Search found 104 matches

by Katie Bart 1I
Thu Mar 05, 2020 11:10 pm
Forum: General Rate Laws
Topic: Determining Order
Replies: 6
Views: 60

Re: Determining Order

Can the order keep increasing? Or do they stop at two?
by Katie Bart 1I
Thu Mar 05, 2020 11:07 pm
Forum: General Rate Laws
Topic: units
Replies: 9
Views: 75

Re: units

are the units for rate different for reactions of different orders?
by Katie Bart 1I
Thu Mar 05, 2020 11:05 pm
Forum: General Rate Laws
Topic: Rate Law Slopes
Replies: 3
Views: 37

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.
by Katie Bart 1I
Thu Mar 05, 2020 11:01 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: thermodynamically stable
Replies: 6
Views: 66

thermodynamically stable

What is the easiest way to tell if something is thermodynamically stable?
by Katie Bart 1I
Thu Mar 05, 2020 10:57 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: different units
Replies: 4
Views: 51

different units

Why are the units different in first, second, etc. ordered reactions?
by Katie Bart 1I
Fri Feb 28, 2020 3:33 pm
Forum: Balancing Redox Reactions
Topic: Oxygen's oxidation #
Replies: 6
Views: 54

Re: Oxygen's oxidation #

Oxygen naturally occurs in its most stable form, O2. Because this is its stable form, its charge is zero.
by Katie Bart 1I
Fri Feb 28, 2020 3:32 pm
Forum: Balancing Redox Reactions
Topic: Writing half reactions
Replies: 9
Views: 80

Re: Writing half reactions

Why would you not just write the half reaction how it is given?
by Katie Bart 1I
Fri Feb 28, 2020 3:29 pm
Forum: Balancing Redox Reactions
Topic: 6k3d
Replies: 3
Views: 29

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.
by Katie Bart 1I
Fri Feb 28, 2020 2:54 pm
Forum: Balancing Redox Reactions
Topic: 6K.3 part a
Replies: 2
Views: 26

6K.3 part a

In this problem, is the equation Cl2 + 2e- yields 2Cl- given to us?
by Katie Bart 1I
Fri Feb 28, 2020 2:32 pm
Forum: Balancing Redox Reactions
Topic: 6K.1 part b
Replies: 1
Views: 11

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?)
by Katie Bart 1I
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: 39

Re: conducting solids

So are groups 1 and 2 metals considered to be conducting solids?
by Katie Bart 1I
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: 19

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?
by Katie Bart 1I
Mon Feb 24, 2020 11:16 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Salt Bridge
Replies: 6
Views: 51

Re: Salt Bridge

What would be a biological example of a salt bridge?
by Katie Bart 1I
Mon Feb 24, 2020 11:14 pm
Forum: Balancing Redox Reactions
Topic: Platinum in cell diagram
Replies: 10
Views: 80

Re: Platinum in cell diagram

Could you use other metals? Or only Pt?
by Katie Bart 1I
Mon Feb 24, 2020 10:49 pm
Forum: Balancing Redox Reactions
Topic: adding e-
Replies: 7
Views: 49

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?
by Katie Bart 1I
Tue Feb 18, 2020 12:13 pm
Forum: Van't Hoff Equation
Topic: Constant delta H
Replies: 4
Views: 36

Re: Constant delta H

Can we always assume that delta S naught is constant when using the Van't Hoff Equation?
by Katie Bart 1I
Tue Feb 18, 2020 12:07 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Delta G equations
Replies: 4
Views: 44

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.
by Katie Bart 1I
Tue Feb 18, 2020 12:02 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: ∆G = ∆Gº + RT lnQ
Replies: 12
Views: 110

Re: ∆G = ∆Gº + RT lnQ

Does the system have to be at equilibrium in order to use this equation?
by Katie Bart 1I
Tue Feb 18, 2020 11:58 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Van't Hoff Equation
Replies: 4
Views: 39

Van't Hoff Equation

When do you use the Van't Hoff Equation? And how does it relate to Gibbs Free Energy?
by Katie Bart 1I
Tue Feb 18, 2020 11:55 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Signs for Gibbs Free Energy
Replies: 11
Views: 90

Re: Signs for Gibbs Free Energy

It also helps me to think of the signs in terms of energy being absorbed and released.
by Katie Bart 1I
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: 24

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?
by Katie Bart 1I
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: 11

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.
by Katie Bart 1I
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: 16

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?
by Katie Bart 1I
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: 33

work/energy units

On the tests/midterm, should we put energy and work in units of J or KJ?
by Katie Bart 1I
Tue Feb 04, 2020 8:24 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: moles or grams in heat capacity equation
Replies: 3
Views: 20

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?
by Katie Bart 1I
Sat Feb 01, 2020 5:42 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: insignificance of pdeltav
Replies: 1
Views: 15

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?
by Katie Bart 1I
Sat Feb 01, 2020 5:39 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: entropy units
Replies: 2
Views: 18

entropy units

What are entropy's units?
by Katie Bart 1I
Sat Feb 01, 2020 5:38 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: using entropy
Replies: 1
Views: 19

using entropy

When exactly do we use entropy?
by Katie Bart 1I
Sat Feb 01, 2020 5:36 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: microstates
Replies: 3
Views: 34

microstates

What exactly is a microstate?
by Katie Bart 1I
Tue Jan 28, 2020 11:51 am
Forum: Phase Changes & Related Calculations
Topic: Change in Temperature
Replies: 10
Views: 48

Re: Change in Temperature

Also, a change in temperature is the only factor that will change the K value for a reaction.
by Katie Bart 1I
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: 31

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.
by Katie Bart 1I
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: 63

Re: Bond Enthalpies

Is calculating enthalpy from bond enthalpies more accurate?
by Katie Bart 1I
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: 31

delta H units

When is delta H written in kj versus kj/mol?
by Katie Bart 1I
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: 41

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?
by Katie Bart 1I
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: 143

Re: Le Chatelier's Principle

It's all about the reaction rebalancing after a physical change occurs.
by Katie Bart 1I
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: 28

van't hoff's equation

Do we need to know Van't Hoff's equation for this test?
by Katie Bart 1I
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: 127

exothermic reactions

Why does adding heat to an exothermic reaction favor the reactants?
by Katie Bart 1I
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: 80

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.
by Katie Bart 1I
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: 32

expanding the volume

Why does expanding the volume shift the reaction towards the side with more moles?
by Katie Bart 1I
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: 49

effects on pH

Why do conjugate bases/acids and group 1/2 cations not affect pH?
by Katie Bart 1I
Tue Jan 14, 2020 4:52 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: concentrations
Replies: 5
Views: 29

concentrations

Why does changing the concentration of the reactants have no effect on the K value?
by Katie Bart 1I
Tue Jan 14, 2020 4:37 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Autoprolysis
Replies: 9
Views: 112

Re: Autoprolysis

It's also important to remember that amphiprotic is different than amphoteric, which means that it reacts with both acids and bases.
by Katie Bart 1I
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: 61

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?
by Katie Bart 1I
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: 64

Re: "Quick way" part in Lecture

Does the quick way work every time? Or only in certain scenarios?
by Katie Bart 1I
Tue Jan 14, 2020 4:26 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pressure
Replies: 5
Views: 47

pressure

When does pressure affect the reactants/products of a reaction at equilibrium? Does it depend on the type of gas?
by Katie Bart 1I
Wed Jan 08, 2020 11:49 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K vs. Q
Replies: 10
Views: 77

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?
by Katie Bart 1I
Wed Jan 08, 2020 11:47 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Constant
Replies: 8
Views: 90

Re: Equilibrium Constant

How do you know whether to use Kc/Kp versus simply K? What is the difference?
by Katie Bart 1I
Wed Jan 08, 2020 11:46 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Multiples of Chemical Equation
Replies: 3
Views: 28

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.
by Katie Bart 1I
Wed Jan 08, 2020 11:44 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: solids/liquids
Replies: 4
Views: 40

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?
by Katie Bart 1I
Wed Jan 08, 2020 11:42 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: units of K
Replies: 10
Views: 68

units of K

Why does the equilibrium constant not have units?
by Katie Bart 1I
Tue Dec 03, 2019 10:47 am
Forum: Conjugate Acids & Bases
Topic: H-F in conjugate bases
Replies: 3
Views: 59

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?
by Katie Bart 1I
Tue Dec 03, 2019 10:40 am
Forum: Conjugate Acids & Bases
Topic: conjugate base and pH
Replies: 4
Views: 61

conjugate base and pH

Why doesn't the conjugate base of a strong acid affect pH?
by Katie Bart 1I
Tue Dec 03, 2019 10:36 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: weak acids/bases
Replies: 1
Views: 24

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.
by Katie Bart 1I
Tue Dec 03, 2019 10:34 am
Forum: Amphoteric Compounds
Topic: water
Replies: 4
Views: 39

water

How can you tell if water is acting as an acid or a base?
by Katie Bart 1I
Tue Dec 03, 2019 10:31 am
Forum: Naming
Topic: cations
Replies: 2
Views: 26

cations

Will a cation ever be within the coordination sphere of a coordination compound?
by Katie Bart 1I
Sun Nov 24, 2019 5:20 pm
Forum: Biological Examples
Topic: TMs' biological functions
Replies: 3
Views: 39

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?
by Katie Bart 1I
Sun Nov 24, 2019 5:17 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: en and edta
Replies: 1
Views: 15

en and edta

How does the solutions manual know that en is bidentate and edta is hexadentate?
by Katie Bart 1I
Sun Nov 24, 2019 5:16 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: chelating complexes
Replies: 2
Views: 32

chelating complexes

How do you know if a molecule is going to be chelating based off of its lewis structure?
by Katie Bart 1I
Sun Nov 24, 2019 5:13 pm
Forum: Naming
Topic: oxidation state equation
Replies: 2
Views: 32

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?
by Katie Bart 1I
Sun Nov 24, 2019 5:12 pm
Forum: Naming
Topic: Cobalt vs. Cobaltate
Replies: 4
Views: 36

Cobalt vs. Cobaltate

How do you know whether the name of a compound has, for example, cobalt versus cobaltate at the end of it?
by Katie Bart 1I
Thu Nov 21, 2019 10:47 am
Forum: Hybridization
Topic: hybridizing d orbitals
Replies: 7
Views: 60

hybridizing d orbitals

When d orbitals hybridize, what new orbital(s) do they form?
by Katie Bart 1I
Thu Nov 21, 2019 10:40 am
Forum: Hybridization
Topic: Knowing when hybridization occurs
Replies: 6
Views: 64

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?
by Katie Bart 1I
Thu Nov 21, 2019 10:34 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Hybridized increases or decreases
Replies: 3
Views: 247

Re: Hybridized increases or decreases

So do bond angles change when an atom is hybridized? Or does it just depend on the atom?
by Katie Bart 1I
Thu Nov 21, 2019 10:32 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Double/Triple Bonds in Coordination Compounds
Replies: 2
Views: 38

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?
by Katie Bart 1I
Thu Nov 21, 2019 10:31 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Number
Replies: 2
Views: 32

Coordination Number

Is the coordination number the number of bonds to the central atom or the total number of bonds in a molecule?
by Katie Bart 1I
Thu Nov 14, 2019 10:44 am
Forum: Octet Exceptions
Topic: existence of radicals
Replies: 1
Views: 89

existence of radicals

How do radicals exist? Isn't it extremely unstable for an atom to have an unpaired electron?
by Katie Bart 1I
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: 39

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?
by Katie Bart 1I
Thu Nov 14, 2019 10:40 am
Forum: Determining Molecular Shape (VSEPR)
Topic: molecular shape vs. molecular geometry
Replies: 4
Views: 42

molecular shape vs. molecular geometry

What is the difference between molecular shape and molecular geometry when using VSEPR?
by Katie Bart 1I
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: 117

Re: Intermolecular forces

You might also here London forces referred to as induced-dipole-induced-dipole interactions.
by Katie Bart 1I
Thu Nov 14, 2019 10:32 am
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR usage
Replies: 5
Views: 42

Re: VSEPR usage

Going off of the initial question, can interactions between molecules affect each molecule's shape?
by Katie Bart 1I
Thu Nov 14, 2019 10:30 am
Forum: Determining Molecular Shape (VSEPR)
Topic: bond angles
Replies: 10
Views: 104

bond angles

In VSEPR molecules that have varying bond angles between atoms, how do we know which angle degrees are where in the molecule?
by Katie Bart 1I
Wed Nov 06, 2019 5:01 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Electron configuration
Replies: 7
Views: 180

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.
by Katie Bart 1I
Wed Nov 06, 2019 4:59 pm
Forum: Electronegativity
Topic: definitions
Replies: 8
Views: 99

Re: definitions

Ionization energy and electron affinity do follow the same trends on the periodic table (even though they are two separate concepts).
by Katie Bart 1I
Wed Nov 06, 2019 4:58 pm
Forum: Electronegativity
Topic: Electron affinity
Replies: 4
Views: 39

Electron affinity

When do we use electron affinity? I feel like we use ionization energy a lot but rarely electron affinity.
by Katie Bart 1I
Wed Nov 06, 2019 4:56 pm
Forum: Electronegativity
Topic: Ionic or covalent?
Replies: 17
Views: 175

Re: Ionic or covalent?

Can a bond have both covalent and ionic properties?
by Katie Bart 1I
Wed Nov 06, 2019 4:55 pm
Forum: Dipole Moments
Topic: Dipole Moment Changing
Replies: 3
Views: 45

Dipole Moment Changing

Will the same molecule always have the same dipole moment or can the value change?
by Katie Bart 1I
Mon Oct 28, 2019 1:40 pm
Forum: Ionic & Covalent Bonds
Topic: Delocalized Bond
Replies: 4
Views: 40

Delocalized Bond

What is a delocalized bond? (A delocalized double bond in particular)
by Katie Bart 1I
Mon Oct 28, 2019 1:36 pm
Forum: Lewis Structures
Topic: Lone Pairs
Replies: 3
Views: 33

Re: Lone Pairs

I do that as well.
by Katie Bart 1I
Mon Oct 28, 2019 1:16 pm
Forum: Bond Lengths & Energies
Topic: Bond lengths
Replies: 15
Views: 183

Re: Bond lengths

Are double bonds always shorter than single bonds? Are there any exceptions?
by Katie Bart 1I
Mon Oct 28, 2019 1:13 pm
Forum: General Science Questions
Topic: Midterm
Replies: 1
Views: 37

Re: Midterm

I'm not sure, but I bet he will address it in class on Wednesday.
by Katie Bart 1I
Mon Oct 28, 2019 1:11 pm
Forum: Ionic & Covalent Bonds
Topic: Electron configuration for ions
Replies: 2
Views: 15

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?
by Katie Bart 1I
Tue Oct 22, 2019 9:46 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: KeV
Replies: 2
Views: 47

KeV

What is this unit? KeV
by Katie Bart 1I
Tue Oct 22, 2019 9:44 pm
Forum: DeBroglie Equation
Topic: When to use the DeBroglie Equation
Replies: 3
Views: 55

Re: When to use the DeBroglie Equation

Since p=mv, if you are given either mass or velocity (or both), use the DeBroglie Equation.
by Katie Bart 1I
Tue Oct 22, 2019 9:43 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Energy of Electrons
Replies: 6
Views: 67

Re: Energy of Electrons

The energy of an electron does increase when it moves up an energy level.
by Katie Bart 1I
Tue Oct 22, 2019 9:38 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Subshell vs. Orbital
Replies: 9
Views: 117

Re: Subshell vs. Orbital

A subshell is determined by the l value, and an orbital is determined by the ml value.
by Katie Bart 1I
Tue Oct 22, 2019 9:35 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Problem 1B.27
Replies: 1
Views: 51

Problem 1B.27

In this problem why do we only use 5m/s as the velocity and disregard the uncertainty of + or - 5?
by Katie Bart 1I
Tue Oct 22, 2019 9:33 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: l values
Replies: 4
Views: 81

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?
by Katie Bart 1I
Wed Oct 16, 2019 11:34 am
Forum: Properties of Electrons
Topic: Photons
Replies: 9
Views: 118

Re: Photons

And when velocity changes, so does momentum since velocity is a component of momentum.
by Katie Bart 1I
Wed Oct 16, 2019 11:32 am
Forum: Properties of Electrons
Topic: Intensity vs. Energy
Replies: 10
Views: 118

Re: Intensity vs. Energy

So does the number of photons have an effect on frequency? Or only intensity?
by Katie Bart 1I
Wed Oct 16, 2019 11:25 am
Forum: Properties of Light
Topic: Next test
Replies: 23
Views: 340

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.
\
by Katie Bart 1I
Wed Oct 16, 2019 11:22 am
Forum: Photoelectric Effect
Topic: Equations and Formulas
Replies: 4
Views: 66

Re: Equations and Formulas

If you're dealing with momentum, you will use the third equation.
by Katie Bart 1I
Wed Oct 16, 2019 11:19 am
Forum: Properties of Light
Topic: Planck's Constant
Replies: 2
Views: 49

Planck's Constant

What are the units for Planck's constant again?
by Katie Bart 1I
Wed Oct 09, 2019 4:42 pm
Forum: Properties of Electrons
Topic: Energy of Electron
Replies: 10
Views: 156

Re: Energy of Electron

Is this also what "quantum theory" means? Like it refers to the discrete states in which electrons exist?
by Katie Bart 1I
Wed Oct 09, 2019 4:34 pm
Forum: Properties of Light
Topic: High Intensity
Replies: 5
Views: 64

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?
by Katie Bart 1I
Wed Oct 09, 2019 4:32 pm
Forum: Photoelectric Effect
Topic: Photon [ENDORSED]
Replies: 6
Views: 114

Re: Photon [ENDORSED]

How big is a photon in comparison to an electron?
by Katie Bart 1I
Wed Oct 09, 2019 4:28 pm
Forum: Properties of Electrons
Topic: electron energy [ENDORSED]
Replies: 7
Views: 178

electron energy [ENDORSED]

Does an electron lose energy when it moves up an energy level? Or does it just decrease?
by Katie Bart 1I
Wed Oct 09, 2019 4:24 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 4
Views: 70

Speed of Light

Does the speed of light constant only apply to a vacuum?
by Katie Bart 1I
Wed Oct 02, 2019 10:12 pm
Forum: Empirical & Molecular Formulas
Topic: Clarification on the Vitamin C Example
Replies: 6
Views: 106

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.
by Katie Bart 1I
Wed Oct 02, 2019 10:05 pm
Forum: Balancing Chemical Reactions
Topic: Combustion Reaction Notation
Replies: 6
Views: 89

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.

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