## Search found 104 matches

Thu Mar 05, 2020 11:10 pm
Forum: General Rate Laws
Topic: Determining Order
Replies: 6
Views: 125

### 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: 120

### 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: 99

### 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: 155

### 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: 106

### 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: 125

### 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: 195

### 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: 51

### 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: 58

### 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: 18

### 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: 117

### 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: 43

### 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: 139

### 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: 192

### Re: Platinum in cell diagram

Could you use other metals? Or only Pt?
Mon Feb 24, 2020 10:49 pm
Forum: Balancing Redox Reactions
Replies: 7
Views: 136

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: 84

### 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: 78

### 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: 304

### 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: 121

### 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: 217

### 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: 34

### 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: 24

### 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: 25

### 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: 44

### 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: 39

### 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: 31

### 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: 23

### 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: 21

### 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: 54

### 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: 66

### 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: 68

### 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: 77

### 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: 56

### 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: 122

### 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: 1351

### 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: 50

### 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: 303

### 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: 171

### 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: 38

### 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: 69

### 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: 34

### 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: 189

### 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: 73

### 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: 84

### 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: 51

### 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: 110

### 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: 166

### 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: 41

### 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: 57

### 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: 143

### 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: 75

### 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: 114

### 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: 34

### 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: 107

### water

How can you tell if water is acting as an acid or a base?
Tue Dec 03, 2019 10:31 am
Forum: Naming
Topic: cations
Replies: 2
Views: 41

### 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: 82

### 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: 26

### 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: 61

### 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: 62

### 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: 57

### 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: 131

### 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: 108

### 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: 287

### 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: 57

### 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: 37

### 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
Replies: 1
Views: 135

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: 84

### 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: 116

### 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: 101

### 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: 219

### 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: 110

### 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: 123

### 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: 215

### 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: 184

### 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: 90

### 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: 291

### 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: 57

### 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: 55

### 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: 37

### 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: 270

### 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: 61

### 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: 24

### 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: 65

### 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: 60

### 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: 86

### 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: 166

### 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: 59

### 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: 99

### 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: 153

### 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: 131

### 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: 465

### 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.
\
Wed Oct 16, 2019 11:22 am
Forum: Photoelectric Effect
Topic: Equations and Formulas
Replies: 4
Views: 73

### 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: 69

### 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: 166

### 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: 71

### 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: 140

### 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: 214

### 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: 95

### 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: 128

### 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: 108

### 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.