Zero Order Reactions
- Topic: third order
- Replies: 11
- Views: 1232
Re: third order
Does this apply to W20?
- Sat Mar 07, 2020 3:00 pm
- Forum: Zero Order Reactions
- Topic: Graphs
- Replies: 13
- Views: 1402
Re: Graphs
Anyone know if this is still relevant?
- Sun Mar 01, 2020 4:59 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: rust
- Replies: 9
- Views: 770
Re: rust
I think it will probably be the context of a longer problem.
- Sun Mar 01, 2020 4:58 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Electrochemical Series
- Replies: 6
- Views: 572
Re: Electrochemical Series
Agreed. ^^
- Sun Mar 01, 2020 4:58 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Metal dissolution
- Replies: 10
- Views: 1050
Re: Metal dissolution
Does anyone have an example they could use to illustrate this?
- Sun Mar 01, 2020 4:57 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: pH Electrodes, Corrosion, Etc
- Replies: 2
- Views: 219
Re: pH Electrodes, Corrosion, Etc
I agree, I think it was in a few hw examples.
- Sun Mar 01, 2020 4:56 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Preventing Corrosion
- Replies: 2
- Views: 223
Re: Preventing Corrosion
Is this the only example where this would be true?
- Wed Feb 19, 2020 11:16 am
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: Concept of "Cold"
- Replies: 8
- Views: 2657
Re: Concept of "Cold"
Is there an example in the textbook that anyone could explain?
- Wed Feb 19, 2020 11:16 am
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: fossil fuels on midterm [ENDORSED]
- Replies: 2
- Views: 1703
Re: fossil fuels on midterm [ENDORSED]
Are there any other ways this could manifest on a future exam?
- Wed Feb 19, 2020 11:15 am
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: Why energy crisis?
- Replies: 8
- Views: 4448
Re: Why energy crisis?
Is there a problem in the textbook that illustrates this concept?
- Wed Feb 19, 2020 11:14 am
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: Energy Density
- Replies: 10
- Views: 4895
Re: Energy Density
I think the higher the density, the greater the capacity.
- Wed Feb 19, 2020 11:14 am
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: Why ethanol?
- Replies: 7
- Views: 1791
Re: Why ethanol?
It's far more readily available!
- Sat Feb 15, 2020 7:18 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Question 4J.7
- Replies: 5
- Views: 372
Re: Question 4J.7
Enthalpy of formation of O2 is 0 at its most stable form.
- Sat Feb 15, 2020 7:18 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Why are exothermic reactions generally spontaneous?
- Replies: 16
- Views: 1258
Re: Why are exothermic reactions generally spontaneous?
There is a grid on one of the pages in the chapter about Delta G that could be helpful to explain this!
- Sat Feb 15, 2020 7:17 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Delta G
- Replies: 6
- Views: 372
Re: Delta G
The degree sign indicates standard form.
- Sat Feb 15, 2020 7:16 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: K and Q and G
- Replies: 6
- Views: 460
Re: K and Q and G
Only if the system is at equilibrium can replace Q with K in this equation.
- Sat Feb 15, 2020 7:15 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs Free energy concept
- Replies: 16
- Views: 882
Re: Gibbs Free energy concept
Gibbs free energy is the energy that is available to do work. Delta G indicates if it is spontaneous!
- Sun Feb 09, 2020 10:22 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Energy Change
- Replies: 4
- Views: 219
Re: Energy Change
Does anyone have an example from the textbook?
- Sun Feb 09, 2020 10:21 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Molar Entropy
- Replies: 4
- Views: 283
Re: Molar Entropy
Molar entropy = entropy content of one mole of substance
- Mon Feb 03, 2020 10:15 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Third Law concept and problem types
- Replies: 4
- Views: 665
Re: Third Law concept and problem types
I think that you use it to find changes in entropy within systems and in relation to their surroundings.
- Mon Feb 03, 2020 10:14 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Boltzmann Equation
- Replies: 4
- Views: 167
Re: Boltzmann Equation
Can someone walk through an example?
- Mon Feb 03, 2020 10:13 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Residual Entropy
- Replies: 3
- Views: 78
Re: Residual Entropy
^^^ Does anyone have an example that they could walk through?
- Mon Feb 03, 2020 10:13 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Midterm Review
- Replies: 7
- Views: 425
Re: Midterm Review
I don't think there's one yet!
- Mon Feb 03, 2020 10:12 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Degeneracy
- Replies: 4
- Views: 105
Re: Degeneracy
Does anyone know the context in which we would have to be able to solve this?
- Thu Jan 30, 2020 9:20 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Delta T
- Replies: 4
- Views: 1690
Re: Delta T
Because it gives off heat.
- Thu Jan 30, 2020 9:20 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Specific Heat Capacity, Molar Heat capacity, and the Third?
- Replies: 3
- Views: 136
Re: Specific Heat Capacity, Molar Heat capacity, and the Third?
I think he was calling specific attention to the fact that specific heat capacity and specific heat are the same thing?
- Thu Jan 30, 2020 9:19 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat, Temperature, Enthalpy
- Replies: 4
- Views: 150
Re: Heat, Temperature, Enthalpy
Does anyone have a direct example from the textbook to illustrate this?
- Thu Jan 30, 2020 9:19 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Closed Systems
- Replies: 13
- Views: 731
Re: Closed Systems
I think a closed system can only be changed by a change to pressure or volume.
- Thu Jan 30, 2020 9:18 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Celcius and Kelvin
- Replies: 11
- Views: 475
Re: Celcius and Kelvin
I think it was on the equation sheet? To convert from Celsius to Kelvin, just add 273.
- Wed Jan 22, 2020 3:12 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Changing K
- Replies: 13
- Views: 541
Re: Changing K
I think that temperature is the only relevant factor that changes K.
- Wed Jan 22, 2020 3:11 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: exothermic reactions
- Replies: 19
- Views: 2135
Re: exothermic reactions
I use this to remember: if temperature increases, exothermic reactions shift to the left and everything is "the opposite".
- Wed Jan 22, 2020 3:10 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Le Chatelier's in relation to stability
- Replies: 3
- Views: 139
Re: Le Chatelier's in relation to stability
Does anyone have an example they could walk me through?
- Wed Jan 22, 2020 3:09 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: effects on pH
- Replies: 7
- Views: 266
Re: effects on pH
They're considered spectator ions and insignificant!
- Wed Jan 22, 2020 3:08 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Le Chatelier's Principle
- Replies: 19
- Views: 1744
Re: Le Chatelier's Principle
It applies anytime a reaction at equilibrium is disturbed.
- Sun Jan 19, 2020 11:43 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Le Chatelier's Principle
- Replies: 7
- Views: 207
Re: Le Chatelier's Principle
Does anyone have an example they can walk through?
- Sun Jan 19, 2020 11:42 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Identifying endothermic vs exothermic
- Replies: 7
- Views: 318
Re: Identifying endothermic vs exothermic
Check if the products have more energy than the reactants to decide if its exothermic!
- Sun Jan 19, 2020 11:42 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE Table
- Replies: 4
- Views: 269
Re: ICE Table
I think based on whether its a forward or backward reaction?
- Sun Jan 19, 2020 11:41 pm
- Forum: Ideal Gases
- Topic: When to use this equation
- Replies: 14
- Views: 503
Re: When to use this equation
Are there any conditions where you can't use it? Like that could be a trick question?
- Sun Jan 19, 2020 11:41 pm
- Forum: Ideal Gases
- Topic: When to use PV=nRT
- Replies: 5
- Views: 174
Re: When to use PV=nRT
Does anyone have an example they could walk through?
- Fri Jan 10, 2020 9:16 am
- Forum: Ideal Gases
- Topic: 5G1 true/false
- Replies: 8
- Views: 290
Re: 5G1 true/false
It's false because when you increase the pressure of the reactants, the pressure of the products will also increase.
- Fri Jan 10, 2020 9:15 am
- Forum: Ideal Gases
- Topic: Reaction Quotient (Q)
- Replies: 8
- Views: 343
Re: Reaction Quotient (Q)
It's just the way for you to determine whether the reaction is at equilibrium.
- Fri Jan 10, 2020 9:15 am
- Forum: Ideal Gases
- Topic: K
- Replies: 10
- Views: 547
Re: K
Yes I think so!
- Fri Jan 10, 2020 9:14 am
- Forum: Ideal Gases
- Topic: pressure [ENDORSED]
- Replies: 13
- Views: 1121
Re: pressure [ENDORSED]
Yes, it can be changed by changing the temperature or adding an inert gas (without changing the volume).
- Fri Jan 10, 2020 9:14 am
- Forum: Ideal Gases
- Topic: What is the Importance of homogeneous vs heterogeneous equilibria [ENDORSED]
- Replies: 12
- Views: 556
Re: What is the Importance of homogeneous vs heterogeneous equilibria [ENDORSED]
I think that it's only purpose is to narrow in on the states of the reactants and products in the equilibrium equation, so you know what to include in a K or Q calculation for an equation.
- Sat Dec 07, 2019 8:51 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: 17.35 Chelating Compounds
- Replies: 7
- Views: 1264
Re: 17.35 Chelating Compounds
I also had this question! ^^
- Sat Dec 07, 2019 10:33 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ka Kb on the Final
- Replies: 2
- Views: 141
Re: Ka Kb on the Final
I'm also very unclear on this ^^ Can someone please explain?
- Wed Nov 27, 2019 6:51 am
- Forum: Naming
- Topic: Naming Coordination Compound
- Replies: 5
- Views: 341
Re: Naming Coordination Compound
What about anions and cations outside of the coordination sphere? How do you use prefixes with them?
- Wed Nov 27, 2019 6:50 am
- Forum: Naming
- Topic: Naming Coordination Compound with Iron
- Replies: 4
- Views: 479
Re: Naming Coordination Compound with Iron
^^ I also had this question. Does anyone have any other examples for exceptions?
- Wed Nov 27, 2019 6:49 am
- Forum: Naming
- Topic: Bis,tris, etc
- Replies: 6
- Views: 332
Re: Bis,tris, etc
I think you use it when the ligand already has a bi or prefix.
- Wed Nov 27, 2019 6:48 am
- Forum: Naming
- Topic: Naming coordination compound
- Replies: 5
- Views: 385
Re: Naming coordination compound
I am also confused on how (en) influences the naming. Can anyone give an example?
- Wed Nov 27, 2019 6:46 am
- Forum: Naming
- Topic: Alphabetical Order
- Replies: 6
- Views: 411
Re: Alphabetical Order
Can anyone walk me through an example?
- Fri Nov 22, 2019 7:33 pm
- Forum: Hybridization
- Topic: for test 2
- Replies: 7
- Views: 280
Re: for test 2
I don't think so, no.
- Fri Nov 22, 2019 7:33 pm
- Forum: Hybridization
- Topic: hybridization
- Replies: 11
- Views: 585
Re: hybridization
^^ What is a step by step method?
- Fri Nov 22, 2019 7:32 pm
- Forum: Hybridization
- Topic: Hybridization with lone pairs on central atom
- Replies: 6
- Views: 474
Re: Hybridization with lone pairs on central atom
Yes, and I think page 119 had an example on this?
- Fri Nov 22, 2019 7:31 pm
- Forum: Hybridization
- Topic: hybridization on the test?
- Replies: 10
- Views: 669
Re: hybridization on the test?
I think it's best to know how they relate to hybridization, but really only sigma and pi bonds I think.
- Fri Nov 22, 2019 7:31 pm
- Forum: Hybridization
- Topic: lone pairs in hybridization
- Replies: 8
- Views: 559
Re: lone pairs in hybridization
Yes, I think lone pairs act as bonding in hybridization.
- Sun Nov 17, 2019 9:37 am
- Forum: Hybridization
- Topic: The D Orbital
- Replies: 4
- Views: 648
Re: The D Orbital
I think pi bonds? Does anyone else have an explanation as to why?
- Sun Nov 17, 2019 9:36 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Van Der Waals Interaction
- Replies: 11
- Views: 657
Re: Van Der Waals Interaction
Every molecule experiences these forces.
- Sun Nov 17, 2019 9:35 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: London dispersion forces and vander waals
- Replies: 5
- Views: 544
Re: London dispersion forces and vander waals
I think that London Dispersion Forces are a specific type of vander waals.
- Sun Nov 17, 2019 9:35 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles with Different Atoms
- Replies: 4
- Views: 606
Re: Bond Angles with Different Atoms
Does anyone have another example to illustrate these explanations?
- Sun Nov 17, 2019 9:34 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Pentagonal Bipyramidal
- Replies: 8
- Views: 578
Re: Pentagonal Bipyramidal
Does anyone know where in the textbook I could find a diagram for this?
- Thu Nov 07, 2019 10:53 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Resonance Delocalization
- Replies: 5
- Views: 212
Re: Resonance Delocalization
I think this is roughly explained by the concept of resonance structures.
- Thu Nov 07, 2019 10:52 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polar v. Nonpolar
- Replies: 11
- Views: 2135
Re: Polar v. Nonpolar
Try drawing out a lewis structure and comparing formal charges for each atom.
- Thu Nov 07, 2019 10:52 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sulfur bonding
- Replies: 5
- Views: 248
Re: Sulfur bonding
I think that this is called an expanded octet.
- Thu Nov 07, 2019 10:51 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Wavelength Plausibility
- Replies: 31
- Views: 2775
Re: Wavelength Plausibility
I think that a de Broglie wavelength less than 10-15m does not have detectable wave-like properties.
- Thu Nov 07, 2019 10:48 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: how to draw lewis structure
- Replies: 9
- Views: 945
Re: how to draw lewis structure
Check to see if it's an ion!
- Thu Nov 07, 2019 10:47 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Writing e- Configurations
- Replies: 15
- Views: 705
Re: Writing e- Configurations
I think that you write the noble gas and then the other notation unless otherwise stated by the question.
- Thu Oct 31, 2019 11:24 am
- Forum: Bond Lengths & Energies
- Topic: Boiling points
- Replies: 2
- Views: 642
Re: Boiling points
I would look at the bonds in the molecules and their respective strengths.
- Thu Oct 31, 2019 11:23 am
- Forum: Lewis Structures
- Topic: Charges on Lewis Structures
- Replies: 7
- Views: 505
Re: Charges on Lewis Structures
I think you should only have to make the positive or negative notation on the atom itself (eg. Na+).
- Thu Oct 31, 2019 11:22 am
- Forum: Limiting Reactant Calculations
- Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
- Replies: 68
- Views: 7434
Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
So do we have to have exact units for each step of the problem, or just correct units for the answer?
- Thu Oct 31, 2019 11:20 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Question about the Principles on Tests
- Replies: 5
- Views: 309
Re: Question about the Principles on Tests
I would memorize them,just to be safe.
- Fri Oct 25, 2019 12:34 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: d orbital
- Replies: 3
- Views: 392
Re: d orbital
I think they are Cu and Cr!
- Fri Oct 25, 2019 12:33 pm
- Forum: Properties of Electrons
- Topic: What's the difference between a shell, a subshell, an energy level, and an orbital?
- Replies: 8
- Views: 630
Re: What's the difference between a shell, a subshell, an energy level, and an orbital?
Shell is the quantum number n. Subshell is the shape (s, p, d, f) and quantum number l. Orbital is the orientation of the subshell!
- Fri Oct 25, 2019 12:32 pm
- Forum: Properties of Electrons
- Topic: Spin
- Replies: 5
- Views: 229
Re: Spin
I think it involves the electron's intrinsic angular momentum.
- Fri Oct 25, 2019 12:31 pm
- Forum: Properties of Electrons
- Topic: Subshell Exceptions
- Replies: 6
- Views: 507
Re: Subshell Exceptions
I think that it depends on the conditions at which the most stability is achieved.
- Fri Oct 25, 2019 12:30 pm
- Forum: Properties of Electrons
- Topic: Electron Principles
- Replies: 3
- Views: 258
Re: Electron Principles
Can anyone summarize this for me?
- Sun Oct 20, 2019 10:31 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Test 1 [ENDORSED]
- Replies: 107
- Views: 28752
Re: Test 1 [ENDORSED]
Can someone repeat how the tests are curved?
- Sun Oct 20, 2019 10:30 pm
- Forum: DeBroglie Equation
- Topic: Deriving the DeBrogile Equation
- Replies: 8
- Views: 407
Re: Deriving the DeBrogile Equation
I think it's useful to know how to derive it!
- Sun Oct 20, 2019 10:29 pm
- Forum: DeBroglie Equation
- Topic: DeBroglie Equation
- Replies: 11
- Views: 387
Re: DeBroglie Equation
It's to find wavelength, right?
- Sun Oct 20, 2019 10:28 pm
- Forum: DeBroglie Equation
- Topic: When to combine equations
- Replies: 10
- Views: 594
Re: When to combine equations
You need to make sure they have a variable in common!
- Sun Oct 20, 2019 10:27 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Uncertainty in Speed [ENDORSED]
- Replies: 31
- Views: 18002
Re: Uncertainty in Speed [ENDORSED]
I think you need to calculate 1% of the hydrogen radius (0.05 nm) in meters for the uncertainty.
- Sun Oct 13, 2019 11:02 pm
- Forum: DeBroglie Equation
- Topic: De Broglie's Equation
- Replies: 17
- Views: 642
Re: De Broglie's Equation
No, light cannot be used.
- Sun Oct 13, 2019 11:01 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Heisenberg Uncertainty Principle Post-Module Assessment
- Replies: 2
- Views: 96
Re: Heisenberg Uncertainty Principle Post-Module Assessment
Why is there a difference in calling it the uncertainty vs undeterminability principle?
- Sun Oct 13, 2019 11:00 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Week 2 Homework Problems [ENDORSED]
- Replies: 67
- Views: 8485
Re: Week 2 Homework Problems [ENDORSED]
I believe it is from the review section and the quantum section.
- Sun Oct 13, 2019 10:59 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Wavelength Plausibility
- Replies: 31
- Views: 2775
Re: Wavelength Plausibility
I believe using 700 to 400 is acceptable (and easier to remember).
- Sun Oct 13, 2019 10:58 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg equation [ENDORSED]
- Replies: 73
- Views: 9550
Re: Rydberg equation [ENDORSED]
Where does the name Rydberg come from?
- Sun Oct 13, 2019 10:58 pm
- Forum: Limiting Reactant Calculations
- Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
- Replies: 68
- Views: 7434
Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
I believe partial credit is awarded for steps within the overall problem.
- Sat Oct 05, 2019 5:42 pm
- Forum: Limiting Reactant Calculations
- Topic: Percent or theoretical yield
- Replies: 14
- Views: 1313
Re: Percent or theoretical yield
Theoretical yield is the amount you SHOULD be able to create in a perfect laboratory environment, however the actual yield is what you end up getting under realistic lab context. The percentage yield is the ratio between these two.
- Sat Oct 05, 2019 5:40 pm
- Forum: Balancing Chemical Reactions
- Topic: Fractions in front of compounds
- Replies: 12
- Views: 655
Re: Fractions in front of compounds
You should always multiply to eliminate fractions across the entire equation, to ensure it's balanced on both sides.
- Sat Oct 05, 2019 5:39 pm
- Forum: Empirical & Molecular Formulas
- Topic: Tips for Finding Which Number to Multiply a Decimal By to Get a Whole Number
- Replies: 10
- Views: 1223
Re: Tips for Finding Which Number to Multiply a Decimal By to Get a Whole Number
I would use trial and error and try to estimate the lowest multiple of the numbers you have already and go from there.
- Sat Oct 05, 2019 5:38 pm
- Forum: Empirical & Molecular Formulas
- Topic: Writing Empirical Formulas
- Replies: 8
- Views: 913
Re: Writing Empirical Formulas
I believe you tend to put Carbon, Hydrogen and Oxygen first, and go off of the others in alphabetical order?
- Sat Oct 05, 2019 5:36 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Rounding
- Replies: 12
- Views: 891
Re: Rounding
I think it is best to round to the number of significant figures stated in the question (i.e. the number of sig figs of the data the question gives you).