Search found 61 matches

by Max Madrzyk Dis 4G
Thu Jan 16, 2020 11:45 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Factors
Replies: 7
Views: 24

Re: Factors

Yes, temperature is the only factor that will change the K equilibrium.
by Max Madrzyk Dis 4G
Thu Jan 16, 2020 11:40 am
Forum: Ideal Gases
Topic: bars vs atm
Replies: 8
Views: 26

Re: bars vs atm

Both units have to deal with pressure so I think the only thing that matters is that you stay consistent throughout the problem that you are working.
by Max Madrzyk Dis 4G
Thu Jan 16, 2020 11:33 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Kw
Replies: 16
Views: 50

Re: Kw

Kw is a constant and I believe and it is the equilibrium constant for water and it equals 1.0x10^-14.
by Max Madrzyk Dis 4G
Thu Jan 16, 2020 11:31 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kc vs Kp
Replies: 5
Views: 9

Re: Kc vs Kp

I think Kc can be used with both but I think usually the problem will specify whether to find Kc or Kp. :)
by Max Madrzyk Dis 4G
Thu Jan 16, 2020 11:28 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic
Replies: 10
Views: 30

Re: Quadratic

I think the chances that you would get two positive values after using the quadratic equation are pretty low but if you do I would plug them back into the ICE table and see which value is more reasonable.
by Max Madrzyk Dis 4G
Thu Jan 09, 2020 12:29 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: units of K
Replies: 10
Views: 29

Re: units of K

The equilibrium constant does not have units because they cancel out when you are calculating it.
by Max Madrzyk Dis 4G
Thu Jan 09, 2020 12:27 pm
Forum: Ideal Gases
Topic: Solids and Liquids
Replies: 7
Views: 29

Re: Solids and Liquids

Solids and liquids are not included because their concentrations stay the same throughout the reaction so there is no need to calculate the change.
by Max Madrzyk Dis 4G
Thu Jan 09, 2020 12:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework 1
Replies: 18
Views: 105

Re: Homework 1

The first homework assignment is due in lecture Friday.
by Max Madrzyk Dis 4G
Thu Jan 09, 2020 12:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework 1
Replies: 18
Views: 105

Re: Homework 1

The first homework assignment is due in lecture Friday.
by Max Madrzyk Dis 4G
Thu Jan 09, 2020 12:25 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 5G3
Replies: 8
Views: 24

Re: 5G3

Yes, you would use H2O because you include all gases in the equation.
by Max Madrzyk Dis 4G
Thu Jan 09, 2020 12:23 pm
Forum: Ideal Gases
Topic: K and Q
Replies: 13
Views: 48

Re: K and Q

K is the equilibrium constant and is used when the reaction is in equilibrium, Q is the reaction quotient and can be used whether or not the reaction is in equilibrium.
by Max Madrzyk Dis 4G
Tue Dec 03, 2019 10:00 pm
Forum: Lewis Acids & Bases
Topic: Naming Acids
Replies: 3
Views: 21

Re: Naming Acids

I think that you should probably know the names of common ligands like CN, NH3, PSO4 and such.
by Max Madrzyk Dis 4G
Tue Dec 03, 2019 9:56 pm
Forum: Bronsted Acids & Bases
Topic: How to determine whether a molecule is an acid or a base
Replies: 5
Views: 32

Re: How to determine whether a molecule is an acid or a base

A lewis definition of a base is a proton donor so N, having a lone pair is likely to give that pair away therefore making it a base.
by Max Madrzyk Dis 4G
Tue Dec 03, 2019 9:47 pm
Forum: Biological Examples
Topic: Polydentate
Replies: 4
Views: 29

Re: Polydentate

Polydentate describes how many bonding sites a ligand can have to a transition metal.
by Max Madrzyk Dis 4G
Tue Dec 03, 2019 9:45 pm
Forum: Bronsted Acids & Bases
Topic: Self-Test J.1A
Replies: 1
Views: 13

Re: Self-Test J.1A

C6H6 is probably neither an acid or base because it is stable and nonpolar.
by Max Madrzyk Dis 4G
Tue Dec 03, 2019 9:44 pm
Forum: Bronsted Acids & Bases
Topic: CaO
Replies: 10
Views: 48

Re: CaO

Im pretty sure CaO is a strong base because it completely dissociates.
by Max Madrzyk Dis 4G
Sun Dec 01, 2019 3:01 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: strong or weak base?
Replies: 13
Views: 54

Re: strong or weak base?

I think strong acids and bases generally contain elements from groups 1 and 2 on the periodic table.
by Max Madrzyk Dis 4G
Sun Dec 01, 2019 3:00 pm
Forum: Bronsted Acids & Bases
Topic: Distinguishing between Strong and Weak Acids/Bases
Replies: 7
Views: 33

Re: Distinguishing between Strong and Weak Acids/Bases

I think they're are like 7 strong acids and 8 strong bases so if you memorize those then you should be fine.
by Max Madrzyk Dis 4G
Sun Dec 01, 2019 2:58 pm
Forum: Naming
Topic: Final Exam?
Replies: 20
Views: 127

Re: Final Exam?

it is cumulative and I expect he will tell us more in the upcoming classes.
by Max Madrzyk Dis 4G
Sun Dec 01, 2019 2:57 pm
Forum: Naming
Topic: Roman Numeral
Replies: 13
Views: 65

Re: Roman Numeral

it represents the charge of the element you are dealing with.
by Max Madrzyk Dis 4G
Sun Dec 01, 2019 2:56 pm
Forum: Conjugate Acids & Bases
Topic: Water as an Acid/Base
Replies: 20
Views: 392

Re: Water as an Acid/Base

yes, water can either act as an acid or base depending on what it is reacting with.
by Max Madrzyk Dis 4G
Wed Nov 20, 2019 1:40 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Seesaw Shape
Replies: 12
Views: 76

Re: Seesaw Shape

Seesaw shape only has >90 and >120 bond angles.
by Max Madrzyk Dis 4G
Wed Nov 20, 2019 1:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Class Next Wednesday?
Replies: 3
Views: 55

Re: Class Next Wednesday?

I believe so, I'm sure Dr. Lavelle will email if there isn't though.
by Max Madrzyk Dis 4G
Wed Nov 20, 2019 1:37 pm
Forum: Hybridization
Topic: Test 2
Replies: 6
Views: 51

Re: Test 2

No, test 2 goes up to sigma and pi binds only.
by Max Madrzyk Dis 4G
Wed Nov 20, 2019 1:36 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Do we need to know the pentagonal bipyramidal model for Test 2?
Replies: 6
Views: 45

Re: Do we need to know the pentagonal bipyramidal model for Test 2?

Based off the common vsper charts that I have viewed I would say no but it never hurts to know anyway!
by Max Madrzyk Dis 4G
Wed Nov 20, 2019 1:33 pm
Forum: Hybridization
Topic: pi bond orientation
Replies: 4
Views: 33

Re: pi bond orientation

Pi bonds are rigid because of their orientation around the axis being across it rather that along it therefore not allowing for the movement observed in sigma bonds.
by Max Madrzyk Dis 4G
Sun Nov 17, 2019 5:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: linear versus angular
Replies: 5
Views: 27

Re: linear versus angular

Yes, it has to do with lone pairs and polarity, so if these charges are present they will repel other elements and cause the bent shape that is observed in water rather than the linear shape present in co2 when there are 2 lone pairs that repel the other elements equally.
by Max Madrzyk Dis 4G
Sun Nov 17, 2019 5:24 pm
Forum: Student Social/Study Group
Topic: What will Test 2 be on?
Replies: 8
Views: 45

Re: What will Test 2 be on?

The test will cover all the material from the midterm to lecture on Friday including one slide that will be in tomorrows lecture.
by Max Madrzyk Dis 4G
Sun Nov 17, 2019 5:23 pm
Forum: Hybridization
Topic: hybridization
Replies: 1
Views: 12

Re: hybridization

Hybridization occurs because electrons and are always moving around the central atom and so are the elements that are bonded so any molecule could be in any of its possible shapes at any given time.
by Max Madrzyk Dis 4G
Sun Nov 17, 2019 5:20 pm
Forum: Student Social/Study Group
Topic: test 2
Replies: 8
Views: 47

Re: test 2

according to the syllabus it is worth 50.
by Max Madrzyk Dis 4G
Sun Nov 17, 2019 5:20 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bonded and Lone Pairs in VSEPR
Replies: 4
Views: 21

Re: Bonded and Lone Pairs in VSEPR

Lone pairs help when determining the general shape but when it comes to molecular shape lone Pairs only influence the shape through repulsion and therefore only bonded atoms effect shape.
by Max Madrzyk Dis 4G
Sun Nov 10, 2019 10:51 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge and Resonance
Replies: 5
Views: 23

Re: Formal Charge and Resonance

No formal charges help find the most stable structure of the compound but don't really tell you anything about resonance.
by Max Madrzyk Dis 4G
Sun Nov 10, 2019 10:50 pm
Forum: *Liquid Structure (Viscosity, Surface Tension, Liquid Crystals, Ionic Liquids)
Topic: Viscosity
Replies: 15
Views: 98

Re: Viscosity

The higher the viscosity the smoother the liquid flows so like honey would have lower viscosity than water.
by Max Madrzyk Dis 4G
Sun Nov 10, 2019 10:49 pm
Forum: Formal Charge and Oxidation Numbers
Topic: central atom
Replies: 21
Views: 103

Re: central atom

Yes, you always want the most formal charges to be zero in any way that is possible.
by Max Madrzyk Dis 4G
Sun Nov 10, 2019 10:48 pm
Forum: Hybridization
Topic: Hybridization Models
Replies: 4
Views: 40

Re: Hybridization Models

I think it would be helpful for understanding if you knew how to draw the orbitals.
by Max Madrzyk Dis 4G
Sun Nov 10, 2019 10:47 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: Interaction Strength
Replies: 4
Views: 16

Re: Interaction Strength

The shape matters with bond strength because the smaller a bond is between two elements the stronger it will be because the effective charge is stronger.
by Max Madrzyk Dis 4G
Sun Nov 03, 2019 3:20 pm
Forum: Dipole Moments
Topic: Midterm
Replies: 8
Views: 88

Re: Midterm

Yes, Lavelle talked about dipole moments before he said that was the end of the information that was to be present on the test.
by Max Madrzyk Dis 4G
Sun Nov 03, 2019 3:17 pm
Forum: Lewis Structures
Topic: Limiting Reactants
Replies: 3
Views: 19

Re: Limiting Reactants

Yes, theoretically the amount found in grams should be the same amount present in the products because of the law of conservation of mass.
by Max Madrzyk Dis 4G
Sun Nov 03, 2019 3:13 pm
Forum: Ionic & Covalent Bonds
Topic: Electron Configuration
Replies: 7
Views: 37

Re: Electron Configuration

Yes, I think the most stable form of an electron is when it has no charge so you will always try and recreate that state for the element or get as close as possible.
by Max Madrzyk Dis 4G
Sun Nov 03, 2019 3:05 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Central atom
Replies: 8
Views: 82

Re: Central atom

When drawing a lewis structure I think the goal is to have the most elements with a formal charge of zero rather than trying to make the formal charge of the central element zero.
by Max Madrzyk Dis 4G
Sun Nov 03, 2019 3:01 pm
Forum: Electronegativity
Topic: What is isoelectronic?
Replies: 13
Views: 55

Re: What is isoelectronic?

Isoelectronic means that different ion combinations of the elements have the same number of electrons and therefore the same configuration.
by Max Madrzyk Dis 4G
Tue Oct 29, 2019 11:17 pm
Forum: Lewis Structures
Topic: Drawing lewis structures
Replies: 8
Views: 52

Re: Drawing lewis structures

I doubt that we need to angle the elements perfectly, I think the main thing is just that you have the configuration with the electrons right.
by Max Madrzyk Dis 4G
Tue Oct 29, 2019 11:12 pm
Forum: Lewis Structures
Topic: Lewis Structure structure
Replies: 4
Views: 24

Re: Lewis Structure structure

I think this unbalanced slanted structure is due to the fact that some elements have a higher binding affinity to electrons and pull them closer to their nucleus, creating partial charges that still repel other elements a little bit so that the structure is not perfect.
by Max Madrzyk Dis 4G
Tue Oct 29, 2019 11:07 pm
Forum: Resonance Structures
Topic: Resonance Clarification
Replies: 8
Views: 44

Re: Resonance Clarification

Resonance is basically when there are multiple right lewis configurations to describe a molecule and that not every molecule is going to be fixed in one of the states so resonance is the ability for the correct model for to exist in multiple ways and the molecule can be expected to be in any one of ...
by Max Madrzyk Dis 4G
Tue Oct 29, 2019 11:04 pm
Forum: Lewis Structures
Topic: Orbitals
Replies: 9
Views: 57

Re: Orbitals

Yeah you would remove the electron from the farthest orbital because it is the farthest distance from the positively charged nucleus and therefore is easiest to remove.
by Max Madrzyk Dis 4G
Tue Oct 29, 2019 10:58 pm
Forum: Ionic & Covalent Bonds
Topic: Valence Electrons?
Replies: 15
Views: 101

Re: Valence Electrons?

Valence electrons for the non metals can basically be counted just by going across the periodic table, for example; Li:1, Be:2, B:3, C:4, N:5, O:6, F:7, and Ne:8. And that pattern follows down the columns.
by Max Madrzyk Dis 4G
Sun Oct 20, 2019 9:08 pm
Forum: Quantum Numbers and The H-Atom
Topic: Z
Replies: 5
Views: 48

Re: Quantum Number Z

The quantum number Z represents the angular component to the momentum of the orbital.
by Max Madrzyk Dis 4G
Sun Oct 20, 2019 9:06 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Incorrect atomic model example
Replies: 3
Views: 16

Re: Incorrect atomic model example

It tells us that the electron cannot be bound to the center of an atom.
by Max Madrzyk Dis 4G
Sun Oct 20, 2019 9:05 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Formulas or Experiments
Replies: 2
Views: 17

Re: Formulas or Experiments

I think those experiments stand for more of a conceptual understanding of why the calculations that we are doing work.
by Max Madrzyk Dis 4G
Sun Oct 20, 2019 9:04 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Pauli Exclusion Principle
Replies: 9
Views: 53

Re: Pauli Exclusion Principle

The Pauli Exclusion Principle states that no one orbital can have more than 2 electrons and that those two electrons cannot have the same quantum number.
by Max Madrzyk Dis 4G
Sun Oct 20, 2019 9:03 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: When do you use a negative sign in the Bohr equation?
Replies: 7
Views: 52

Re: When do you use a negative sign in the Bohr equation?

The negative sign in the Bohr equation is there because it represents the energy the electron must overcome so when the electron and neutron are completely separated, the energy will equal 0.
by Max Madrzyk Dis 4G
Sun Oct 13, 2019 6:50 pm
Forum: SI Units, Unit Conversions
Topic: Fundamentals L35
Replies: 5
Views: 79

Re: Fundamentals L35

The T stands for tons.
by Max Madrzyk Dis 4G
Sun Oct 13, 2019 6:49 pm
Forum: Administrative Questions and Class Announcements
Topic: How to check how many points I have this week for posting on Chemistry Community?
Replies: 11
Views: 79

Re: How to check how many points I have this week for posting on Chemistry Community?

Under quick links there is a post that shows your posts so if you have 5 for the week I think you should be good.
by Max Madrzyk Dis 4G
Sun Oct 13, 2019 6:45 pm
Forum: Photoelectric Effect
Topic: confirmation.
Replies: 5
Views: 34

Re: confirmation.

Yes because the intensity of the light on changes the amplitude of the waves but does not give it enough energy to eject electrons.
by Max Madrzyk Dis 4G
Sun Oct 13, 2019 6:40 pm
Forum: Properties of Light
Topic: Next test
Replies: 23
Views: 195

Re: Next test

Yes, I think that we get an equation sheet for every test.
by Max Madrzyk Dis 4G
Sun Oct 13, 2019 6:38 pm
Forum: Balancing Chemical Reactions
Topic: Any Easy Way
Replies: 10
Views: 103

Re: Any Easy Way

I think the only way to make balancing chemical equations easier is to balance the element that you have the least of first and see how that upsets the balance of other elements and slowly just keep working until the while equation is balanced.
by Max Madrzyk Dis 4G
Fri Oct 04, 2019 1:44 pm
Forum: Empirical & Molecular Formulas
Topic: When should one start rounding in a problem?
Replies: 11
Views: 107

Re: When should one start rounding in a problem?

you should be as accurate as possible when doing you calculations and then round at the very end to accommodate for sig figs.
by Max Madrzyk Dis 4G
Fri Oct 04, 2019 1:43 pm
Forum: Significant Figures
Topic: When to round for sig figs?
Replies: 12
Views: 90

Re: When to round for sig figs?

No, you should only round for sig figs the you have your final answer.
by Max Madrzyk Dis 4G
Fri Oct 04, 2019 1:42 pm
Forum: Balancing Chemical Reactions
Topic: Combustion
Replies: 12
Views: 116

Re: Combustion

Yes, a combustion reaction always results in products of H2O and CO2.
by Max Madrzyk Dis 4G
Fri Oct 04, 2019 1:41 pm
Forum: Properties of Light
Topic: Amplitude? [ENDORSED]
Replies: 8
Views: 85

Re: Amplitude? [ENDORSED]

Amplitude of light wave I basically a measure or how tall the peaks are and how low the dips are in the wave.
by Max Madrzyk Dis 4G
Fri Oct 04, 2019 1:39 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Units in Answer
Replies: 18
Views: 171

Re: Units in Answer

I think you have to look at what the question is asking for in order to determine if the answer should be in grams or moles.

Go to advanced search