Search found 109 matches

by 805097738
Tue Jan 21, 2020 12:55 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: expanding the volume
Replies: 3
Views: 8

Re: expanding the volume

because the pressure is decreased and in order to minimize this change, the reaction reaction move towards the side with more moles so there is more pressure
by 805097738
Mon Jan 20, 2020 12:30 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pH sig figs
Replies: 5
Views: 35

Re: pH sig figs

One of the UAs said that the amount of sig figs in the problem is the amount of sig figs you place after the decimal for pH
by 805097738
Sun Jan 19, 2020 12:21 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q < K
Replies: 16
Views: 42

Re: Q < K

correct that is what that means. forward rxn favors the product
by 805097738
Sun Jan 19, 2020 12:20 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Test 1
Replies: 6
Views: 19

Re: Test 1

just the material from weeks one and two!
by 805097738
Sun Jan 19, 2020 12:18 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: 5% rule
Replies: 10
Views: 36

Re: 5% rule

because the change in x is so small, the original molarity of the molecule being changed by x is a suffice approximation.
by 805097738
Sun Jan 19, 2020 12:17 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Pressure
Replies: 5
Views: 12

Re: Pressure

it goes to the side with less moles.
by 805097738
Sun Jan 19, 2020 12:16 pm
Forum: Ideal Gases
Topic: R Constant
Replies: 7
Views: 18

Re: R Constant

Kimberly Koo 2I wrote:R is the universal gas constant, which is 0.082 L.atm/mol.K


there are different R constants for different units though
by 805097738
Sun Jan 19, 2020 12:14 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE Box
Replies: 4
Views: 7

Re: ICE Box

pure liquids and solids are not involved in the ice box so H20 wouldn't be involved in liquid form. However, it is when it is in gas form like the examples in class.
by 805097738
Sun Jan 19, 2020 12:10 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Different Values for K and Kc?
Replies: 3
Views: 13

Re: Different Values for K and Kc?

that is strange. I thought that K and Kc were the same. The only thing I can think of is if K were calculated in Pressure and than converted to Kc but I didn't do the math to test that. I also don't know why it would be calculated differently.
by 805097738
Thu Jan 16, 2020 1:00 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Autoprolysis
Replies: 8
Views: 33

Re: Autoprolysis

Wendy Perez 1E wrote:Adding to this conversation, what does amphiprotic mean again?


can accept or donate a proton
by 805097738
Thu Jan 16, 2020 12:58 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: How to make ICE box
Replies: 15
Views: 85

Re: How to make ICE box

the moles represent the amount of X that will change. If the molecules go into the eq the change is -, and if the molecules come out of the eq the change is +
by 805097738
Mon Jan 13, 2020 12:51 pm
Forum: Ideal Gases
Topic: Topics for Test 1
Replies: 17
Views: 78

Re: Topics for Test 1

The UA's said the material would cover up to this friday's class material so I would focus of the first two weeks of information. The lecture videos that Lavelle posted cover a lot of the information and have great practice problems!
by 805097738
Mon Jan 13, 2020 12:46 pm
Forum: Ideal Gases
Topic: ICE Table
Replies: 9
Views: 54

Re: ICE Table

You should calculate Q so you know which direction the reaction is moving and then you can identify if the products or reactants are favored to determine if x is positive or negative for each molecule
by 805097738
Mon Jan 13, 2020 12:43 pm
Forum: Ideal Gases
Topic: R constant
Replies: 6
Views: 22

R constant

When do we know when to use which R constant?

What are the two R constants and when are they used?

Is the unit for gas measured in atm pressure or bars?
by 805097738
Mon Jan 13, 2020 12:37 pm
Forum: Ideal Gases
Topic: Understanding Q
Replies: 19
Views: 67

Re: Understanding Q

To solve for Q we have to be given the values of each product and reactant, correct?
by 805097738
Mon Jan 13, 2020 12:34 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: What is this?
Replies: 21
Views: 102

Re: What is this?

This principle tries to minimize the effect of change by shifting the direction of the reaction in order to maintain equilibrium
by 805097738
Mon Jan 13, 2020 12:28 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Reaction shifts right or left?
Replies: 14
Views: 56

Re: Reaction shifts right or left?

Yes, if the reaction is shifted to the left that means that the are more moles on the left side of the reaction which are the reactants. While if the reaction is shifted to the right that means there are more moles on the right side of the reaction which are the products. if there are more moles on...
by 805097738
Mon Jan 13, 2020 12:24 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q=K
Replies: 14
Views: 34

Re: Q=K

Q doesn't have to be strictly not at equilibrium. It can be at any point in the reaction including equilibrium, K.
by 805097738
Mon Jan 13, 2020 12:21 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: PV=nRT
Replies: 9
Views: 22

Re: PV=nRT

have we gone over this in class in an example equation?
by 805097738
Thu Jan 09, 2020 7:06 pm
Forum: Ideal Gases
Topic: Understanding Q
Replies: 19
Views: 67

Re: Understanding Q

do you omit pure solids and liquids while solving for K too?
by 805097738
Thu Jan 09, 2020 6:55 pm
Forum: Ideal Gases
Topic: converting Kc to Kp
Replies: 13
Views: 72

Re: converting Kc to Kp

the volume is already included in the concentration as it is moles over volume
by 805097738
Wed Jan 08, 2020 8:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Sapling Learning
Replies: 9
Views: 46

Sapling Learning

Are the assignments on sapling learning mandatory? And if so, when are they due?
by 805097738
Wed Jan 08, 2020 7:42 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: HW 5I.5
Replies: 3
Views: 33

Re: HW 5I.5

correct it is just a unit
by 805097738
Wed Jan 08, 2020 1:24 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Effects of Concentration on Equilibrium
Replies: 6
Views: 40

Re: Effects of Concentration on Equilibrium

yes it will be temporarily shifted
by 805097738
Wed Jan 08, 2020 1:19 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K vs Kp vs Kc
Replies: 9
Views: 43

Re: K vs Kp vs Kc

K is the general term for equilibrium constant. Kp is for reaction involving gases and Kc is for reactions involving aqueous.
by 805097738
Tue Jan 07, 2020 6:24 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Expression for K
Replies: 4
Views: 25

Expression for K

Why d we have to put P in front of the molecules? for example= (P O2) + (P H4)
by 805097738
Mon Jan 06, 2020 7:24 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 5G.3
Replies: 8
Views: 55

Re: 5G.3

partial pressure is used because the reaction only involves gases
by 805097738
Fri Dec 06, 2019 9:43 pm
Forum: Identifying Acidic & Basic Salts
Topic: deciding whether the solution of a salt is basic, acidic, or neutral
Replies: 5
Views: 49

Re: deciding whether the solution of a salt is basic, acidic, or neutral

If, in the presence of water, a salt gains an H+ (becoming an acid) and produces OH- ions, the solution will be basic. If, in the presence of water, a salt loses an H+ (becoming a base) and produces H+ ions, the solution will be basic. <- you mean acidic??** ex: C2H3O2 (-) (aq) + H2O (l) ---> HC2H3...
by 805097738
Fri Dec 06, 2019 9:39 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Weak vs Strong acids and bases
Replies: 6
Views: 32

Re: Weak vs Strong acids and bases

a weak base will have a lower pH than a strong base
by 805097738
Fri Dec 06, 2019 6:46 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted Acids/Bases vs. Lewis Acids/Bases
Replies: 3
Views: 28

Re: Bronsted Acids/Bases vs. Lewis Acids/Bases

So bronsted and lewis acids and bases are the same thing just described differently based off of e- or H+ action?
by 805097738
Fri Dec 06, 2019 6:44 pm
Forum: Amphoteric Compounds
Topic: how to identify?
Replies: 5
Views: 70

Re: how to identify?

Compounds containing multiple hydrogen atoms are amphoteric since they can donate and accept hydrogens. For compounds that don't contain multiple hydrogens, we know that certain elements form amphoteric compounds. These elements include copper, zinc, tin, lead, aluminium, and beryllium, and they fo...
by 805097738
Sun Dec 01, 2019 10:33 am
Forum: Lewis Acids & Bases
Topic: 6A.13
Replies: 7
Views: 34

Re: 6A.13

because it has a positive charge it wants to accept electrons and electron pair acceptors are acids
by 805097738
Sun Dec 01, 2019 10:31 am
Forum: Identifying Acidic & Basic Salts
Topic: Final: Strong/ Weak Acids/Bases
Replies: 11
Views: 713

Re: Final: Strong/ Weak Acids/Bases

safe to memorize the strong acids and bases
by 805097738
Sun Dec 01, 2019 10:27 am
Forum: Polyprotic Acids & Bases
Topic: Section 6E.1
Replies: 2
Views: 26

Re: Section 6E.1

what is the problem 6E.1?
by 805097738
Sun Dec 01, 2019 10:24 am
Forum: Air Pollution & Acid Rain
Topic: Acid Rain
Replies: 15
Views: 1073

Re: Acid Rain

is this info necessary for the test?
by 805097738
Sun Dec 01, 2019 10:22 am
Forum: Calculating the pH of Salt Solutions
Topic: 6d11 7th edition
Replies: 3
Views: 267

Re: 6d11 7th edition

Linyu Zeng 1H wrote:You can whether the anions and cations will form bond with H atom or OH- in the water. For example, when Na2CO3 becomes Na+ and (CO3)2- in water, some of the (CO3)2- will form bond with H atom from water and become (HCO3)-, producing OH-. Thus, the solution should have a pH > 7.


always?
by 805097738
Mon Nov 25, 2019 8:53 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: strength of base
Replies: 8
Views: 251

Re: strength of base

Michael Torres 4I wrote:If something is a strong acid, then it will be a weaker base. Weaker acids will also be stronger bases.


how can acids be bases?
by 805097738
Mon Nov 25, 2019 8:35 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: chemical equation states
Replies: 2
Views: 30

Re: chemical equation states

are bases not all aq too?
by 805097738
Mon Nov 25, 2019 8:11 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: How do you know is an acid is strong or weak?
Replies: 6
Views: 50

Re: How do you know is an acid is strong or weak?

I think we just have to memorize the strong ones and realize the rest are considered weak.
by 805097738
Sat Nov 23, 2019 6:39 pm
Forum: *Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
Topic: Hydrogen Bonding/Pi bonds
Replies: 11
Views: 91

Re: Hydrogen Bonding/Pi bonds

Zoya Mulji 1F wrote:Intermolecular forces:
ionic bonding --> H-bonding --> dipole-dipole bonding --> induced dipole/London dispersion


is this ascending or descending in strength?
by 805097738
Fri Nov 22, 2019 8:39 am
Forum: *Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
Topic: Viscosity
Replies: 15
Views: 98

Re: Viscosity

Max Madrzyk Dis 4E wrote:The higher the viscosity the smoother the liquid flows so like honey would have lower viscosity than water.


I don't think this is correct.
by 805097738
Thu Nov 21, 2019 8:37 pm
Forum: Bond Lengths & Energies
Topic: Boiling Point
Replies: 7
Views: 72

Re: Boiling Point

so electrons with more electrons have stronger London forces?
by 805097738
Thu Nov 21, 2019 8:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 8
Views: 48

Re: Lone Pairs

repulsion of lone pairs affects the bond angles
by 805097738
Thu Nov 21, 2019 8:07 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Sigma and Pi Bonds
Replies: 15
Views: 79

Re: Sigma and Pi Bonds

how are we supposed to order bonds?
by 805097738
Thu Nov 21, 2019 8:02 pm
Forum: Hybridization
Topic: hybridization on the test?
Replies: 10
Views: 80

Re: hybridization on the test?

what do we need to know about pi and sigma bonds?
by 805097738
Sun Nov 17, 2019 10:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: vsepr angles
Replies: 10
Views: 47

Re: vsepr angles

is there a trick to help memorize this?
by 805097738
Sun Nov 17, 2019 10:25 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: SF4
Replies: 3
Views: 20

Re: SF4

does this mean the lone pair is place equally between the bonding atoms because its repulsion would create this positioning?
by 805097738
Sat Nov 16, 2019 12:27 pm
Forum: Hybridization
Topic: 2F.13
Replies: 2
Views: 30

Re: 2F.13

what is the molecule?
by 805097738
Fri Nov 15, 2019 9:44 am
Forum: *Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
Topic: Viscosity/Surface Tension
Replies: 4
Views: 48

Re: Viscosity/Surface Tension

higher surface tension higher viscosity
by 805097738
Thu Nov 14, 2019 4:36 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Induced dipoles
Replies: 7
Views: 313

Re: Induced dipoles

Are there other forms of dipoles?
by 805097738
Thu Nov 14, 2019 4:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: bond angles
Replies: 10
Views: 65

Re: bond angles

i'd memorize the examples that lavelle went over in class
by 805097738
Tue Nov 12, 2019 7:24 pm
Forum: *Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
Topic: Rod vs spherical shaped molecules
Replies: 8
Views: 56

Re: Rod vs spherical shaped molecules

Rod shaped molecules have more SA and higher boiling points than spherical molecules.
by 805097738
Tue Nov 12, 2019 7:22 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 5
Views: 24

Re: VSEPR

I think we should be able to derive the molecular shape but memorizing would help
by 805097738
Tue Nov 12, 2019 7:20 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: bond order
Replies: 4
Views: 244

Re: bond order

can someone explain what bond order is?
by 805097738
Tue Nov 12, 2019 7:19 pm
Forum: Dipole Moments
Topic: London forces
Replies: 4
Views: 22

Re: London forces

So London Forces are temporary?
by 805097738
Tue Nov 12, 2019 7:13 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Help of 3F.11
Replies: 5
Views: 34

Re: Help of 3F.11

I use the saying hydrogen bonds are FON (like fun) to remember that they occur with these atoms. this eliminates a b and c
by 805097738
Wed Nov 06, 2019 3:01 pm
Forum: DeBroglie Equation
Topic: 1B. 21
Replies: 5
Views: 72

Re: 1B. 21

the weight is given so you can calculate mass * delta v for delta p
by 805097738
Wed Nov 06, 2019 2:57 pm
Forum: Photoelectric Effect
Topic: Best way to study for this topic?
Replies: 8
Views: 101

Re: Best way to study for this topic?

i just keep doing practice problems to help memorize the procedure
by 805097738
Wed Nov 06, 2019 1:02 pm
Forum: Dipole Moments
Topic: How do i know if a molecule has a dipole moment?
Replies: 7
Views: 60

Re: How do i know if a molecule has a dipole moment?

A dipole moment is a charge separation that is caused by differences in electronegativity differences. Therefore, if the two atoms that are bonded together are the same element, they have the exact same electronegativity and will be non polar. Otherwise, if there is a difference in electronegativit...
by 805097738
Wed Nov 06, 2019 12:59 pm
Forum: Resonance Structures
Topic: Resonance Structure Midterm
Replies: 5
Views: 69

Re: Resonance Structure Midterm

It should state specifically all or one
by 805097738
Sat Nov 02, 2019 10:54 pm
Forum: Electronegativity
Topic: What is isoelectronic?
Replies: 13
Views: 55

Re: What is isoelectronic?

having the same number of electrons
by 805097738
Fri Nov 01, 2019 8:56 pm
Forum: Bond Lengths & Energies
Topic: Single bond vs double bond
Replies: 14
Views: 122

Re: Single bond vs double bond

double bonds are stronger, making their bond length shorter as the atoms are pulled closer together
by 805097738
Fri Nov 01, 2019 8:54 pm
Forum: Octet Exceptions
Topic: More than 8 valence e-
Replies: 8
Views: 61

Re: More than 8 valence e-

the d orbital allows these atoms to hold extra electrons
by 805097738
Fri Nov 01, 2019 9:49 am
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge equation
Replies: 9
Views: 44

Re: Formal Charge equation

I think you misunderstood what B represents. Your TA was probably referring to the number of bonds, which would work for the equation.
by 805097738
Thu Oct 31, 2019 7:19 am
Forum: Electronegativity
Topic: Electron Negativity vs affinity?
Replies: 5
Views: 29

Re: Electron Negativity vs affinity?

I don't think it's too important to know but as long as you know they follow the same trends and understand what they both mean that's all that needed to know
by 805097738
Thu Oct 31, 2019 7:16 am
Forum: Octet Exceptions
Topic: List of Octet exceptions
Replies: 6
Views: 49

Re: List of Octet exceptions

Natalie Benitez 1C wrote:Is there a limit on the number of electrons the exceptions to the octet rule can have?


I believe they tend to hold 10-12 electrons.
by 805097738
Thu Oct 31, 2019 7:12 am
Forum: Octet Exceptions
Topic: Radicals
Replies: 9
Views: 77

Re: Radicals

atoms with an unpaired electron are radicals
by 805097738
Tue Oct 29, 2019 6:27 pm
Forum: Resonance Structures
Topic: Delocalization
Replies: 6
Views: 53

Re: Delocalization

if they are delocalized they can move about the atoms when needed and don't have a strictly defined location
by 805097738
Mon Oct 28, 2019 4:04 pm
Forum: Lewis Structures
Topic: Expanded valence shells
Replies: 3
Views: 30

Re: Expanded valence shells

how do you know how many valence electrons atoms in the d block have
by 805097738
Mon Oct 28, 2019 3:59 pm
Forum: Lewis Structures
Topic: Orbitals
Replies: 9
Views: 57

Re: Orbitals

yes, you remove an electron from the highest energy shell
by 805097738
Mon Oct 28, 2019 1:52 pm
Forum: Lewis Structures
Topic: Lone Pairs
Replies: 3
Views: 25

Re: Lone Pairs

I place one dot on each side first and then start pairing up if there are more electrons.
by 805097738
Mon Oct 28, 2019 1:45 pm
Forum: Ionic & Covalent Bonds
Topic: valence electrons
Replies: 6
Views: 36

Re: valence electrons

yes because they are in the last shell
by 805097738
Sun Oct 27, 2019 9:58 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Chromium and Copper
Replies: 5
Views: 30

Re: Chromium and Copper

because a fully filled or half filled set of orbitals is more stable so an electron is taken from the higher energy level to make the 3d level more stable
by 805097738
Sat Oct 26, 2019 12:55 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Noble Gas Configuration
Replies: 10
Views: 72

Re: Noble Gas Configuration

I think it's safe to write in shorthand when the atom has an extremely high amount of electrons unless the question asks for the full electron configuration.
by 805097738
Sat Oct 26, 2019 12:52 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Resonance Hybrid
Replies: 2
Views: 20

Re: Resonance Hybrid

It is the average of the resonance structures and describes the bonding in a molecule. Resonance structures are used when one Lewis structure for a single molecule cannot fully describe the bonding that takes place between neighboring atoms relative to the empirical data for the actual bond lengths ...
by 805097738
Sat Oct 26, 2019 12:48 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configurations
Replies: 2
Views: 11

Re: Electron Configurations

3p comes before 4s because you fill up the orbitals with lower energy levels first and 3 id lower than 4
by 805097738
Fri Oct 25, 2019 9:34 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Noble Gas Configuration
Replies: 10
Views: 72

Re: Noble Gas Configuration

I used the noble gas short cut for atoms with a very high amount of electrons. The question should state if you need to write out the full configuration though.
by 805097738
Fri Oct 25, 2019 9:29 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configurations of ions
Replies: 4
Views: 22

Re: Electron Configurations of ions

the electron would be removed from the highest energy state.
by 805097738
Wed Oct 23, 2019 8:59 am
Forum: Quantum Numbers and The H-Atom
Topic: Yet Another Electron Spin Question
Replies: 5
Views: 70

Re: Yet Another Electron Spin Question

will this be necessary to know for the test?
by 805097738
Wed Oct 23, 2019 8:54 am
Forum: Quantum Numbers and The H-Atom
Topic: 1D. 23)
Replies: 5
Views: 53

Re: 1D. 23)

so if ml is given and it is one value, that represents one orbital?
by 805097738
Wed Oct 23, 2019 8:49 am
Forum: Quantum Numbers and The H-Atom
Topic: 1D.19
Replies: 6
Views: 44

Re: 1D.19

the number of orbitals is represented by the number of ml values
by 805097738
Mon Oct 21, 2019 10:12 am
Forum: *Shrodinger Equation
Topic: Calculating the probability of finding an electron at a certain location
Replies: 5
Views: 77

Re: Calculating the probability of finding an electron at a certain location

for finding the probable location of an electron you multiple the uncertainty in momentum x uncertainty in position and set it equal to or greater than planck's constant / 4pi. to find uncertainty in momentum you multiply mass of electron which is given x uncertainty in velocity which you should be ...
by 805097738
Mon Oct 21, 2019 10:04 am
Forum: *Shrodinger Equation
Topic: Hamiltonian
Replies: 6
Views: 43

Re: Hamiltonian

Will we be expected to calculate this?
by 805097738
Mon Oct 21, 2019 9:50 am
Forum: *Shrodinger Equation
Topic: Schrodinger equation
Replies: 4
Views: 35

Re: Schrodinger equation

it describes general placement of electrons in an atom with a wave function. Not sure what we will be using it for though.
by 805097738
Mon Oct 21, 2019 9:45 am
Forum: Properties of Electrons
Topic: Wave-like and particle-like properties
Replies: 7
Views: 44

Re: Wave-like and particle-like properties

yes but the larger the mass of the object, the more difficult it is to detect the wavelength
by 805097738
Mon Oct 21, 2019 9:44 am
Forum: Properties of Electrons
Topic: mass of electron, proton, neutron
Replies: 7
Views: 48

Re: mass of electron, proton, neutron

they will be on the equation sheet!
by 805097738
Sat Oct 19, 2019 9:54 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals in relation to arrows
Replies: 10
Views: 88

Re: Orbitals in relation to arrows

you know the direction of the spin indicated by the 1/2 or -1/2 number given. 1/2 is spin up and -1/2 is spin down. If there are 2 electrons in one orbital they will have opposite spins because they are paired.
by 805097738
Sat Oct 19, 2019 9:52 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: X,Y,and Z
Replies: 4
Views: 24

Re: X,Y,and Z

x, y, and z represent the 3 orbitals in the 2P subshell. these orbitals are filled up in the order of x,y,z for each first electron and then x,y,z again for the next round of electrons.
by 805097738
Wed Oct 16, 2019 9:36 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Indeterminacy Equation
Replies: 5
Views: 34

Re: Indeterminacy Equation

To locate the electron's location. However, because it is known we can't determine it's exact location, we use the uncertainty of it's position and momentum in order to determine the range of possible locations.
by 805097738
Wed Oct 16, 2019 9:33 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Building arguments on indeterminacy equation
Replies: 2
Views: 22

Re: Building arguments on indeterminacy equation

I think due to the electron's limitations relative to the nucleus we can predict the cloud of probable locations
by 805097738
Wed Oct 16, 2019 9:30 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Which equation to use for determining uncertainty?
Replies: 4
Views: 21

Re: Which equation to use for determining uncertainty?

(uncertainty in position)(uncertainty in momentum)> h/4(pi)

I'd use the formula he taught us in class as Lavelle teaches material and formulas relevant to his tests
by 805097738
Sun Oct 13, 2019 6:52 pm
Forum: DeBroglie Equation
Topic: Wave properties of electrons
Replies: 3
Views: 40

Re: Wave properties of electrons

1) yes
2) neutrons have wave-like properties
by 805097738
Fri Oct 11, 2019 8:53 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg Equation
Replies: 3
Views: 362

Re: Rydberg Equation

Rydberg Equation: 1/λ=R(1/n(1)^2−1/n(2)^2) You can change n(1) and n(2), which refer to different energy levels in the Hydrogen atom. For example, you can use n(1)= 1 and n(2)=2 to find the wavelength of light emitted when an electron drops from the n=2 to the n=1 energy levIel (or the wavelength o...
by 805097738
Fri Oct 11, 2019 8:45 am
Forum: Photoelectric Effect
Topic: Photoelectric Effect Intensity of Light
Replies: 7
Views: 51

Re: Photoelectric Effect Intensity of Light

intensity is related to number of photons.
more photons= higher intensity
by 805097738
Thu Oct 10, 2019 10:00 am
Forum: Properties of Light
Topic: Atomic Spectra
Replies: 7
Views: 65

Re: Atomic Spectra

Will we be expected to memorize this for any tests? How important is this information?
by 805097738
Wed Oct 09, 2019 10:04 am
Forum: Properties of Light
Topic: Light intensity
Replies: 10
Views: 74

Re: Light intensity

Leila_4E wrote:Is there a difference between the energy per photon and the threshold energy?


if the energy per photon is greater than the threshold energy, there will be excess energy.
by 805097738
Wed Oct 09, 2019 9:38 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Calculating Energy per Photon
Replies: 3
Views: 27

Calculating Energy per Photon

How would you go about solving this:

Calculate the energy per photon of ultraviolet radiation of frequency 3.00 x 1015 Hz.

Which formula(s) would be used?

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