Search found 65 matches

by jlinwashington1B
Tue Jul 30, 2019 5:04 pm
Forum: Dipole Moments
Topic: Effect of size [ENDORSED]
Replies: 7
Views: 503

Re: Effect of size [ENDORSED]

so does this have anything to do with electronegativity?
by jlinwashington1B
Tue Jul 30, 2019 4:58 pm
Forum: Dipole Moments
Topic: dipole moments
Replies: 2
Views: 169

dipole moments

Do dipole moments determine where electron density is greater?
by jlinwashington1B
Sun Jul 28, 2019 9:34 pm
Forum: Bronsted Acids & Bases
Topic: (am)
Replies: 3
Views: 200

Re: (am)

What is a solvent
by jlinwashington1B
Sun Jul 28, 2019 9:30 pm
Forum: Lewis Acids & Bases
Topic: Acids & Bases
Replies: 4
Views: 196

Acids & Bases

Can somebody help me understand the correlations between Acids and bases and how to apply them into chemical concepts?
by jlinwashington1B
Tue Jul 16, 2019 2:07 pm
Forum: Hybridization
Topic: hybridization
Replies: 2
Views: 236

Re: hybridization

Thank You
by jlinwashington1B
Tue Jul 16, 2019 1:39 pm
Forum: Sigma & Pi Bonds
Topic: Which bond would break first.
Replies: 15
Views: 550

Re: Which bond would break first.

How would we be able to distinguish between the two? I know pie bonds show polarity, but I need a bit more clarification of sigma bonds>
by jlinwashington1B
Tue Jul 16, 2019 1:05 pm
Forum: Dipole Moments
Topic: Charges
Replies: 1
Views: 202

Charges

If there are two negative charges, or two positive charges what does that mean in regards to dipole moments?
by jlinwashington1B
Tue Jul 16, 2019 12:37 pm
Forum: Ionic & Covalent Bonds
Topic: Homework 3.5
Replies: 7
Views: 328

Re: Homework 3.5

Right...It's because the 5s orbital had already been filled up In Xenon's configuration.
by jlinwashington1B
Tue Jul 16, 2019 12:21 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polarity
Replies: 1
Views: 97

Polarity

How is polarity determined? Is it via the unequal sharing of electrons?
by jlinwashington1B
Tue Jul 16, 2019 12:10 pm
Forum: Hybridization
Topic: hybridization
Replies: 2
Views: 236

hybridization

I am having trouble understanding the relationship between electrons and orbitals when trying to identify the hybridization. Can someone please help.
by jlinwashington1B
Thu Jul 11, 2019 1:38 pm
Forum: SI Units, Unit Conversions
Topic: Moles mols mol? [ENDORSED]
Replies: 21
Views: 1274

Re: Moles mols mol? [ENDORSED]

The concept of moles can be used to measure molecules. Thus, the terms are used interchangeably.
by jlinwashington1B
Thu Jul 11, 2019 1:17 pm
Forum: Resonance Structures
Topic: Lewis Structures vs. Resonance
Replies: 3
Views: 198

Lewis Structures vs. Resonance

What is the difference between Lewis & Resonance structures?
by jlinwashington1B
Thu Jul 11, 2019 1:14 pm
Forum: Ionic & Covalent Bonds
Topic: Ground State
Replies: 13
Views: 444

Re: Ground State

So (hypothetically) in the event that there is an electron configuration that exceeds 4s1, we would take an electron from the next orbital because the energy would be higher?
by jlinwashington1B
Thu Jul 11, 2019 1:09 pm
Forum: Lewis Structures
Topic: Double Bonds [ENDORSED]
Replies: 4
Views: 328

Re: Double Bonds [ENDORSED]

There are many resonance structures that correlate with bond formation. However, it is important to make sure that when you create these structures to fulfill the octet rule.
by jlinwashington1B
Thu Jul 11, 2019 1:04 pm
Forum: Ionic & Covalent Bonds
Topic: Homework 3.5
Replies: 7
Views: 328

Re: Homework 3.5

I was wondering the same thing because the s and p orbital is before the d orbital, right??
by jlinwashington1B
Thu Jul 11, 2019 1:02 pm
Forum: Ionic & Covalent Bonds
Topic: Ground State
Replies: 13
Views: 444

Re: Ground State

I'm not really sure, but I know that it is losing an electron (considering the "+") which means that it is taken out of the s orbital.
by jlinwashington1B
Thu Jul 04, 2019 1:14 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Stoichiometric reactions
Replies: 5
Views: 499

Re: Stoichiometric reactions

This equation is balanced on both sides... Each nitrogen has 2, while each hydrogen has 6 ( 2x3=6). Thus, this equation is not based on equivalence, but rather making sure that each element has the correct coefficients on both sides to get that stable balance.
by jlinwashington1B
Thu Jul 04, 2019 1:03 pm
Forum: Limiting Reactant Calculations
Topic: Are these important? [ENDORSED]
Replies: 3
Views: 296

Re: Are these important? [ENDORSED]

Can someone explain how to go about solving this. I know that Avogadro's number is used when solving for moles...
by jlinwashington1B
Thu Jul 04, 2019 12:53 pm
Forum: Empirical & Molecular Formulas
Topic: Molar Mass vs. Atomic Weight
Replies: 7
Views: 415

Re: Molar Mass vs. Atomic Weight

Molar mass is the sum of the atomic mass (the elements listed on the periodic table).
by jlinwashington1B
Thu Jul 04, 2019 12:42 pm
Forum: Significant Figures
Topic: Determining sig figs
Replies: 10
Views: 579

Re: Determining sig figs

Will the number of sig figs determine if our answer is correct or incorrect?
by jlinwashington1B
Thu Jul 04, 2019 12:37 pm
Forum: Properties of Light
Topic: wavelength
Replies: 11
Views: 652

Re: wavelength

I have the same question... Does amplitude refer to the peak of the wave?
by jlinwashington1B
Thu Jul 04, 2019 12:33 pm
Forum: Balancing Chemical Reactions
Topic: Balancing Equations
Replies: 6
Views: 242

Re: Balancing Equations

I remember going over a problem in discussion that required algebra in order tp balance equations... Can someone help me to understand this concept?
by jlinwashington1B
Fri Jun 28, 2019 9:25 pm
Forum: Einstein Equation
Topic: E=hv
Replies: 41
Views: 1516

Re: E=hv

I know that E represents the energy of the photon, while the equation itself represents electron removal... In lecture today Professor Lavelle showed us an example of the electron removal from a metal. My question is can electrons be removed anywhere?
by jlinwashington1B
Fri Jun 28, 2019 9:08 pm
Forum: Properties of Light
Topic: limiting reagents
Replies: 4
Views: 356

Re: limiting reagents

Why would you just choose one of the products?
by jlinwashington1B
Fri Jun 28, 2019 9:01 pm
Forum: Properties of Light
Topic: HW 1.55A
Replies: 2
Views: 257

Re: HW 1.55A

With problems like these, are we always supposed to convert to meters?
by jlinwashington1B
Thu Jun 27, 2019 1:04 pm
Forum: Molarity, Solutions, Dilutions
Topic: Homework Problem G.13 in Fundamentals
Replies: 3
Views: 210

Re: Homework Problem G.13 in Fundamentals

I'm also confused with how to solve this... When it says "how many moles of nitrogen", does that mean we have to find the mass of nitrogen and then multiply it by Avogadro's number?? Please help.
by jlinwashington1B
Thu Jun 27, 2019 12:23 pm
Forum: SI Units, Unit Conversions
Topic: Properties
Replies: 1
Views: 205

Properties

Why is volume an extensive property, while density is intensive?
by jlinwashington1B
Thu Jun 27, 2019 12:17 pm
Forum: Empirical & Molecular Formulas
Topic: Formulas
Replies: 10
Views: 738

Formulas

Can someone please explain how we find the number to multiply by when making the molecular formula?
by jlinwashington1B
Mon Mar 11, 2019 5:38 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Ideal Gas C
Replies: 5
Views: 272

Re: Ideal Gas C

CHEM 14B Lover wrote:For ideal gases, why is Cp 5/2R and Cv 3/2R


What does R refer to?
by jlinwashington1B
Mon Mar 11, 2019 5:37 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Cp vs Cv
Replies: 7
Views: 297

Re: Cp vs Cv

Constant volume, and constant pressure... The problem should contain enough information to determine which one you should use.
by jlinwashington1B
Mon Mar 11, 2019 5:33 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Delta U
Replies: 5
Views: 199

Delta U

Just for clarification... the reaction is isothermal if delta U equals 0?
by jlinwashington1B
Mon Mar 11, 2019 5:26 pm
Forum: Ideal Gases
Topic: Cell Diagram/Ecell
Replies: 8
Views: 291

Cell Diagram/Ecell

how do we determine which is the anode and which is the cathode?
by jlinwashington1B
Mon Mar 11, 2019 5:15 pm
Forum: Balancing Redox Reactions
Topic: oxidizing agent and reducing agent
Replies: 15
Views: 225

Re: oxidizing agent and reducing agent

If the oxidation number is greater in the product, then it lost electrons (oxidized). If the oxidation number is less, then it gained electrons (reduced).
by jlinwashington1B
Mon Mar 11, 2019 5:09 pm
Forum: Balancing Redox Reactions
Topic: Oxidation number?
Replies: 12
Views: 223

Re: Oxidation number?

He is referring to the groups and their charges on the periodic table.
by jlinwashington1B
Mon Mar 11, 2019 5:07 pm
Forum: Balancing Redox Reactions
Topic: Short hand notation
Replies: 8
Views: 161

Re: Short hand notation

A salt bridge is used to connect the oxidation and reduction half-cells of a galvanic cell.
by jlinwashington1B
Mon Mar 11, 2019 4:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Ka2
Replies: 1
Views: 43

Ka2

What is Ka2, in simple terms?
by jlinwashington1B
Mon Mar 11, 2019 10:48 am
Forum: Ideal Gases
Topic: Water
Replies: 13
Views: 232

Re: Water

When will water become a gas or solid?
by jlinwashington1B
Mon Mar 11, 2019 10:43 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ignoring x
Replies: 16
Views: 492

Re: ignoring x

X can be ignored when k is less than 1x10^-3
by jlinwashington1B
Mon Mar 11, 2019 10:40 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Injecting noble gasses
Replies: 7
Views: 133

Re: Injecting noble gasses

Nope, there won't be a change in the equilibrium constant.
by jlinwashington1B
Mon Mar 11, 2019 10:38 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Le Chatelier's Principle
Replies: 3
Views: 78

Le Chatelier's Principle

What does this principle refer to? Is it true that it predicts the change in equilibria?
by jlinwashington1B
Mon Mar 11, 2019 10:34 am
Forum: Ideal Gases
Topic: 5% rule
Replies: 12
Views: 294

Re: 5% rule

What is the 5% rule, and what does it refer to?
by jlinwashington1B
Mon Mar 11, 2019 10:32 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: increasing pressure, what happens to concentration?
Replies: 10
Views: 219

Re: increasing pressure, what happens to concentration?

when pressure increases, the reaction is attracted to the side with fewer moles.
by jlinwashington1B
Mon Mar 11, 2019 10:29 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Constanst
Replies: 3
Views: 73

Equilibrium Constanst

Is it true that k is unitless when dividing products by reactants ?
by jlinwashington1B
Mon Mar 11, 2019 10:27 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Final Exam
Replies: 23
Views: 292

Re: Final Exam

Is there anyone doing study groups for the final ?
by jlinwashington1B
Mon Mar 11, 2019 10:22 am
Forum: Ideal Gases
Topic: Ideal gases
Replies: 5
Views: 86

Ideal gases

Are we just to assume that a gas is an ideal gas ?
by jlinwashington1B
Mon Mar 11, 2019 10:21 am
Forum: Ideal Gases
Topic: ICE
Replies: 8
Views: 126

ICE

f the value of K is less than 10^-3, what can we assume about the value ?
by jlinwashington1B
Sun Mar 03, 2019 7:15 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Cell diagram
Replies: 4
Views: 104

Cell diagram

What are cell diagrams used for and what are its components?
by jlinwashington1B
Fri Feb 08, 2019 11:09 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Delta H
Replies: 7
Views: 297

Delta H

What does this refer to, and what’s the equation for it?
by jlinwashington1B
Fri Feb 08, 2019 11:06 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond
Replies: 2
Views: 66

Bond

What should I know about bond angles ?
by jlinwashington1B
Fri Feb 08, 2019 8:32 am
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 61
Views: 53676

Re: Tutoring? [ENDORSED]

Are there any one on one sessions ?
by jlinwashington1B
Fri Feb 08, 2019 8:29 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Systems
Replies: 2
Views: 65

Systems

What is the difference between open and closed systems ?
by jlinwashington1B
Fri Feb 01, 2019 12:01 pm
Forum: Student Social/Study Group
Topic: Lecture Notes (1/30)
Replies: 4
Views: 129

Re: Lecture Notes (1/30)

Thanks!!
by jlinwashington1B
Fri Feb 01, 2019 11:59 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: CP/V
Replies: 2
Views: 66

CP/V

What are CP and CP formulas?
by jlinwashington1B
Fri Feb 01, 2019 11:57 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Enthalpies
Replies: 5
Views: 74

Enthalpies

What's does enthalpies refer to?
by jlinwashington1B
Thu Jan 24, 2019 6:39 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: PV= RnT
Replies: 2
Views: 93

PV= RnT

What does the formula PV=RnT refer to?
by jlinwashington1B
Thu Jan 24, 2019 6:36 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Acid and bases
Replies: 1
Views: 53

Acid and bases

Does Acid and bases have anything to do with equilibrium?
by jlinwashington1B
Thu Jan 24, 2019 6:33 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pH
Replies: 9
Views: 180

pH

What is pH and how do I find it?
by jlinwashington1B
Wed Jan 16, 2019 9:30 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Conjugates
Replies: 5
Views: 122

Re: Conjugates

Does anyone know what the conjugate seesaw refers to ?
by jlinwashington1B
Wed Jan 16, 2019 9:28 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Acid & Bases
Replies: 1
Views: 39

Acid & Bases

What are acids & bases? What are conjugate acid & bases ?
by jlinwashington1B
Wed Jan 16, 2019 9:25 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: States
Replies: 1
Views: 48

States

difference between liquids, solids, gases, and water in concentration ?
by jlinwashington1B
Wed Jan 16, 2019 9:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Number of questions on test one [ENDORSED]
Replies: 39
Views: 17750

Re: Number of questions on test one [ENDORSED]

905092269 wrote:I was wondering how many questions test one has? I was also wondering how many points will be taken off for simple mistakes (sig figs, units, etc.)?

When will the test take place? Does it cover both equilibrium and acids and bases?
by jlinwashington1B
Wed Jan 16, 2019 9:20 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE
Replies: 5
Views: 109

ICE

What is X on an ice table ?
by jlinwashington1B
Wed Jan 16, 2019 9:19 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pH
Replies: 5
Views: 98

pH

Does anyone know how to solve pH?
by jlinwashington1B
Wed Jan 16, 2019 9:10 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Concentration
Replies: 4
Views: 98

Concentration

What's the difference between Q & K

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