Search found 52 matches

by Lauren Sanchez 3D
Sun Dec 08, 2019 1:12 am
Forum: Air Pollution & Acid Rain
Topic: Acid Rain
Replies: 5
Views: 161

Re: Acid Rain

To what extent will this possibly be on the final?
by Lauren Sanchez 3D
Sun Dec 08, 2019 1:03 am
Forum: Calculating the pH of Salt Solutions
Topic: pH vs. pOH
Replies: 17
Views: 247

Re: pH vs. pOH

To add on, pH + pOH = 14
by Lauren Sanchez 3D
Sun Dec 08, 2019 1:01 am
Forum: Identifying Acidic & Basic Salts
Topic: weak bases produce acidic solutions?
Replies: 3
Views: 92

Re: weak bases produce acidic solutions?

So a strong acid and weak base will produce an acidic solution while a weak acid and strong base will produce a basic solution?
by Lauren Sanchez 3D
Sun Dec 08, 2019 12:57 am
Forum: Polyprotic Acids & Bases
Topic: How can you tell if an acid/base is polyprotic?
Replies: 5
Views: 120

Re: How can you tell if an acid/base is polyprotic?

I remember hearing about the term amphiprotic. What is the difference between amphiprotic and polyprotic?
by Lauren Sanchez 3D
Sun Dec 08, 2019 12:53 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Weak Acids
Replies: 4
Views: 50

Re: Weak Acids

So if an equation has the double arrows, then it is a weak acid, but if the arrow is only one way, then it is a strong acid?
by Lauren Sanchez 3D
Sun Dec 01, 2019 9:25 pm
Forum: Calculating the pH of Salt Solutions
Topic: calculating pH
Replies: 4
Views: 264

Re: calculating pH

We will only have to calculate the pH for strong acids and bases.
by Lauren Sanchez 3D
Sun Dec 01, 2019 9:19 pm
Forum: Lewis Acids & Bases
Topic: Donating Proton vs Accepting Electron
Replies: 4
Views: 48

Re: Donating Proton vs Accepting Electron

Being a proton donor and an electron acceptor are the same thing because once the acid donates or loses a proton, it can then accept an electron pair.
by Lauren Sanchez 3D
Sun Dec 01, 2019 9:08 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: Ionization in Water
Replies: 8
Views: 493

Re: Ionization in Water

ryanhon2H wrote:Strong bases fully dissociate in water, while weak bases only partially dissociate, as the strength of the base depends on its ability to fully dissociate.

Is this why the balanced equation for strong acids have a one-way arrow while weak acids have a two-way arrow?
by Lauren Sanchez 3D
Sun Dec 01, 2019 8:54 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: The pH Scale
Replies: 7
Views: 108

Re: The pH Scale

Sadhana_Dicussion_4A wrote:I think all we need to know is pH<7 is considered to be an acid, pH>7 is considered to be a base, and pH=7 is considered neutral. Also, I think we should know how to find the pH of a solution given the concentration, and vice versa.

How do we find the pH of a solution given the concentration?
by Lauren Sanchez 3D
Sun Dec 01, 2019 8:52 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Inorganic or Organic
Replies: 6
Views: 54

Re: Inorganic or Organic

Organic acids have carbon while inorganic acids do not have carbon.
by Lauren Sanchez 3D
Sun Nov 24, 2019 11:17 pm
Forum: Biological Examples
Topic: Cisplatin
Replies: 17
Views: 271

Re: Cisplatin

Cisplatin stops the growth of cancer cells, but not exclusively, so it would also stop the growth of healthy cells.
by Lauren Sanchez 3D
Sun Nov 24, 2019 11:14 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands
Replies: 4
Views: 42

Re: Ligands

How do we know which is the acid or base?
by Lauren Sanchez 3D
Sun Nov 24, 2019 11:11 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Chelate
Replies: 4
Views: 30

Re: Chelate

A chelate complex is when there are two or more separate coordinate bonds between a polydentate ligand and a single central atom.
by Lauren Sanchez 3D
Sun Nov 24, 2019 11:02 pm
Forum: Naming
Topic: Di-, Tri-, Tetra- vs Bis-, Tris-, Tetrakis-
Replies: 11
Views: 119

Re: Di-, Tri-, Tetra- vs Bis-, Tris-, Tetrakis-

kpang_4H wrote:
Bilal Pandit 3F wrote:They are used when the ligand has a prefix itself, so the ligand would have a di, tri, etc, so instead of saying didi, you would just say dis.

How do you know which is the ligand?

I believe that the ligands are the atoms that surround the transition metal.
by Lauren Sanchez 3D
Sun Nov 24, 2019 10:59 pm
Forum: Naming
Topic: Roman Numerals
Replies: 3
Views: 36

Re: Roman Numerals

The roman numeral comes from the oxidation state of the transition metal.
by Lauren Sanchez 3D
Sun Nov 17, 2019 2:52 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 6
Views: 48

Re: VSEPR

chari_maya 3B wrote:Why are different strength bonds treated the same when applying VSEPR?

I think it has to do with the idea that the electrons account for one region of electron density, as in the bond strength does not matter as much as how many actual regions of electron density a molecule has.
by Lauren Sanchez 3D
Sun Nov 17, 2019 2:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Angles to know for test 2
Replies: 3
Views: 44

Re: Angles to know for test 2

Do we need to know the angle degrees for all of the shapes as well?
by Lauren Sanchez 3D
Sun Nov 17, 2019 2:46 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: regions of electron density
Replies: 10
Views: 67

Re: regions of electron density

Regions of electron density include bonding pairs as well as lone pairs.
by Lauren Sanchez 3D
Sun Nov 17, 2019 2:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Structure of H2O
Replies: 3
Views: 39

Re: Structure of H2O

So if there are only two areas of electron density, that is when they are opposite of each other due to the strong repulsion?
by Lauren Sanchez 3D
Sun Nov 17, 2019 2:35 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR notation
Replies: 8
Views: 73

Re: VSEPR notation

NO3- would have the notation AX3 because the central atom has 3 atoms bonded to it. If there are any lone pair e-, then the E part of the notation would have to be used.
by Lauren Sanchez 3D
Sun Nov 17, 2019 2:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Trigonal Pyramidal?
Replies: 4
Views: 34

Re: Trigonal Pyramidal?

In this compound, is it trigonal pyramidal because even though there are 4 regions of e- density, one of the regions is a lone pair?
by Lauren Sanchez 3D
Thu Nov 07, 2019 10:18 pm
Forum: Lewis Structures
Topic: Radicals
Replies: 5
Views: 111

Re: Radicals

Are there atoms that commonly are radicals? Or can any atom be a radical?
by Lauren Sanchez 3D
Thu Nov 07, 2019 10:15 pm
Forum: Dipole Moments
Topic: Clarification on Dipole Moment
Replies: 3
Views: 38

Re: Clarification on Dipole Moment

How do you draw a dipole moment?
by Lauren Sanchez 3D
Thu Nov 07, 2019 10:11 pm
Forum: Electronegativity
Topic: ionic character
Replies: 9
Views: 170

Re: ionic character

So if the difference in electronegativity is greater than 2, then the bond is ionic?
by Lauren Sanchez 3D
Thu Nov 07, 2019 10:03 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge Equation?
Replies: 12
Views: 75

Re: Formal Charge Equation?

Victoria Otuya 4F wrote:I learned an easier way to remember the formal charge equation: valence electron -(dots + line).

That is a really good way to remember it!
by Lauren Sanchez 3D
Thu Nov 07, 2019 9:55 pm
Forum: Bond Lengths & Energies
Topic: Why Are Double Bonds Shorter
Replies: 16
Views: 307

Re: Why Are Double Bonds Shorter

So triple bonds pull the nuclei even closer then? Which then makes them even stronger than double bonds?
by Lauren Sanchez 3D
Sun Nov 03, 2019 11:09 pm
Forum: Resonance Structures
Topic: Showing resonance
Replies: 8
Views: 72

Re: Showing resonance

What about the example where we just drew a pentagon with a circle in the middle? Could that work?
by Lauren Sanchez 3D
Sun Nov 03, 2019 11:07 pm
Forum: Octet Exceptions
Topic: Expanded Valence Shells
Replies: 4
Views: 42

Re: Expanded Valence Shells

Is this why some elements end up breaking the octet rule?
by Lauren Sanchez 3D
Sun Nov 03, 2019 11:05 pm
Forum: Octet Exceptions
Topic: Octet Exceptions
Replies: 7
Views: 96

Re: Octet Exceptions

Midori Hupfeld 3D wrote:And, we learned that radicals are also an exception to the octet because they have an odd number of electrons (unpaired electrons).

Does this mean that radicals are more reactive then?
by Lauren Sanchez 3D
Sun Nov 03, 2019 11:02 pm
Forum: Ionic & Covalent Bonds
Topic: Valence electrons of transition metals
Replies: 2
Views: 62

Re: Valence electrons of transition metals

I remember seeing that the valence electron count for some elements repeat or skip a count, which ones would that be?
by Lauren Sanchez 3D
Sun Nov 03, 2019 11:00 pm
Forum: Ionic & Covalent Bonds
Topic: covalent character
Replies: 4
Views: 47

Re: covalent character

What is the difference between ionic and covalent bonds?
by Lauren Sanchez 3D
Sun Oct 27, 2019 11:51 pm
Forum: Resonance Structures
Topic: Formal Charge
Replies: 5
Views: 71

Re: Formal Charge

No, I do not think so
by Lauren Sanchez 3D
Sun Oct 27, 2019 11:48 pm
Forum: Resonance Structures
Topic: Resonance Structure meaning
Replies: 6
Views: 49

Re: Resonance Structure meaning

So is the resonance structure the average of all the possible lewis structures for a certain bond?
by Lauren Sanchez 3D
Sun Oct 27, 2019 11:45 pm
Forum: Lewis Structures
Topic: 2 Odd Configurations
Replies: 4
Views: 40

Re: 2 Odd Configurations

What are the odd configurations that we should know?
by Lauren Sanchez 3D
Sun Oct 27, 2019 11:44 pm
Forum: Lewis Structures
Topic: Choosing the central atom
Replies: 16
Views: 157

Re: Choosing the central atom

Just to clarify, what are the periodic trends for ionization energy?
by Lauren Sanchez 3D
Sun Oct 27, 2019 11:39 pm
Forum: Ionic & Covalent Bonds
Topic: Confusion with covalent
Replies: 3
Views: 33

Re: Confusion with covalent

I believe it is because a noble-gas configuration of electrons is the most stable for an atom to have.
by Lauren Sanchez 3D
Sun Oct 20, 2019 4:25 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Purpose of the Equation
Replies: 9
Views: 89

Re: Purpose of the Equation

So as the uncertainty of one variable goes up, the other goes down?
by Lauren Sanchez 3D
Sun Oct 20, 2019 4:23 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: What does the H mean?
Replies: 9
Views: 72

Re: What does the H mean?

The H refers to Planck's Constant, which is equal to 6.626 x 10^-34 Js.
by Lauren Sanchez 3D
Sun Oct 20, 2019 4:17 pm
Forum: Photoelectric Effect
Topic: One photon one atom interaction
Replies: 14
Views: 161

Re: One photon one atom interaction

So in order for the electron to be ejected, the frequency of the light has to be enough? The intensity does not matter if the frequency is not high enough right?
by Lauren Sanchez 3D
Sun Oct 20, 2019 3:53 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Spin up and spin down
Replies: 13
Views: 179

Re: Spin up and spin down

How do we figure out if the electron spins up or spins down?
by Lauren Sanchez 3D
Sun Oct 20, 2019 3:46 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Nodal Plane
Replies: 3
Views: 31

Re: Nodal Plane

Does the Nodal Plane represent the graph of the orbital functions?
by Lauren Sanchez 3D
Sun Oct 13, 2019 10:19 pm
Forum: DeBroglie Equation
Topic: DeBroglie Equation
Replies: 9
Views: 125

Re: DeBroglie Equation

So, De Broglie's equation can only be applied to things that have a mass and velocity (p)?
by Lauren Sanchez 3D
Sun Oct 13, 2019 10:17 pm
Forum: DeBroglie Equation
Topic: wavelike vs particle-like
Replies: 2
Views: 57

Re: wavelike vs particle-like

Having wavelike properties means that the particle behaves like a wave. I am not sure what particle-like properties refer to though.
by Lauren Sanchez 3D
Sun Oct 13, 2019 10:13 pm
Forum: DeBroglie Equation
Topic: Concept of a wave
Replies: 7
Views: 110

Re: Concept of a wave

So, if a particle has wavelike properties, then the particle itself is somewhat moving in a wave pattern?
by Lauren Sanchez 3D
Sun Oct 13, 2019 10:01 pm
Forum: Properties of Light
Topic: When to use the Planck's Constant?
Replies: 6
Views: 46

Re: When to use the Planck's Constant?

i believe that Planck's Constant (h) is also used in De Broglie's Wave Equation
by Lauren Sanchez 3D
Sun Oct 13, 2019 9:58 pm
Forum: Properties of Light
Topic: Photons
Replies: 4
Views: 51

Re: Photons

When talking about photons, they are quantized right? And that means that they are counted as whole numbers rather than values like 2.5 or 3.67 etc.?
by Lauren Sanchez 3D
Sun Oct 06, 2019 11:03 pm
Forum: General Science Questions
Topic: temperature
Replies: 4
Views: 104

Re: temperature

Will questions regarding temperature be on the first test?
by Lauren Sanchez 3D
Sun Oct 06, 2019 11:02 pm
Forum: General Science Questions
Topic: Order of Elements When Writing Out a Compound
Replies: 8
Views: 176

Re: Order of Elements When Writing Out a Compound

I was also a little confused with this topic too, but I was informed that the question itself can present the elements in the correct order already (at least for this first test)
by Lauren Sanchez 3D
Sun Oct 06, 2019 10:57 pm
Forum: General Science Questions
Topic: Periodic Table
Replies: 5
Views: 110

Re: Periodic Table

Will we receive a periodic table to use during the tests?
by Lauren Sanchez 3D
Sun Oct 06, 2019 10:54 pm
Forum: Administrative Questions and Class Announcements
Topic: First Test in Discussion
Replies: 13
Views: 260

Re: First Test in Discussion

Thank you all for the information on what to study for the first test!
by Lauren Sanchez 3D
Sun Oct 06, 2019 10:47 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 3186

Re: Week 2 Homework Problems [ENDORSED]

Just to make sure, the homework problems are now due during our actual discussions right?
by Lauren Sanchez 3D
Sun Oct 06, 2019 10:43 pm
Forum: Limiting Reactant Calculations
Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
Replies: 68
Views: 3163

Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]

My TA also said that an incorrect answer could still receive some partial credit with the correct work/steps, so I think it is a good idea to show work.

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