Search found 22 matches

by remymink4J
Tue Mar 08, 2016 9:51 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Degeneracy
Replies: 1
Views: 364

Degeneracy

How would you know when to use avogadro's number as the number of particles in a residual entropy/degeneracy problem?
by remymink4J
Mon Feb 29, 2016 8:04 pm
Forum: *Alkenes
Topic: Naming
Replies: 3
Views: 647

Naming

If you have both sec and tert, which comes first (as they both defy the alphabetical order rule)?
by remymink4J
Wed Feb 17, 2016 8:30 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Multi-Reactant Reactions
Replies: 1
Views: 297

Multi-Reactant Reactions

In multi-reactant reactions, such as A+B+C--->P I understand that you have to assume two reactants to be in excess so that they remain constant where the reactant of smaller concentration is studied. So [B]>>[A] and [C]>>[A] means you study [A] However after studying [A] and finding the order, do yo...
by remymink4J
Wed Feb 17, 2016 11:52 am
Forum: First Order Reactions
Topic: Lecture 2/8
Replies: 1
Views: 354

Lecture 2/8

In lecture, Dr. Lavelle indicated that in 1st order reactions, the "slow step" involves just one molecule where in 2nd order reactions, the "slow step" involves two molecules.

What is this "slow step"?
by remymink4J
Sat Feb 06, 2016 9:09 pm
Forum: Phase Changes & Related Calculations
Topic: Cv and Cp
Replies: 4
Views: 691

Cv and Cp

What are all of the Cp and Cv conversions? I know that they are different for monatomic, diatomic, and polyatomic gases, but I'm not positive as to what the actual conversions are.
by remymink4J
Tue Feb 02, 2016 9:03 pm
Forum: Balancing Redox Reactions
Topic: Voltage vs. Cell Potential
Replies: 1
Views: 340

Voltage vs. Cell Potential

Are voltage and cell potential synonymous?
by remymink4J
Thu Jan 28, 2016 6:04 pm
Forum: Phase Changes & Related Calculations
Topic: State Property vs. State Function
Replies: 1
Views: 363

State Property vs. State Function

Is there a difference between state property and state function? Or are these terms used synonymously?
by remymink4J
Sun Jan 17, 2016 8:36 pm
Forum: Phase Changes & Related Calculations
Topic: Temperature as a state property?
Replies: 2
Views: 438

Re: Temperature as a state property?

TEMPERATURE is a state property, HEAT is not. For this, you have to remember that temperature and heat are two completely different things. Temperature: indicates random motion of particles Heat: the transfer of energy due to a difference in temperature. (These came from page 22 of the Thermochemist...
by remymink4J
Wed Jan 13, 2016 9:36 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Change in System at Equilibrium
Replies: 1
Views: 359

Change in System at Equilibrium

In lecture, it was said that generally volume changed in a system at equilibrium is extremely small, so we would use dV instead of deltaV. Why is this?

Also are there any other minimal changes in systems at equilibrium that require the derivative to solve?
by remymink4J
Sat Jan 09, 2016 1:14 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard State
Replies: 1
Views: 1141

Standard State

How can you tell when an element is in its most stable state? And is that considered its standard state?
by remymink4J
Sun Nov 29, 2015 7:25 pm
Forum: Conjugate Acids & Bases
Topic: Strong vs. Weak Acids and Bases
Replies: 2
Views: 521

Strong vs. Weak Acids and Bases

How would you be able to tell whether an acid or a base is strong or weak by just looking at its chemical formula?
by remymink4J
Wed Nov 25, 2015 12:10 pm
Forum: Bronsted Acids & Bases
Topic: Strong/weak acids and bases
Replies: 1
Views: 520

Strong/weak acids and bases

How can you tell whether an acid or base is strong or weak in a reaction when using a double-headed arrow (representing equilibrium) vs. an arrow indicating only one direction?
by remymink4J
Thu Nov 12, 2015 1:38 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Pressure
Replies: 5
Views: 796

Re: Pressure

K for partial pressures in gases is partially manipulated by temperature, but K for molar concentrations is not (that's just mol/Liter). The only way K affects equilibrium shifts is when the partial pressures/molar concentrations for products are drastically higher than those of reactants or vice ve...
by remymink4J
Thu Nov 12, 2015 1:30 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic Equation
Replies: 1
Views: 267

Quadratic Equation

If both results from the quadratic equation are positive, how do you know which to use to substitute for 'X'?
by remymink4J
Thu Nov 12, 2015 1:28 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic Equation
Replies: 2
Views: 819

Quadratic Equation

If both results from the quadratic equation are positive, how do you know which to use to substitute for 'X'?
by remymink4J
Mon Nov 02, 2015 4:17 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands
Replies: 1
Views: 391

Ligands

What exactly is a ligand? Is it just an atom that branches off a transition metal?
by remymink4J
Sat Oct 31, 2015 12:26 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Bond Order
Replies: 3
Views: 1265

Bond Order

Can bond order ever be negative? Will there be times when there are more electrons in the anti bonding region than in the bonding region?
by remymink4J
Mon Oct 26, 2015 8:30 pm
Forum: Ionic & Covalent Bonds
Topic: Cations and Anions [ENDORSED]
Replies: 12
Views: 1297

Cations and Anions [ENDORSED]

What's the difference between a cation and an anion? I'm having trouble differentiating the two.
by remymink4J
Sun Oct 18, 2015 9:54 pm
Forum: Resonance Structures
Topic: Formal Charges
Replies: 3
Views: 629

Formal Charges

Are we ever going to have to find the total formal charge of a compound? Or just the individual formal charges of each bond?
by remymink4J
Wed Oct 14, 2015 5:28 pm
Forum: Trends in The Periodic Table
Topic: Atomic, covalent, ionic radii
Replies: 1
Views: 439

Atomic, covalent, ionic radii

What is the difference between atomic, covalent, and ionic radii? What importance do they have in periodic trends?
by remymink4J
Fri Oct 09, 2015 6:45 pm
Forum: *Shrodinger Equation
Topic: Wave Function
Replies: 3
Views: 661

Wave Function

I understand that wave function and orbitals are essentially the same thing, but WHY/how? In what way is the wave function the same thing as an orbital?
by remymink4J
Fri Oct 02, 2015 6:21 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Energy Levels
Replies: 1
Views: 314

Energy Levels

I understand that if the energy from a light sample doesn't quite reach the energy needed to excite an electron from one n level to the next, the electron will not absorb any energy, however if there is enough energy provided to excite an electron from an n=1 level to an n=2 level but not quite an n...

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