Search found 58 matches

by Josh Moy 1H
Tue Mar 13, 2018 8:30 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Standard Gibbs Free Energy of Activation
Replies: 2
Views: 645

Re: Standard Gibbs Free Energy of Activation

because you need energy for the reaction to happen
by Josh Moy 1H
Tue Mar 13, 2018 8:29 pm
Forum: General Rate Laws
Topic: Unique Reaction Rates [ENDORSED]
Replies: 27
Views: 27502

Re: Unique Reaction Rates [ENDORSED]

It's a unique reaction rate because its the same for all concentrations of reactants and products when multiplied by their stoichiometric coefficient.
by Josh Moy 1H
Tue Mar 13, 2018 8:28 pm
Forum: *Alkanes
Topic: How to name the Alcohol
Replies: 4
Views: 518

Re: How to name the Alcohol

will naming be on the final?
by Josh Moy 1H
Mon Mar 05, 2018 10:42 pm
Forum: Second Order Reactions
Topic: Order reactions
Replies: 6
Views: 394

Re: Order reactions

Order reactions are determined by how the rate changes in respect to concentration
by Josh Moy 1H
Mon Mar 05, 2018 10:40 pm
Forum: General Rate Laws
Topic: Temperature Signifcance
Replies: 4
Views: 134

Re: Temperature Signifcance

temperature has no relevance for these problems
by Josh Moy 1H
Mon Mar 05, 2018 10:40 pm
Forum: First Order Reactions
Topic: First order
Replies: 4
Views: 129

Re: First order

If the other reactant's concentrations remain constant then yes it would be first order
by Josh Moy 1H
Fri Mar 02, 2018 11:08 am
Forum: First Order Reactions
Topic: First Order Graph
Replies: 11
Views: 237

Re: First Order Graph

A proper first order graph is just a straight decreasing line?
by Josh Moy 1H
Fri Mar 02, 2018 11:07 am
Forum: Zero Order Reactions
Topic: Order Reactions [ENDORSED]
Replies: 4
Views: 307

Re: Order Reactions [ENDORSED]

Order reveals how the concentrations of reactants relate to the rate
by Josh Moy 1H
Fri Mar 02, 2018 11:07 am
Forum: Zero Order Reactions
Topic: Units of k [ENDORSED]
Replies: 13
Views: 280

Re: Units of k [ENDORSED]

Unit of K is in a format so that the rate becomes mol/L S
by Josh Moy 1H
Sun Feb 25, 2018 8:30 pm
Forum: Student Social/Study Group
Topic: Chemistry Joke
Replies: 57
Views: 1931

Re: Chemistry Joke

What did the basic DJ say?

Drop the base!!!
by Josh Moy 1H
Sun Feb 25, 2018 8:29 pm
Forum: Student Social/Study Group
Topic: Chemistry Joke
Replies: 57
Views: 1931

Re: Chemistry Joke

Did you gain an electron because I’m starting to feel some charge
by Josh Moy 1H
Sun Feb 25, 2018 8:29 pm
Forum: Student Social/Study Group
Topic: Chemistry Joke
Replies: 57
Views: 1931

Re: Chemistry Joke

These are some funny jokes!!
by Josh Moy 1H
Tue Feb 20, 2018 11:54 pm
Forum: Student Social/Study Group
Topic: Chemistry Joke
Replies: 57
Views: 1931

Re: Chemistry Joke

if you aren't part of the solution you're part of the precipitate
by Josh Moy 1H
Tue Feb 20, 2018 11:52 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788445

Re: Post All Chemistry Jokes Here

dont trust an atom. Why? they make up everything
by Josh Moy 1H
Tue Feb 20, 2018 11:51 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: cell diagram [ENDORSED]
Replies: 2
Views: 79

cell diagram [ENDORSED]

how do you order the cell diagram aside from anode is left and cathode is right
by Josh Moy 1H
Mon Feb 12, 2018 10:04 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 9.63
Replies: 2
Views: 107

Re: 9.63

If the compound has a negative delta G value then it's stable
by Josh Moy 1H
Mon Feb 12, 2018 10:02 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 9.75
Replies: 1
Views: 91

9.75

For 9.75, my calculator can't calculate using Botlzmann's because it overflows...what would i do on the exam?
by Josh Moy 1H
Mon Feb 12, 2018 10:00 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 9.81
Replies: 1
Views: 85

9.81

What is the logic behind the solution to this problem?
by Josh Moy 1H
Wed Feb 07, 2018 10:30 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Open System
Replies: 7
Views: 258

Re: Open System

you can increase energy via:
1. Add or subtract matter
2. Add or subtract heat
3. do work on it
by Josh Moy 1H
Wed Feb 07, 2018 10:29 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Isolated
Replies: 9
Views: 282

Re: Isolated

Heat is contained in the isolated system so it changes within itself. The only thing that cant be changed is volume because its constant
by Josh Moy 1H
Wed Feb 07, 2018 10:28 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: exothermic
Replies: 5
Views: 165

Re: exothermic

If a flask turns cold its endothermic because it absorbs heat
by Josh Moy 1H
Wed Jan 31, 2018 10:24 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Change in S with changes in P, V, and T
Replies: 3
Views: 112

Re: Change in S with changes in P, V, and T

You wont be asked a problem with all three of those being unknown because its not possible to calculate one without the other 2
by Josh Moy 1H
Wed Jan 31, 2018 10:22 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: The value of Cp
Replies: 8
Views: 216

Re: The value of Cp

Cp of ideal gases is 5/2(R) and Cv is 3/2(R)
by Josh Moy 1H
Wed Jan 31, 2018 10:21 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: sign of entropy
Replies: 11
Views: 198

Re: sign of entropy

sign of entropy depends on flow of heat
by Josh Moy 1H
Wed Jan 24, 2018 10:34 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Exothermic
Replies: 7
Views: 170

Re: Exothermic

for an exo reaction delta H is always negative implying the release of heat (thus the reaction is warmer)
by Josh Moy 1H
Wed Jan 24, 2018 10:33 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Significant Figures of ∆H
Replies: 3
Views: 134

Re: Significant Figures of ∆H

yep sig figs will depend on the smallst enthalpy value i.e 322KJ is 3 SF
by Josh Moy 1H
Wed Jan 24, 2018 10:32 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 8.63
Replies: 4
Views: 145

8.63

For part c does the h20 (1) have a different formation enthalpy because when i calculate evreything my value is off
by Josh Moy 1H
Sun Jan 21, 2018 11:34 pm
Forum: Phase Changes & Related Calculations
Topic: Work Equation
Replies: 3
Views: 94

Re: Work Equation

The negative signifies a loss in energy
by Josh Moy 1H
Sun Jan 21, 2018 11:33 pm
Forum: Phase Changes & Related Calculations
Topic: Test 1 [ENDORSED]
Replies: 7
Views: 294

Re: Test 1 [ENDORSED]

will all the equations be on a formula sheet?
by Josh Moy 1H
Sun Jan 21, 2018 11:31 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788445

Re: Post All Chemistry Jokes Here

An electron went on a date, it was electric
by Josh Moy 1H
Wed Jan 17, 2018 10:19 am
Forum: Phase Changes & Related Calculations
Topic: Open/Closed/Isolated
Replies: 11
Views: 352

Re: Open/Closed/Isolated

isolated systems are in fixed quantities with no interaction with its outside environment i.e thermos
by Josh Moy 1H
Wed Jan 17, 2018 10:18 am
Forum: Phase Changes & Related Calculations
Topic: Open/Closed/Isolated
Replies: 11
Views: 352

Re: Open/Closed/Isolated

with the lid on a fish tank is a closed system
by Josh Moy 1H
Wed Jan 17, 2018 10:14 am
Forum: Phase Changes & Related Calculations
Topic: Formula Sheet? [ENDORSED]
Replies: 3
Views: 146

Re: Formula Sheet? [ENDORSED]

I feel like this formula sheet will include heat capacities etc
by Josh Moy 1H
Fri Jan 12, 2018 10:24 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788445

Re: Post All Chemistry Jokes Here

What do you call a tooth in a glass of water?

A molar solution

*ba dum tss
by Josh Moy 1H
Fri Jan 12, 2018 10:22 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788445

Re: Post All Chemistry Jokes Here

Why can't atoms be trusted?

Because they make up everything
by Josh Moy 1H
Fri Jan 12, 2018 10:21 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788445

Re: Post All Chemistry Jokes Here

What kind of dogs do chemists have?

Laboratory retrievers
by Josh Moy 1H
Sun Dec 03, 2017 11:27 pm
Forum: Dipole Moments
Topic: When do dipole moments occur?
Replies: 3
Views: 274

Re: When do dipole moments occur?

Dipole occurs in a covalently bonded atom, usually when the lewis structure is not symmetric (unequal charges)
by Josh Moy 1H
Sun Dec 03, 2017 11:26 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Chemical Equilibrium
Replies: 3
Views: 176

Re: Chemical Equilibrium

usually yes it's a liquid or aqueous solution
by Josh Moy 1H
Mon Nov 27, 2017 9:36 am
Forum: Naming
Topic: prefixes
Replies: 2
Views: 126

prefixes

How do you determine the proper prefixes for ligands
by Josh Moy 1H
Mon Nov 27, 2017 9:35 am
Forum: Naming
Topic: coordination compounds
Replies: 1
Views: 104

coordination compounds

how do you name coordination compounds?
by Josh Moy 1H
Fri Nov 17, 2017 9:42 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: TM Cations
Replies: 2
Views: 141

Re: TM Cations

if a TM doesn't form 6 bonds how many bonds would it usually form?
by Josh Moy 1H
Fri Nov 17, 2017 9:41 pm
Forum: Naming
Topic: Roman Numeral
Replies: 2
Views: 118

Re: Roman Numeral

the roman numeral represents the charge of the transition metal
by Josh Moy 1H
Tue Nov 07, 2017 6:41 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic and Covalent Bonds
Replies: 9
Views: 323

Re: Ionic and Covalent Bonds

Ionic bonds are btween a metal and non metal, and a covalent bond is between two non metals
by Josh Moy 1H
Tue Nov 07, 2017 6:40 pm
Forum: Lewis Structures
Topic: Shape
Replies: 5
Views: 214

Shape

Will we get marked off if our shapes our different? say the compound is NCl3, would we get marked off if we had it in the shape of _l_ instead of a mercedes logo type shape?
by Josh Moy 1H
Wed Nov 01, 2017 11:04 am
Forum: Trends in The Periodic Table
Topic: Atomic Radius vs. Ionic Radius [ENDORSED]
Replies: 4
Views: 222

Re: Atomic Radius vs. Ionic Radius [ENDORSED]

Atomic radius is half the distance between the center of two atoms. ionic radius is the distance between 2 ions.
by Josh Moy 1H
Wed Nov 01, 2017 11:02 am
Forum: Trends in The Periodic Table
Topic: Ie [ENDORSED]
Replies: 1
Views: 144

Ie [ENDORSED]

What is the difference between ionization energy and electron affinity?
by Josh Moy 1H
Thu Oct 26, 2017 9:28 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: s- electrons vs p- electrons [ENDORSED]
Replies: 7
Views: 337

Re: s- electrons vs p- electrons [ENDORSED]

It's because of the less shielding
by Josh Moy 1H
Thu Oct 26, 2017 6:48 pm
Forum: Trends in The Periodic Table
Topic: atomic size
Replies: 4
Views: 203

atomic size

for atomic radius, if an element is lower on the periodic table but closer to the right side, would it be bigger or smaller than an element higher on the periodic table thats on the left side
by Josh Moy 1H
Sun Oct 22, 2017 7:44 pm
Forum: DeBroglie Equation
Topic: When to use De Broglie Equation [ENDORSED]
Replies: 11
Views: 857

Re: When to use De Broglie Equation [ENDORSED]

Use when you have mass and velocity and need wavelength
by Josh Moy 1H
Sun Oct 22, 2017 7:44 pm
Forum: DeBroglie Equation
Topic: units for mass
Replies: 6
Views: 310

Re: units for mass

because joules is per kilogram
by Josh Moy 1H
Tue Oct 17, 2017 9:00 pm
Forum: Properties of Light
Topic: Rydberg's Constant
Replies: 4
Views: 321

Re: Rydberg's Constant

In the textbook 3.29x10^15 is the number used to represent Rydberg, so I would use that value.
by Josh Moy 1H
Tue Oct 17, 2017 8:59 pm
Forum: Properties of Light
Topic: Planck's Constant
Replies: 10
Views: 425

Re: Planck's Constant

Use planck's constant whenever you need to use/derive equations involving the variable h
by Josh Moy 1H
Thu Oct 12, 2017 6:32 pm
Forum: Einstein Equation
Topic: question 27
Replies: 2
Views: 222

question 27

For question 27, it wants moles of photons, and i found energy to be 4.7x10^-19 J/photon, but when converting to just photons the solution Manual turns the 4.7x10^-19 into photons/J to cancel out jules with the 64J. Why did they do this
by Josh Moy 1H
Thu Oct 12, 2017 4:02 pm
Forum: Photoelectric Effect
Topic: Energy in kj or j when solving a problem?
Replies: 10
Views: 450

Re: Energy in kj or j when solving a problem?

If we have kg or km should we convert to g and m?
by Josh Moy 1H
Wed Oct 11, 2017 10:21 pm
Forum: Properties of Light
Topic: Question 1.15
Replies: 1
Views: 155

Question 1.15

Did anyone understand question 13? What is the Rydberg formula?
by Josh Moy 1H
Wed Oct 11, 2017 10:17 pm
Forum: Properties of Light
Topic: Velocity [ENDORSED]
Replies: 13
Views: 612

Velocity [ENDORSED]

Is Velocity (m/s) the same as speed?
by Josh Moy 1H
Thu Oct 05, 2017 11:02 pm
Forum: Significant Figures
Topic: Does temperature count for sig figs? [ENDORSED]
Replies: 4
Views: 5329

Re: Does temperature count for sig figs? [ENDORSED]

yes all values incorporated into your calculations count for sig figs
by Josh Moy 1H
Tue Oct 03, 2017 11:46 pm
Forum: Limiting Reactant Calculations
Topic: Textbook fundamentals M
Replies: 1
Views: 163

Textbook fundamentals M

Has anyone completed fundamentals part M question 19? I can't seem to get the correct answer

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