Search found 52 matches

by 405289292
Mon Dec 02, 2019 5:18 pm
Forum: Polyprotic Acids & Bases
Topic: Defintion
Replies: 11
Views: 690

Re: Defintion

PriscillaLi_3G wrote:
Ethan Breaux 2F wrote:Is water then polyprotic?



Water is not a polyprotic acid because you would start considering it from H2O and not OH-


But in this case it would have 2 h+ ions to remove. Are we just to assume the oxygen can't loose both hydrogens in water?
by 405289292
Mon Dec 02, 2019 5:16 pm
Forum: Conjugate Acids & Bases
Topic: Strong vs Weak
Replies: 2
Views: 42

Strong vs Weak

What is the best way to identify what would make a strong/weak acid or strong/weak base based solely on what we see
by 405289292
Mon Dec 02, 2019 5:10 pm
Forum: Calculating the pH of Salt Solutions
Topic: 6D.11 F
Replies: 2
Views: 73

Re: 6D.11 F

Why is that the answer? It doesn't make sense to me.
by 405289292
Mon Dec 02, 2019 5:08 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Conjugate Seesaw [ENDORSED]
Replies: 2
Views: 92

Conjugate Seesaw [ENDORSED]

What is conjugate seesaw, and will it be on the 14A final?
by 405289292
Mon Dec 02, 2019 5:05 pm
Forum: Conjugate Acids & Bases
Topic: Identifying Acids and Bases
Replies: 1
Views: 44

Identifying Acids and Bases

Is there anyway to identify a Lewis acid/base from a bronsted acid/base without them being specified.
by 405289292
Sat Nov 23, 2019 2:51 pm
Forum: Lewis Acids & Bases
Topic: Lewis Acids
Replies: 1
Views: 44

Lewis Acids

Lewis bases have specific names like Ligand, but is there a specific name for Lewis acids?
by 405289292
Sat Nov 23, 2019 2:47 pm
Forum: Resonance Structures
Topic: Resonance and Naming
Replies: 11
Views: 303

Resonance and Naming

Does resonance have the potential to affect the way we name chemical compounds?
by 405289292
Sat Nov 23, 2019 2:46 pm
Forum: Biological Examples
Topic: Biological Examples
Replies: 10
Views: 90

Biological Examples

Will biological examples be specific information we need to know for the final? Like is there a chance they show up?
by 405289292
Sat Nov 23, 2019 2:45 pm
Forum: Naming
Topic: Naming Rules
Replies: 2
Views: 63

Naming Rules

Can anyone give a concise list of naming rules, my in class notes got cluttered and I want to be able to sort them out and have one general list.
by 405289292
Sat Nov 23, 2019 2:44 pm
Forum: Bronsted Acids & Bases
Topic: Naming Acids and Bases
Replies: 2
Views: 39

Naming Acids and Bases

Will we have to use the naming rules for acids and bases?
by 405289292
Mon Nov 18, 2019 3:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 2
Views: 48

Bond Angles

Will we have to know all of the bond angles for every structure for the quiz?
by 405289292
Mon Nov 18, 2019 3:39 pm
Forum: Hybridization
Topic: DSP^3
Replies: 1
Views: 32

DSP^3

How come D is listed first in this label and not S?
by 405289292
Mon Nov 18, 2019 3:39 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Formal Charge
Replies: 2
Views: 23

Formal Charge

Do we still need to take into account formal charge for VSEPRS? Because The expanded octet molecules seem to not do that.
by 405289292
Mon Nov 18, 2019 3:38 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar VSEPR's
Replies: 1
Views: 24

Polar VSEPR's

Do specific atoms always have the same electronegativity and therefore pull on any atom with the same force? Like say for example there is a CO2 molecule, would the pull of the oxygens be equal on both sides, making it non polar?
by 405289292
Mon Nov 18, 2019 3:28 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2 VSEPR's
Replies: 2
Views: 47

2 VSEPR's

Can a molecule be comprised of 2 VSEPR's? If so, would we make the distinction for both or is there a specific name for them?
by 405289292
Mon Nov 11, 2019 10:28 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizing Power
Replies: 6
Views: 134

Re: Polarizing Power

Tiffany Dong_4e wrote:A cation's ability to distort an anion's electron cloud is polarizing power. Polarizability is the tendency of a cation to be affected by an anion's polarizing power.

And so basically does this mean that a there is more covalent properties in the ionic bond?
by 405289292
Mon Nov 11, 2019 10:16 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizing Power
Replies: 6
Views: 134

Polarizing Power

Can someone define polarizability and polarizing power please? I am still slightly confused and want to be sure I have it down for the upcoming quiz/final.
by 405289292
Mon Nov 11, 2019 10:14 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: Solids, Liquids and Gases
Replies: 2
Views: 43

Solids, Liquids and Gases

Are there any relevant exceptions to the idea that at a specific temperature, strong bonds will result is something being more solid when compared to something with weak bonds?
by 405289292
Mon Nov 11, 2019 10:11 pm
Forum: Lewis Structures
Topic: Test Questions regarding Electronegativity
Replies: 2
Views: 50

Test Questions regarding Electronegativity

If we get a test question regarding which atom has more ionic properties and it seems that there could be a similar electronegativity difference, will we be given a chart?
by 405289292
Mon Nov 11, 2019 10:10 pm
Forum: Lewis Structures
Topic: Center of a Lewis Structure
Replies: 7
Views: 100

Center of a Lewis Structure

For the sake of this class, should we assume that the atom with the lowest ionization energy is in the middle of the Lewis structure?
by 405289292
Mon Nov 11, 2019 10:04 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: Induced Dipole/ Induced Dipole
Replies: 4
Views: 55

Induced Dipole/ Induced Dipole

Are the induce/induced intermolecular forces just another term for Van Der Waals forces or is there a distinction?
by 405289292
Mon Nov 04, 2019 4:10 pm
Forum: Ionic & Covalent Bonds
Topic: Bond Lengths
Replies: 4
Views: 70

Bond Lengths

Will we have to know how to calculate bond lengths or need to memorize any bond lengths for the midterm?
by 405289292
Mon Nov 04, 2019 4:04 pm
Forum: Dipole Moments
Topic: Interactions between Ions and Molecules
Replies: 5
Views: 67

Interactions between Ions and Molecules

In the chart we made in week 5 on Friday, on the interactions between ions and molecules, there are certain energy values labelled and I don't understand what they mean, can someone help?
by 405289292
Mon Nov 04, 2019 4:01 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Highly Polarized
Replies: 2
Views: 42

Highly Polarized

What does highly polarized mean in terms of ionic bonds being more or less covalent?
by 405289292
Mon Nov 04, 2019 4:00 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Large Anion + Small Cation
Replies: 2
Views: 65

Large Anion + Small Cation

Are large anions more covalent when paired to small cations?
by 405289292
Mon Nov 04, 2019 3:56 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge
Replies: 9
Views: 110

Formal Charge

Does formal charge have to be zero, or are we trying to get as many elements to a formal charge of zero as possible?
by 405289292
Mon Oct 28, 2019 4:40 pm
Forum: Trends in The Periodic Table
Topic: Ionization Energy
Replies: 3
Views: 39

Ionization Energy

Is it possible that the first ionization energy of any atom could be more than the second? I'm just wanting to clarify for my notes.
by 405289292
Mon Oct 28, 2019 4:39 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbital Shapes
Replies: 1
Views: 36

Orbital Shapes

Two questions technically, but are orbital shapes going to be something we need to know how to draw, and is there a possibility that we will need to know the shapes of orbitals beyond the 4 we were shown in class?
by 405289292
Mon Oct 28, 2019 4:37 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: The Wrong Rydberg's Equation
Replies: 1
Views: 42

The Wrong Rydberg's Equation

If we show how we denoted the correct Rydberg equation into the wrong one (as specified in class), could we technically use it for the test?
by 405289292
Mon Oct 28, 2019 4:34 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Lanthanides and Actinides
Replies: 2
Views: 48

Lanthanides and Actinides

Will we need to know the electron configuration for Lanthanides and Actinides?
by 405289292
Mon Oct 28, 2019 4:28 pm
Forum: Trends in The Periodic Table
Topic: Noble Gas
Replies: 4
Views: 65

Noble Gas

Do all trends disregard noble gases or is there some that do?
by 405289292
Mon Oct 21, 2019 9:26 pm
Forum: DeBroglie Equation
Topic: Velocity
Replies: 13
Views: 396

Velocity

If we calculate a velocity for an electron, proton or neutron that is higher than the speed of light, should we assume we did something wrong, or is there possibility for this to be an answer and we have to say that this is "unreasonable?"
by 405289292
Mon Oct 21, 2019 9:23 pm
Forum: DeBroglie Equation
Topic: Protons and Electrons
Replies: 4
Views: 77

Protons and Electrons

Would a proton and a neutron have the same velocity if they had the same wavelength?
by 405289292
Mon Oct 21, 2019 9:18 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Hw 1B.27
Replies: 3
Views: 88

Re: Hw 1B.27

The reason you still got the same answer is because it just so happened that the indeterminacy of the velocity ended up being the same as the starting point of the velocity, if that makes sense. You are supposed to use the 5.00+_ but because it was plus or minus 5 m/s around 5m/s, it still worked be...
by 405289292
Mon Oct 21, 2019 9:14 pm
Forum: Properties of Electrons
Topic: Diffraction Patterns for Electrons
Replies: 3
Views: 36

Diffraction Patterns for Electrons

I'm assuming that electrons have diffraction patterns because they have wave properties, but I just want to clarify that that is the case
by 405289292
Mon Oct 21, 2019 8:57 pm
Forum: Properties of Electrons
Topic: Diffraction Patterns
Replies: 2
Views: 52

Diffraction Patterns

Are diffraction patterns caused by the holes in the barrier the electrons are flying at, or does something else cause them?
by 405289292
Mon Oct 14, 2019 8:10 pm
Forum: DeBroglie Equation
Topic: DeBroglie
Replies: 3
Views: 47

DeBroglie

I am still sort of confused, what is debroglies equation and what is it describing?
by 405289292
Mon Oct 14, 2019 8:07 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Wavelength Emission
Replies: 1
Views: 35

Wavelength Emission

Why does the movement from n=7 to n=6 have a longer photon wavelength emission than n=4 to n=3
by 405289292
Mon Oct 14, 2019 8:05 pm
Forum: Photoelectric Effect
Topic: Energy per Photon
Replies: 4
Views: 91

Energy per Photon

Can anyone help me solve this problem? -"In 1.0 s, a 60 W bulb emits 11 J of energy in the form of infrared radiation (heat) of wavelength 1850 nm. What is the energy per photon of light emitted?
 How many photons of infrared radiation does the lamp generate in 1.0 s?"
by 405289292
Mon Oct 14, 2019 8:03 pm
Forum: DeBroglie Equation
Topic: Neutron Diffraction
Replies: 1
Views: 31

Neutron Diffraction

Do neutrons have a diffraction pattern when passing through a crystal?
by 405289292
Mon Oct 14, 2019 8:01 pm
Forum: DeBroglie Equation
Topic: Diffraction Patterns
Replies: 5
Views: 69

Diffraction Patterns

Do interacting waves give rise to diffraction patterns?
by 405289292
Sun Oct 06, 2019 5:18 pm
Forum: Photoelectric Effect
Topic: Conditions for the Photoelectric Experiment
Replies: 2
Views: 32

Re: Conditions for the Photoelectric Experiment

I don't know what kind of answer you are looking for (specific or general), but doing experiments in a vacuum decreases the possibilities for error and interference. Photons always move at the speed of light in a vacuum, so doing an experiment outside a vacuum would change that. Ahh ok thank you Ad...
by 405289292
Sun Oct 06, 2019 5:17 pm
Forum: Properties of Light
Topic: Incident Light
Replies: 2
Views: 29

Incident Light

What is incident light? I saw it in one of the post-assessment problems and don't know a term that is synonymous with it, especially because I don't remember it ever being said in the video.
by 405289292
Sun Oct 06, 2019 5:15 pm
Forum: Einstein Equation
Topic: Kinetic Energy
Replies: 3
Views: 73

Kinetic Energy

What equation would I use to solve this problem? Light hits a sodium metal surface and the velocity of the ejected electron is 6.61 x 105 m.s-1. The work function for sodium is 150.6 kJ.mol-1. 
What is the kinetic energy of the ejected electron?
by 405289292
Sun Oct 06, 2019 5:12 pm
Forum: Einstein Equation
Topic: Energy Problem
Replies: 4
Views: 146

Energy Problem

Does anyone know how to solve this problem: Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 1015 s-1 before it can emit an electron from its surface. What is the minimum energy needed to produce this effect?
by 405289292
Sun Oct 06, 2019 5:02 pm
Forum: Photoelectric Effect
Topic: Conditions for the Photoelectric Experiment
Replies: 2
Views: 32

Conditions for the Photoelectric Experiment

Why does the photoelectric experiment need to be done under a vacuum?
by 405289292
Sun Oct 06, 2019 5:00 pm
Forum: Einstein Equation
Topic: Wavelengths
Replies: 5
Views: 122

Wavelengths

Can anyone help me solve this problem? I'm really stuck: If 3.607 x 10-19 J is required to remove an electron with zero kinetic energy from a metal surface, what would be the longest wavelength light that could do this?
by 405289292
Thu Oct 03, 2019 3:10 pm
Forum: Limiting Reactant Calculations
Topic: 2 Limiting Reagents
Replies: 5
Views: 72

2 Limiting Reagents

What if both reactants produce the same amount of product? What would that be called? Can a reaction have two limiting reactants? I don't believe that the last question is possible, but I would just like clarification.
by 405289292
Thu Oct 03, 2019 3:08 pm
Forum: Empirical & Molecular Formulas
Topic: Law of Conservation of Mass?
Replies: 4
Views: 75

Law of Conservation of Mass?

Can anyone help me further understand this problem: 5 g of reactant A reacts with 7 g of reactant B to produce 14 g of product. Is this possible?
by 405289292
Thu Oct 03, 2019 3:07 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reagent Ratios
Replies: 4
Views: 90

Limiting Reagent Ratios

For limiting reagents problems, what are other methods of determining how to set up the reactant ratio to see which is limiting (if the balanced equation has a weird reactant ratio like 4:5)?
by 405289292
Thu Oct 03, 2019 3:06 pm
Forum: Balancing Chemical Reactions
Topic: Net Moles
Replies: 2
Views: 82

Net Moles

I understand how to balance the chemical equation but how do we calculate the net moles in this problem? During a summer camping weekend 4 moles of butane (C4H10) gas were used for cooking. Chose the right balanced equation for the combustion of 4 moles of butane gas. What is the net number of moles...
by 405289292
Thu Oct 03, 2019 3:05 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Homework Problem Help
Replies: 1
Views: 61

Empirical Homework Problem Help

Can anyone help me solve this problem: 339.20 g of a cobalt metal is reacted with fluorine gas to produce 996.08 g of a compound. What is the empirical formula of the new compound?

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