Search found 104 matches
- Thu Mar 05, 2020 11:10 pm
- Forum: General Rate Laws
- Topic: Determining Order
- Replies: 6
- Views: 445
Re: Determining Order
Can the order keep increasing? Or do they stop at two?
- Thu Mar 05, 2020 11:07 pm
- Forum: General Rate Laws
- Topic: units
- Replies: 9
- Views: 521
Re: units
are the units for rate different for reactions of different orders?
- Thu Mar 05, 2020 11:05 pm
- Forum: General Rate Laws
- Topic: Rate Law Slopes
- Replies: 3
- Views: 289
Re: Rate Law Slopes
The second order graph has a slope of k, and the zero order graph has a slope of -k. For the first order, sometimes the graph is exponential, but the slope is equal to k if ln(A) is on the y axis.
- Thu Mar 05, 2020 11:01 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: thermodynamically stable
- Replies: 6
- Views: 468
thermodynamically stable
What is the easiest way to tell if something is thermodynamically stable?
- Thu Mar 05, 2020 10:57 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: different units
- Replies: 4
- Views: 363
different units
Why are the units different in first, second, etc. ordered reactions?
- Fri Feb 28, 2020 3:33 pm
- Forum: Balancing Redox Reactions
- Topic: Oxygen's oxidation #
- Replies: 6
- Views: 424
Re: Oxygen's oxidation #
Oxygen naturally occurs in its most stable form, O2. Because this is its stable form, its charge is zero.
- Fri Feb 28, 2020 3:32 pm
- Forum: Balancing Redox Reactions
- Topic: Writing half reactions
- Replies: 9
- Views: 627
Re: Writing half reactions
Why would you not just write the half reaction how it is given?
- Fri Feb 28, 2020 3:29 pm
- Forum: Balancing Redox Reactions
- Topic: 6k3d
- Replies: 3
- Views: 218
Re: 6k3d
I also think it's Cl- because we wouldn't be able to solve it using concepts we know if the Cl2 is on both sides.
- Fri Feb 28, 2020 2:54 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.3 part a
- Replies: 2
- Views: 153
6K.3 part a
In this problem, is the equation Cl2 + 2e- yields 2Cl- given to us?
- Fri Feb 28, 2020 2:32 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.1 part b
- Replies: 1
- Views: 106
6K.1 part b
Why do you add 2e- to the left side of the oxidation reaction? (how do you know how many e- to add?)
- Mon Feb 24, 2020 11:23 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: conducting solids
- Replies: 5
- Views: 326
Re: conducting solids
So are groups 1 and 2 metals considered to be conducting solids?
- Mon Feb 24, 2020 11:20 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: electrolysis
- Replies: 2
- Views: 177
electrolysis
I am still a little confused after lecture today-what exactly do we need to know about electrolysis? I know it has to do with converting electrical energy to chemical energy, but how does it do this?
- Mon Feb 24, 2020 11:16 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Salt Bridge
- Replies: 6
- Views: 393
Re: Salt Bridge
What would be a biological example of a salt bridge?
- Mon Feb 24, 2020 11:14 pm
- Forum: Balancing Redox Reactions
- Topic: Platinum in cell diagram
- Replies: 10
- Views: 716
Re: Platinum in cell diagram
Could you use other metals? Or only Pt?
- Mon Feb 24, 2020 10:49 pm
- Forum: Balancing Redox Reactions
- Topic: adding e-
- Replies: 7
- Views: 532
adding e-
In a redox reaction, how do you know how many electrons to add to each part of the reaction? And how do you know which side of the equation to add them on?
- Tue Feb 18, 2020 12:13 pm
- Forum: Van't Hoff Equation
- Topic: Constant delta H
- Replies: 4
- Views: 285
Re: Constant delta H
Can we always assume that delta S naught is constant when using the Van't Hoff Equation?
- Tue Feb 18, 2020 12:07 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Delta G equations
- Replies: 4
- Views: 254
Re: Delta G equations
It depends on what values/information are given, if the reaction is at equilibrium, and if it is in its standard state.
- Tue Feb 18, 2020 12:02 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: ∆G = ∆Gº + RT lnQ
- Replies: 12
- Views: 2514
Re: ∆G = ∆Gº + RT lnQ
Does the system have to be at equilibrium in order to use this equation?
- Tue Feb 18, 2020 11:58 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Van't Hoff Equation
- Replies: 4
- Views: 394
Van't Hoff Equation
When do you use the Van't Hoff Equation? And how does it relate to Gibbs Free Energy?
- Tue Feb 18, 2020 11:55 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Signs for Gibbs Free Energy
- Replies: 11
- Views: 649
Re: Signs for Gibbs Free Energy
It also helps me to think of the signs in terms of energy being absorbed and released.
- Tue Feb 04, 2020 10:19 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: textbook problem 4D.23
- Replies: 1
- Views: 127
textbook problem 4D.23
In the solutions manual, it says that the equation we need to obtain is N2 + 5/2O2 yields N2O5. How do we know that this is the reaction we want?
- Tue Feb 04, 2020 10:00 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: standard reaction enthalpy
- Replies: 3
- Views: 171
standard reaction enthalpy
When you find the standard reaction enthalpy for a reaction, is the value in units of kJ or kJ/mol? I've seen both used in the textbook.
- Tue Feb 04, 2020 9:55 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: textbook problem 4D.15
- Replies: 2
- Views: 146
textbook problem 4D.15
In this problem, where do you obtain the information you need in order to write the three different balanced equations that are written in the solutions manual?
- Tue Feb 04, 2020 8:26 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: work/energy units
- Replies: 3
- Views: 130
work/energy units
On the tests/midterm, should we put energy and work in units of J or KJ?
- Tue Feb 04, 2020 8:24 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: moles or grams in heat capacity equation
- Replies: 3
- Views: 113
moles or grams in heat capacity equation
In the different heat capacity equations, how do you know whether to use grams or moles? Does it depend on the units that the given heat capacity is in?
- Sat Feb 01, 2020 5:42 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: insignificance of pdeltav
- Replies: 1
- Views: 82
insignificance of pdeltav
When it says that pdeltav is insignificant when a reaction that involves solids and liquids is under constant pressure, what does that exactly mean? Is it similar to excluding the concentrations of solids in liquids in ICE tables in chemical equilibrium problems?
- Sat Feb 01, 2020 5:39 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: entropy units
- Replies: 2
- Views: 62
entropy units
What are entropy's units?
- Sat Feb 01, 2020 5:38 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: using entropy
- Replies: 1
- Views: 60
using entropy
When exactly do we use entropy?
- Sat Feb 01, 2020 5:36 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: microstates
- Replies: 3
- Views: 113
microstates
What exactly is a microstate?
- Tue Jan 28, 2020 11:51 am
- Forum: Phase Changes & Related Calculations
- Topic: Change in Temperature
- Replies: 10
- Views: 243
Re: Change in Temperature
Also, a change in temperature is the only factor that will change the K value for a reaction.
- Tue Jan 28, 2020 11:47 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Standard enthalpy of formation
- Replies: 6
- Views: 201
Re: Standard enthalpy of formation
Because elements exist in the form that requires the least amount of energy, so in their natural state, the standard enthalpy of formation would be zero.
- Tue Jan 28, 2020 11:45 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpies
- Replies: 11
- Views: 248
Re: Bond Enthalpies
Is calculating enthalpy from bond enthalpies more accurate?
- Tue Jan 28, 2020 11:44 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: delta H units
- Replies: 4
- Views: 493
delta H units
When is delta H written in kj versus kj/mol?
- Tue Jan 28, 2020 11:43 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: qp vs qv
- Replies: 6
- Views: 317
qp vs qv
What is the difference between the qp and qv equations besides the fact that the first occurs under a constant pressure and the second occurs under a constant volume?
- Tue Jan 21, 2020 10:56 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Le Chatelier's Principle
- Replies: 19
- Views: 1611
Re: Le Chatelier's Principle
It's all about the reaction rebalancing after a physical change occurs.
- Tue Jan 21, 2020 10:54 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: van't hoff's equation
- Replies: 3
- Views: 133
van't hoff's equation
Do we need to know Van't Hoff's equation for this test?
- Tue Jan 21, 2020 10:53 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: exothermic reactions
- Replies: 19
- Views: 1895
exothermic reactions
Why does adding heat to an exothermic reaction favor the reactants?
- Tue Jan 21, 2020 10:43 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Difference in PH between strong and weak acids
- Replies: 11
- Views: 478
Re: Difference in PH between strong and weak acids
The stronger the acid, the lower the pH. The weaker the acid, the closer to 7 it is.
- Tue Jan 21, 2020 10:34 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: expanding the volume
- Replies: 3
- Views: 120
expanding the volume
Why does expanding the volume shift the reaction towards the side with more moles?
- Tue Jan 21, 2020 10:31 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: effects on pH
- Replies: 7
- Views: 215
effects on pH
Why do conjugate bases/acids and group 1/2 cations not affect pH?
- Tue Jan 14, 2020 4:52 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: concentrations
- Replies: 5
- Views: 99
concentrations
Why does changing the concentration of the reactants have no effect on the K value?
- Tue Jan 14, 2020 4:37 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Autoprolysis
- Replies: 9
- Views: 646
Re: Autoprolysis
It's also important to remember that amphiprotic is different than amphoteric, which means that it reacts with both acids and bases.
- Tue Jan 14, 2020 4:33 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: volume's effect on K
- Replies: 7
- Views: 193
volume's effect on K
So just to confirm, volume affects the products/reactants of a reaction, but it doesn't affect the value of K? And how does volume affect the reactants/products?
- Tue Jan 14, 2020 4:31 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: "Quick way" part in Lecture
- Replies: 7
- Views: 169
Re: "Quick way" part in Lecture
Does the quick way work every time? Or only in certain scenarios?
- Tue Jan 14, 2020 4:26 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: pressure
- Replies: 5
- Views: 159
pressure
When does pressure affect the reactants/products of a reaction at equilibrium? Does it depend on the type of gas?
- Wed Jan 08, 2020 11:49 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K vs. Q
- Replies: 10
- Views: 504
K vs. Q
What is the difference between K and Q? Since the same process is used to find both values, how can they be equal to different numbers?
- Wed Jan 08, 2020 11:47 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium Constant
- Replies: 8
- Views: 375
Re: Equilibrium Constant
How do you know whether to use Kc/Kp versus simply K? What is the difference?
- Wed Jan 08, 2020 11:46 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Multiples of Chemical Equation
- Replies: 3
- Views: 111
Re: Multiples of Chemical Equation
That should work because 1/3 is still a number that can be multiplied through and thus be used as the power of a constant.
- Wed Jan 08, 2020 11:44 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: solids/liquids
- Replies: 4
- Views: 142
solids/liquids
Why are solids and liquids not included in calculating the equilibrium constant? Are only gases and aqueous solutions considered in the K value?
- Wed Jan 08, 2020 11:42 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: units of K
- Replies: 10
- Views: 477
units of K
Why does the equilibrium constant not have units?
- Tue Dec 03, 2019 10:47 am
- Forum: Conjugate Acids & Bases
- Topic: H-F in conjugate bases
- Replies: 3
- Views: 262
H-F in conjugate bases
Why is H-F the only anion in the halogen species that makes the conjugate base of a weak acid alkaline?
- Tue Dec 03, 2019 10:40 am
- Forum: Conjugate Acids & Bases
- Topic: conjugate base and pH
- Replies: 4
- Views: 1933
conjugate base and pH
Why doesn't the conjugate base of a strong acid affect pH?
- Tue Dec 03, 2019 10:36 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: weak acids/bases
- Replies: 1
- Views: 160
weak acids/bases
Is it necessary for us to memorize any weak acids/bases for the final? I know we should know some of the common strong acids/bases but am unsure about the weak ones.
- Tue Dec 03, 2019 10:34 am
- Forum: Amphoteric Compounds
- Topic: water
- Replies: 4
- Views: 398
water
How can you tell if water is acting as an acid or a base?
cations
Will a cation ever be within the coordination sphere of a coordination compound?
- Sun Nov 24, 2019 5:20 pm
- Forum: Biological Examples
- Topic: TMs' biological functions
- Replies: 3
- Views: 231
TMs' biological functions
In our class notes, it says that Cr assists insulin in the control of blood sugar. Is this referring to the element Cr, or is it referring to Cr in the context of a coordination compound?
- Sun Nov 24, 2019 5:17 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: en and edta
- Replies: 1
- Views: 56
en and edta
How does the solutions manual know that en is bidentate and edta is hexadentate?
- Sun Nov 24, 2019 5:16 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: chelating complexes
- Replies: 2
- Views: 160
chelating complexes
How do you know if a molecule is going to be chelating based off of its lewis structure?
- Sun Nov 24, 2019 5:13 pm
- Forum: Naming
- Topic: oxidation state equation
- Replies: 2
- Views: 199
oxidation state equation
Do we need to memorize the equation to determine the oxidation number of a coordination compound? And are we going to learn this equation in class?
- Sun Nov 24, 2019 5:12 pm
- Forum: Naming
- Topic: Cobalt vs. Cobaltate
- Replies: 4
- Views: 381
Cobalt vs. Cobaltate
How do you know whether the name of a compound has, for example, cobalt versus cobaltate at the end of it?
- Thu Nov 21, 2019 10:47 am
- Forum: Hybridization
- Topic: hybridizing d orbitals
- Replies: 7
- Views: 417
hybridizing d orbitals
When d orbitals hybridize, what new orbital(s) do they form?
- Thu Nov 21, 2019 10:40 am
- Forum: Hybridization
- Topic: Knowing when hybridization occurs
- Replies: 6
- Views: 397
Knowing when hybridization occurs
How do you know when hybridization will occur? Does it only occur when an atom forms more bonds than the number of unpaired electrons it has?
- Thu Nov 21, 2019 10:34 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Hybridized increases or decreases
- Replies: 3
- Views: 420
Re: Hybridized increases or decreases
So do bond angles change when an atom is hybridized? Or does it just depend on the atom?
- Thu Nov 21, 2019 10:32 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Double/Triple Bonds in Coordination Compounds
- Replies: 2
- Views: 164
Double/Triple Bonds in Coordination Compounds
When determining the coordination number of a molecule/compound, does a double bond count as two bonds or just one?
- Thu Nov 21, 2019 10:31 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination Number
- Replies: 2
- Views: 145
Coordination Number
Is the coordination number the number of bonds to the central atom or the total number of bonds in a molecule?
- Thu Nov 14, 2019 10:44 am
- Forum: Octet Exceptions
- Topic: existence of radicals
- Replies: 1
- Views: 259
existence of radicals
How do radicals exist? Isn't it extremely unstable for an atom to have an unpaired electron?
- Thu Nov 14, 2019 10:43 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: dipole moment clarification
- Replies: 6
- Views: 325
Re: dipole moment clarification
Can someone define exactly what a dipole moment is? I understand the concept, but is there a specific definition we need to have for it?
- Thu Nov 14, 2019 10:40 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: molecular shape vs. molecular geometry
- Replies: 4
- Views: 260
molecular shape vs. molecular geometry
What is the difference between molecular shape and molecular geometry when using VSEPR?
- Thu Nov 14, 2019 10:38 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Dipole-Dipole vs. Ion-Dipole
- Replies: 2
- Views: 195
Re: Dipole-Dipole vs. Ion-Dipole
Also, ion-dipole interactions are stronger than dipole-dipole interactions.
- Thu Nov 14, 2019 10:36 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Intermolecular forces
- Replies: 10
- Views: 655
Re: Intermolecular forces
You might also here London forces referred to as induced-dipole-induced-dipole interactions.
- Thu Nov 14, 2019 10:32 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR usage
- Replies: 5
- Views: 314
Re: VSEPR usage
Going off of the initial question, can interactions between molecules affect each molecule's shape?
- Thu Nov 14, 2019 10:30 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: bond angles
- Replies: 10
- Views: 435
bond angles
In VSEPR molecules that have varying bond angles between atoms, how do we know which angle degrees are where in the molecule?
- Wed Nov 06, 2019 5:01 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Electron configuration
- Replies: 7
- Views: 455
Re: Electron configuration
Before electrons begin to fill the shells, the 4s orbital is lower in energy than the 3d orbital. However, once the 4s orbital is full and there is at least one electron in the 3d orbital, it becomes lower in energy than 4s, so you write 3d before 4s in the configuration.
- Wed Nov 06, 2019 4:59 pm
- Forum: Electronegativity
- Topic: definitions
- Replies: 8
- Views: 465
Re: definitions
Ionization energy and electron affinity do follow the same trends on the periodic table (even though they are two separate concepts).
- Wed Nov 06, 2019 4:58 pm
- Forum: Electronegativity
- Topic: Electron affinity
- Replies: 4
- Views: 263
Electron affinity
When do we use electron affinity? I feel like we use ionization energy a lot but rarely electron affinity.
- Wed Nov 06, 2019 4:56 pm
- Forum: Electronegativity
- Topic: Ionic or covalent?
- Replies: 17
- Views: 745
Re: Ionic or covalent?
Can a bond have both covalent and ionic properties?
- Wed Nov 06, 2019 4:55 pm
- Forum: Dipole Moments
- Topic: Dipole Moment Changing
- Replies: 3
- Views: 122
Dipole Moment Changing
Will the same molecule always have the same dipole moment or can the value change?
- Mon Oct 28, 2019 1:40 pm
- Forum: Ionic & Covalent Bonds
- Topic: Delocalized Bond
- Replies: 4
- Views: 118
Delocalized Bond
What is a delocalized bond? (A delocalized double bond in particular)
- Mon Oct 28, 2019 1:36 pm
- Forum: Lewis Structures
- Topic: Lone Pairs
- Replies: 3
- Views: 74
Re: Lone Pairs
I do that as well.
- Mon Oct 28, 2019 1:16 pm
- Forum: Bond Lengths & Energies
- Topic: Bond lengths
- Replies: 15
- Views: 987
Re: Bond lengths
Are double bonds always shorter than single bonds? Are there any exceptions?
- Mon Oct 28, 2019 1:13 pm
- Forum: General Science Questions
- Topic: Midterm
- Replies: 1
- Views: 105
Re: Midterm
I'm not sure, but I bet he will address it in class on Wednesday.
- Mon Oct 28, 2019 1:11 pm
- Forum: Ionic & Covalent Bonds
- Topic: Electron configuration for ions
- Replies: 2
- Views: 68
Electron configuration for ions
When an ion's valence electron configuration is 4d10 5s2 or any variation of that, and the ion is positively charged, how do you know which subshell you remove the electrons from?
- Tue Oct 22, 2019 9:46 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: KeV
- Replies: 2
- Views: 129
KeV
What is this unit? KeV
- Tue Oct 22, 2019 9:44 pm
- Forum: DeBroglie Equation
- Topic: When to use the DeBroglie Equation
- Replies: 3
- Views: 107
Re: When to use the DeBroglie Equation
Since p=mv, if you are given either mass or velocity (or both), use the DeBroglie Equation.
- Tue Oct 22, 2019 9:43 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Energy of Electrons
- Replies: 6
- Views: 191
Re: Energy of Electrons
The energy of an electron does increase when it moves up an energy level.
- Tue Oct 22, 2019 9:38 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Subshell vs. Orbital
- Replies: 9
- Views: 1285
Re: Subshell vs. Orbital
A subshell is determined by the l value, and an orbital is determined by the ml value.
- Tue Oct 22, 2019 9:35 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Problem 1B.27
- Replies: 1
- Views: 87
Problem 1B.27
In this problem why do we only use 5m/s as the velocity and disregard the uncertainty of + or - 5?
- Tue Oct 22, 2019 9:33 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: l values
- Replies: 4
- Views: 263
l values
Since it only shows through the f sub-shell, where on the periodic table is there evidence that l can be greater than 3?
- Wed Oct 16, 2019 11:34 am
- Forum: Properties of Electrons
- Topic: Photons
- Replies: 9
- Views: 292
Re: Photons
And when velocity changes, so does momentum since velocity is a component of momentum.
- Wed Oct 16, 2019 11:32 am
- Forum: Properties of Electrons
- Topic: Intensity vs. Energy
- Replies: 10
- Views: 399
Re: Intensity vs. Energy
So does the number of photons have an effect on frequency? Or only intensity?
- Wed Oct 16, 2019 11:25 am
- Forum: Properties of Light
- Topic: Next test
- Replies: 23
- Views: 1030
Re: Next test
My TA said that as the tests get harder, the equations sheet will become more extensive so we don't have to memorize all of the new equations we learn.
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- Wed Oct 16, 2019 11:22 am
- Forum: Photoelectric Effect
- Topic: Equations and Formulas
- Replies: 4
- Views: 117
Re: Equations and Formulas
If you're dealing with momentum, you will use the third equation.
- Wed Oct 16, 2019 11:19 am
- Forum: Properties of Light
- Topic: Planck's Constant
- Replies: 2
- Views: 158
Planck's Constant
What are the units for Planck's constant again?
- Wed Oct 09, 2019 4:42 pm
- Forum: Properties of Electrons
- Topic: Energy of Electron
- Replies: 10
- Views: 355
Re: Energy of Electron
Is this also what "quantum theory" means? Like it refers to the discrete states in which electrons exist?
- Wed Oct 09, 2019 4:34 pm
- Forum: Properties of Light
- Topic: High Intensity
- Replies: 5
- Views: 171
Re: High Intensity
So light intensity is determined by both amplitude and the number of photons? Do they play an equal part in determining frequency, or does one overpower the other?
- Wed Oct 09, 2019 4:32 pm
- Forum: Photoelectric Effect
- Topic: Photon [ENDORSED]
- Replies: 6
- Views: 280
Re: Photon [ENDORSED]
How big is a photon in comparison to an electron?
- Wed Oct 09, 2019 4:28 pm
- Forum: Properties of Electrons
- Topic: electron energy [ENDORSED]
- Replies: 7
- Views: 502
electron energy [ENDORSED]
Does an electron lose energy when it moves up an energy level? Or does it just decrease?
- Wed Oct 09, 2019 4:24 pm
- Forum: Properties of Light
- Topic: Speed of Light
- Replies: 4
- Views: 224
Speed of Light
Does the speed of light constant only apply to a vacuum?
- Wed Oct 02, 2019 10:12 pm
- Forum: Empirical & Molecular Formulas
- Topic: Clarification on the Vitamin C Example
- Replies: 6
- Views: 245
Re: Clarification on the Vitamin C Example
It would, but we have to make sure we account for significant figures. Also, we lose precision every time we round so this isn't significantly worse than other problems we have done.
- Wed Oct 02, 2019 10:05 pm
- Forum: Balancing Chemical Reactions
- Topic: Combustion Reaction Notation
- Replies: 6
- Views: 184
Re: Combustion Reaction Notation
In these situations, the input of energy is implied, so we don't have to write it. However, as the reactions get more complicated, we may have to indicate the input of energy.