Search found 85 matches

by Cooper Baddley 1F
Fri Feb 21, 2020 4:00 pm
Forum: Balancing Redox Reactions
Topic: Oxidation Numbers
Replies: 9
Views: 24

Re: Oxidation Numbers

Break the molecule into each of its elements. Then use a periodic table to find the normal charge of each element. Then combine those to find the oxidation number.
by Cooper Baddley 1F
Fri Feb 21, 2020 3:55 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Electrode
Replies: 4
Views: 13

Re: Electrode

The Pt is more of a bridge for the electron that allows it to get from one side to the other so it can reduce.
by Cooper Baddley 1F
Fri Feb 21, 2020 3:53 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Standards
Replies: 2
Views: 13

Re: Standards

Standard points are your references that you would use if specified. Otherwise you will use the non standard value in a problem.
by Cooper Baddley 1F
Fri Feb 21, 2020 3:46 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: E v E(standard)
Replies: 4
Views: 12

Re: E v E(standard)

Anything standard is just that variable at standard conditions
by Cooper Baddley 1F
Fri Feb 21, 2020 3:35 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: E
Replies: 5
Views: 9

Re: E

Positive E means negative Delta G
by Cooper Baddley 1F
Tue Feb 11, 2020 10:13 pm
Forum: Calculating Work of Expansion
Topic: A system doing no work
Replies: 4
Views: 25

Re: A system doing no work

The systems we deal with now only have work when they expand or get compressed.
by Cooper Baddley 1F
Tue Feb 11, 2020 10:11 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: 4G.5
Replies: 1
Views: 9

Re: 4G.5

The Cis has more because each atom can be present in each plane while the trans structure only allows a certain atom in each plane which restricts the possible states.
by Cooper Baddley 1F
Tue Feb 11, 2020 10:09 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Pizza Rolls 3B
Replies: 2
Views: 30

Re: Pizza Rolls 3B

The formula for the phase change is Energy = mass*entalpy of fusion. You are given that half of the original 125g melts so you have 62.5g and then that the total energy is 234 KJ. Plug those in and solve for enthalpy of fusion.
by Cooper Baddley 1F
Tue Feb 11, 2020 10:04 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy of the System for irreversible expansions
Replies: 6
Views: 31

Re: Entropy of the System for irreversible expansions

State functions means that the path doesn't matter so it is the same.
by Cooper Baddley 1F
Tue Feb 11, 2020 12:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Pizza Rolls REVIEW Session DOWNLOAD HERE
Replies: 66
Views: 2242

Re: Pizza Rolls REVIEW Session DOWNLOAD HERE

ShastaB4C wrote:What did I do wrong? The answer is supposed to be 16 degrees Celsius

The ice goes through a phase change so you need to add that heat to the equation on the side of the ice.
by Cooper Baddley 1F
Fri Feb 07, 2020 9:23 am
Forum: Phase Changes & Related Calculations
Topic: Heating Curve Phase Changes
Replies: 11
Views: 28

Re: Heating Curve Phase Changes

It's flat when the energy in changes from being used to heat the substance to changing the phase of the substance
by Cooper Baddley 1F
Fri Feb 07, 2020 9:17 am
Forum: Calculating Work of Expansion
Topic: Reversible process and greatest work
Replies: 5
Views: 21

Re: Reversible process and greatest work

In a reversible reaction, the countless amount of small movements lead to more work being done when compared to an irreversible reaction where one big action is done causing there to be less overall work
by Cooper Baddley 1F
Fri Feb 07, 2020 9:11 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Combustion Reactions
Replies: 4
Views: 21

Re: Combustion Reactions

A combustion reaction always consist of the hydrocarbon plus O2 equaling CO2 plus H20 and in some cases nitrogen gas as well if it was present in the hydrocarbon
by Cooper Baddley 1F
Fri Feb 07, 2020 9:07 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: First Law
Replies: 6
Views: 35

Re: First Law

Energy is never destroyed in an isolated system just changes form. So the energy you begin with will be there in the end in some form or another.
by Cooper Baddley 1F
Fri Feb 07, 2020 9:05 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: reversible vs irreversible work
Replies: 7
Views: 27

Re: reversible vs irreversible work

In a problem, the big difference you need to spot is if the system is pushing against constant pressure or not. If it is it's irreversible but if the pressure changes its reversible.
by Cooper Baddley 1F
Fri Jan 31, 2020 4:32 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Test 1 # 4
Replies: 10
Views: 46

Re: Test 1 # 4

Ideal gas law but make sure you use the value of R that allows you to cancel your units correctly.
by Cooper Baddley 1F
Fri Jan 31, 2020 4:06 pm
Forum: General Science Questions
Topic: Extra Credit
Replies: 19
Views: 128

Re: Extra Credit

He has never mentioned extra credit so I wouldn't get your hopes up.
by Cooper Baddley 1F
Fri Jan 31, 2020 4:05 pm
Forum: General Science Questions
Topic: Midterms
Replies: 22
Views: 137

Re: Midterms

The midterm will cover everything before it. Test 2 will cover everything after the midterm to the test and then the final covers it all.
by Cooper Baddley 1F
Fri Jan 31, 2020 3:57 pm
Forum: Administrative Questions and Class Announcements
Topic: Math Resources
Replies: 8
Views: 23

Re: Math Resources

He post everything to the class website
by Cooper Baddley 1F
Wed Jan 29, 2020 5:50 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 4 Homework
Replies: 3
Views: 36

Re: Week 4 Homework

Both should be ok just stay close to the lectures.
by Cooper Baddley 1F
Thu Jan 23, 2020 12:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Test 1
Replies: 4
Views: 24

Re: Test 1

Outlines 1 and 2 are very important and make sure to know the relation between pH and concentration.
by Cooper Baddley 1F
Thu Jan 23, 2020 12:58 pm
Forum: Student Social/Study Group
Topic: midterm/final
Replies: 12
Views: 67

Re: midterm/final

The final in particular features overall concepts not just problems so while the test is pretty straight forward in their content the final is much more tricky.
by Cooper Baddley 1F
Thu Jan 23, 2020 12:56 pm
Forum: Phase Changes & Related Calculations
Topic: Calories vs calories
Replies: 5
Views: 13

Re: Calories vs calories

There are 1000 little calories in 1 Calorie. We use Calories when it comes to diet and calories when it comes to heat and energy.
by Cooper Baddley 1F
Thu Jan 23, 2020 12:53 pm
Forum: Phase Changes & Related Calculations
Topic: removing heat from system
Replies: 6
Views: 241

Re: removing heat from system

Exothermic means it releases heat so yes it will mean the temperature of the system decreases
by Cooper Baddley 1F
Thu Jan 23, 2020 12:42 pm
Forum: Ideal Gases
Topic: ICE table approximation
Replies: 10
Views: 25

Re: ICE table approximation

If the K value is less than 10^-3 and then if the percent protonation is less than 5% it is ok to take the shortcut.
by Cooper Baddley 1F
Thu Jan 16, 2020 3:41 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: How to make ICE box
Replies: 15
Views: 89

Re: How to make ICE box

Always leave out the solids and bases they will not be changed enough to be included.
by Cooper Baddley 1F
Thu Jan 16, 2020 2:34 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Approximation
Replies: 8
Views: 29

Re: Approximation

Ice tables seem to be useful only when it comes to calculating the number of products and reactants are present at equilibrium for a reaction.
by Cooper Baddley 1F
Thu Jan 16, 2020 2:32 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Protonation & Deprotonation
Replies: 9
Views: 33

Re: Protonation & Deprotonation

When referring to acids and bases protonation is gaining a proton so this usually refers to a base as they are the ones that gain an electron and deprotonation refers to the acid because they are the ones giving up a proton.
by Cooper Baddley 1F
Wed Jan 15, 2020 10:28 am
Forum: Administrative Questions and Class Announcements
Topic: Test 1
Replies: 7
Views: 38

Re: Test 1

Jasmine Vallarta 2L wrote:when is test 1?


It's in your week three discussion section
by Cooper Baddley 1F
Wed Jan 15, 2020 10:25 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE charts on tests/exams
Replies: 8
Views: 35

Re: ICE charts on tests/exams

You will have plenty of time on the test so you might as well.
by Cooper Baddley 1F
Thu Jan 09, 2020 3:21 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q
Replies: 10
Views: 30

Re: Q

Q is basically the same thing as K but the reaction is not at equilibrium, so yes it can.
by Cooper Baddley 1F
Thu Jan 09, 2020 3:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q vs K
Replies: 7
Views: 31

Re: Q vs K

K is the ratio of products over reactants at equilibrium, Q is the same thing not at equilibrium
by Cooper Baddley 1F
Thu Jan 09, 2020 2:46 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q versus K
Replies: 4
Views: 18

Re: Q versus K

K can only be taken when the reaction is at equilibrium while Q can be taken at any point and through comparing them we can see where the reaction is overall. Other than that they use the same formula and rules.
by Cooper Baddley 1F
Thu Jan 09, 2020 2:30 pm
Forum: Ideal Gases
Topic: K value
Replies: 14
Views: 60

Re: K value

The K value gives you the ratio of the products over the reactants so it being bigger or smaller tells you about the total concentration of each side of the ratio
by Cooper Baddley 1F
Wed Jan 08, 2020 3:19 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Re: Q and Ke: Small K value and Large K value
Replies: 7
Views: 23

Re: Q and Ke: Small K value and Large K value

The reaction quotient or Q is the ratio of the products over the reactants at whatever time you calculated the concentrations at. We then compare this ratio to the known K value or equilibrium constant to see if the reaction is still going and in what direction.
by Cooper Baddley 1F
Thu Dec 05, 2019 5:07 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: -ate
Replies: 11
Views: 67

Re: -ate

The metal has the -ate ending when the compound is the anion and has an overall negative charge
by Cooper Baddley 1F
Thu Dec 05, 2019 4:51 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: What is this?
Replies: 5
Views: 63

Re: What is this?

I would make sure to know the chart that he has posted on the website when it comes to naming
by Cooper Baddley 1F
Thu Dec 05, 2019 4:47 pm
Forum: Administrative Questions and Class Announcements
Topic: Final exam
Replies: 17
Views: 178

Re: Final exam

The questions will most likely look like the ones we had on the midterms and the two quizzes so it would be beneficial to look back over those.
by Cooper Baddley 1F
Thu Dec 05, 2019 4:45 pm
Forum: *Titrations & Titration Calculations
Topic: Wednesday Lecture
Replies: 3
Views: 44

Re: Wednesday Lecture

I think it was more something to think about when it comes to future classes but if you want to be safe you could make sure to know the overall points he is making in case they come up
by Cooper Baddley 1F
Mon Nov 25, 2019 5:52 pm
Forum: Naming
Topic: OH2 naming
Replies: 4
Views: 27

Re: OH2 naming

(OH2) is aqua
by Cooper Baddley 1F
Mon Nov 25, 2019 5:50 pm
Forum: Hybridization
Topic: Sigma and Pi Bonds
Replies: 21
Views: 70

Re: Sigma and Pi Bonds

Pi bonds only occur as the other bonds in double and triple bonds. For example, a double has one sigma and one pi bond and a triple bond has one sigma and two pi bonds.
by Cooper Baddley 1F
Mon Nov 25, 2019 5:47 pm
Forum: Naming
Topic: ferrate
Replies: 4
Views: 28

Re: ferrate

Ferrum refers to the latin name for iron and then the compound has an overall negative charge so you add ate to make it ferrate
by Cooper Baddley 1F
Mon Nov 25, 2019 4:18 pm
Forum: Hybridization
Topic: Bond angle/s character
Replies: 3
Views: 22

Re: Bond angle/s character

I understood this question as from sp3 to sp2 the bond angles increase from 109.5 to 120 so if it goes from sp2 to sp you would expect bond angles of 180 as it would be in a linear arrangement
by Cooper Baddley 1F
Mon Nov 25, 2019 4:08 pm
Forum: Air Pollution & Acid Rain
Topic: Clean Coal vs Dirty Coal?
Replies: 16
Views: 123

Re: Clean Coal vs Dirty Coal?

Dirty coal has more sulfur which then leads to acid rain vs clean coal which contains much less sulfur and contributes to acid rain less.
by Cooper Baddley 1F
Wed Nov 20, 2019 5:08 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: 3F.5 part c)
Replies: 2
Views: 26

Re: 3F.5 part c)

Both size means more electrons which means more polarizability which then leads to stronger London forces
by Cooper Baddley 1F
Wed Nov 20, 2019 5:07 pm
Forum: Dipole Moments
Topic: Hydrogen Bonds
Replies: 2
Views: 30

Re: Hydrogen Bonds

For a hydrogen bond to occur the N, O, and F also has to have a lone pair
by Cooper Baddley 1F
Wed Nov 20, 2019 5:02 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-Shaped ??
Replies: 9
Views: 76

Re: T-Shaped ??

AX3E2 is the only formula that leads to T-shaped as trigonal bipyramidal is the only shape that has those flat 90-degree equatorial bonds.
by Cooper Baddley 1F
Wed Nov 20, 2019 10:26 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Problem 3F.3c
Replies: 2
Views: 30

Re: Problem 3F.3c

The arrangement really doesn't matter in this case as all you would need to get from the lewis structure is that there are 4 areas of electron density around the central atom and that would make it have a tetrahedral shape and all the characteristics that come with it.
by Cooper Baddley 1F
Tue Nov 19, 2019 8:06 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 3
Views: 37

Re: Bond Angles

Yes, bonds are calculated with the electron pairs added in so even though there is a certain amount of density spots some are electron pairs that repel the actual bonds off of there new position.
by Cooper Baddley 1F
Tue Nov 19, 2019 8:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Why T-shape?
Replies: 4
Views: 26

Re: Why T-shape?

It is T-shaped as you are having the electron pairs occupy the equatorial spots in order to reduce the effect they will have on the bonds. In doing this you are left with one equatorial and the top and bottom leading to T-shaped.
by Cooper Baddley 1F
Tue Nov 19, 2019 6:13 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: Drawing dipoles
Replies: 3
Views: 29

Re: Drawing dipoles

The book brings up two methods one with the arrow pointing towards the negative and the other pointing towards the positive but Lavelle always has it point towards the negative so I would do that.
by Cooper Baddley 1F
Tue Nov 12, 2019 5:27 pm
Forum: DeBroglie Equation
Topic: When to Use
Replies: 8
Views: 53

Re: When to Use

If the problem says something about radiation, don't use DeBroglie as this does not have a mass, but anything else including an electron has mass and you will use this formula.
by Cooper Baddley 1F
Tue Nov 12, 2019 3:03 pm
Forum: Empirical & Molecular Formulas
Topic: Answering a Question without amount of elements
Replies: 1
Views: 39

Re: Answering a Question without amount of elements

You find the moles of the whole substance they are involved in and then multiply by the total number of the element is in the compound for example if its H2O and you want to get grams of hydrogen you find the moles of H2O and then multiply by 2 because 2 hydrogens are in H2O and then multiply by the...
by Cooper Baddley 1F
Tue Nov 12, 2019 2:38 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Writing full electron configuration
Replies: 3
Views: 42

Re: Writing full electron configuration

It seems like the only time 2Px, 2Py, 2Pz are ever important is just to understand the three shells in the p and how 6 valence electrons fit there, or to understand how the configuration is supposed to look.
by Cooper Baddley 1F
Sun Nov 10, 2019 5:33 pm
Forum: Electronegativity
Topic: Differences in Electronegativity
Replies: 5
Views: 27

Re: Differences in Electronegativity

The trend in the periodic table should be good enough as usually, the difference is pretty apparent and doesn't require actually knowing the values.
by Cooper Baddley 1F
Sun Nov 10, 2019 5:24 pm
Forum: Student Social/Study Group
Topic: midterm grades
Replies: 8
Views: 77

Re: midterm grades

Midterms back after the lecture on Wednesday and I'm guessing he will put out the key on the class website for the test that night.
by Cooper Baddley 1F
Sun Nov 10, 2019 11:04 am
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Dipole Arrows
Replies: 2
Views: 21

Re: Dipole Arrows

Lavelle has only mentioned the original convention with the arrow pointing towards the negative charge in class so I would say it's safe to stick with that one.
by Cooper Baddley 1F
Thu Nov 07, 2019 6:23 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 7
Views: 72

Re: Speed of Light

The value is given in normal meters/second fashion and you can convert it beyond that.
by Cooper Baddley 1F
Thu Nov 07, 2019 6:21 pm
Forum: General Science Questions
Topic: Week 6 homework problems
Replies: 7
Views: 66

Re: Week 6 homework problems

My guess is chemical bonds because it is the most recent focus we have gone through.
by Cooper Baddley 1F
Fri Nov 01, 2019 10:11 am
Forum: Lewis Structures
Topic: Identifying an element from a given Lewis Structure (3.37)
Replies: 3
Views: 475

Re: Identifying an element from a given Lewis Structure (3.37)

You don't need to use the formal charge equation for this problem just the total number of valence electrons. By finding the that that element accounts for five total valence electrons it points you to group 15 and the problem tells you it's in the third period so you go over to group 15 down to per...
by Cooper Baddley 1F
Fri Nov 01, 2019 10:01 am
Forum: Student Social/Study Group
Topic: Midterm question
Replies: 3
Views: 31

Re: Midterm question

I'm pretty sure he said the midterm is eight questions so my guess is that each outline is going to have 3 questions except for one and because we already had a test on the fundamentals I would think that would be the section to only have two questions, but that is all speculation.
by Cooper Baddley 1F
Wed Oct 30, 2019 4:32 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm
Replies: 4
Views: 32

Re: Midterm

We need to know all of outlines 1 and 2 and most of outline 3.
by Cooper Baddley 1F
Wed Oct 30, 2019 4:25 pm
Forum: Lewis Structures
Topic: Valence Electrons from Periodic Table
Replies: 10
Views: 77

Re: Valence Electrons from Periodic Table

The number of valence electrons for an element is equal to its group number starting at one on the left and moving to eight on the far right.
by Cooper Baddley 1F
Wed Oct 30, 2019 4:21 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity
Replies: 8
Views: 29

Re: Electron Affinity

It increases as you move left to right across the periodic table and up groups meaning elements such as Fluorine have very high electron affinity.
by Cooper Baddley 1F
Fri Oct 25, 2019 3:05 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 1E. 7 Ground state vs. Excited State
Replies: 2
Views: 28

Re: 1E. 7 Ground state vs. Excited State

The excited state of an atom is going to be a state where the electrons are arranged in a way that is not energy efficient meaning the only way it is possible is if there is extra energy present. For example, in part A of 1E.7 this represents an excited state of carbon because the last electron shou...
by Cooper Baddley 1F
Thu Oct 24, 2019 4:54 pm
Forum: Properties of Electrons
Topic: hw
Replies: 6
Views: 50

Re: hw

I think you can because we just started chemical bonds, next homework is probably going to be the first no Quantum World assignment.
by Cooper Baddley 1F
Thu Oct 24, 2019 4:43 pm
Forum: Ionic & Covalent Bonds
Topic: valence electrons
Replies: 6
Views: 58

Re: valence electrons

I think it comes from the element's unfilled outer orbital as it only has 5s2 and 5p3 which in total adds up to 5 valence electrons.
by Cooper Baddley 1F
Thu Oct 24, 2019 4:12 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: HW 1E.23
Replies: 4
Views: 43

Re: HW 1E.23

Finding unpaired electrons is easiest if you draw out the electron configuration first and then if done correctly the unpaired valence electrons are just the electrons don't have a pair in the configuration.
by Cooper Baddley 1F
Thu Oct 24, 2019 3:53 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configurations of ions
Replies: 4
Views: 22

Re: Electron Configurations of ions

You would start in the outermost shell as well because it is easier to remove electrons from there rather than spend the energy to remove it from an orbital closer to the nucleus.
by Cooper Baddley 1F
Sat Oct 19, 2019 4:45 pm
Forum: Properties of Electrons
Topic: Textbook 1B.21
Replies: 2
Views: 21

Re: Textbook 1B.21

You need to change the weight from ounces to kg and the velocity from miles per hour to m/s. Then just use the de Broglie relationship lamba= h/p or h/mv.
by Cooper Baddley 1F
Sat Oct 19, 2019 4:09 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Aufbau
Replies: 3
Views: 24

Re: Aufbau

The Aufbau principle states that you start filling the lower energy subshells before continuing on to the ones with the higher energy. So for example you wouldn't start filling up 2p before filling 2s
by Cooper Baddley 1F
Sat Oct 19, 2019 4:05 pm
Forum: Quantum Numbers and The H-Atom
Topic: Correlation Between n and l
Replies: 6
Views: 55

Re: Correlation Between n and l

The different values of l indicate which orbitals the electron can be on with l=0 meaning s-orbital l=1 meaning p-orbital l=2 meaning d-orbital l=3 meaning f orbital and so on.
by Cooper Baddley 1F
Sat Oct 19, 2019 3:59 pm
Forum: SI Units, Unit Conversions
Topic: midterm/final
Replies: 18
Views: 247

Re: midterm/final

Just going off test 1 and how that was all calculations I feel like all the test including the midterm and final are going to be calculated based and will not feature any short answer or essay questions.
by Cooper Baddley 1F
Thu Oct 17, 2019 10:10 am
Forum: General Science Questions
Topic: Pre-Calc and Calculus
Replies: 3
Views: 38

Re: Pre-Calc and Calculus

It doesn't seem like a big background in calculus is really needed for the class as all the math is usually done through plugging in values into many different equations, so as long as you understand how to work the equations and what values are what you should be fine without any additional math pr...
by Cooper Baddley 1F
Sun Oct 13, 2019 2:53 pm
Forum: Properties of Light
Topic: Photon Model
Replies: 3
Views: 23

Re: Photon Model

I like to think of them as little pieces of an overall bigger wave. It's like if you are looking at a group of birds flying the sky, you see the overall shape of them but that is made of each bird. Photons are like that as they form this overall wave but when it comes to the photoelectric test they ...
by Cooper Baddley 1F
Sun Oct 13, 2019 2:51 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Advice
Replies: 6
Views: 69

Re: Advice

I would say to pay attention to the outlines that are on the class website when it comes to concepts you may need to know for test and then I would make sure you have an understanding on how to do all the hw problems on the syllabus especially the ones towards the end as they are usually the hardest...
by Cooper Baddley 1F
Sun Oct 13, 2019 2:38 pm
Forum: Properties of Light
Topic: Speed of Light
Replies: 3
Views: 18

Re: Speed of Light

The constant for speed of light as (3.00 x 10^8 m/s) refers to the fastest light can travel as it is measured in a vacuum but as stated before it can slow down when it goes through different thicker mediums.
by Cooper Baddley 1F
Sun Oct 13, 2019 2:17 pm
Forum: Photoelectric Effect
Topic: #1B.3
Replies: 1
Views: 27

Re: #1B.3

I think it is D because of the behavior of the EMR that then leads to the emission of a particle. The idea that increasing the overall intensity of the light not leading to more electrons creates this idea that the light itself is acting as Einstein put it "packets of energy" as if it was ...
by Cooper Baddley 1F
Sat Oct 12, 2019 11:34 am
Forum: Significant Figures
Topic: Balancing Equations
Replies: 4
Views: 64

Re: Balancing Equations

Tips that have helped me in the past: 1. Save the molecules that are just one element until the end as they are very easy to deal with due to the singular element making them very helpful when it comes to making sure the final count is balanced. 2. Try and balance the elements that only appear in th...
by Cooper Baddley 1F
Sun Oct 06, 2019 3:13 pm
Forum: Administrative Questions and Class Announcements
Topic: powers of 10 in answers
Replies: 2
Views: 39

Re: powers of 10 in answers

I wouldn't think you would lose points if you don't go out of your way to use scientific notation, but if there are some problems that ask for the answer in grams but your answer came out in kilograms it would make sense to use scientific notion to switch the units over in the clearest way. If anyth...
by Cooper Baddley 1F
Sun Oct 06, 2019 2:58 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework Grading
Replies: 1
Views: 37

Re: Homework Grading

I don't know if different TAs have different grading policies but my TA made it sound like the HW problems are just graded quickly on a credit no credit basis because we already have the solution manual so I doubt we would get them back with any comments.
by Cooper Baddley 1F
Sun Oct 06, 2019 10:25 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Naming Formulas
Replies: 3
Views: 50

Re: Naming Formulas

I'm pretty sure in a lecture he touched on the fact that we don't know enough yet to write out the formulas for the chemical equations ourselves so he would give us the individual compounds next to their name and then you put it together.
by Cooper Baddley 1F
Sun Oct 06, 2019 10:19 am
Forum: Balancing Chemical Reactions
Topic: Advice for Test 1
Replies: 7
Views: 82

Re: Advice for Test 1

The email says its seven questions in 50 minutes and the first one is only on the review of high school topics. I would say the best way to prepare is just to go through all the problems on the syllabus in the first section and make sure you grasp the key concepts.
by Cooper Baddley 1F
Thu Oct 03, 2019 9:29 pm
Forum: SI Units, Unit Conversions
Topic: How many Sig Figs are necessary?
Replies: 4
Views: 67

How many Sig Figs are necessary?

If I am doing a problem and the answer needs to have 5 Sig Figs and the answer comes out to 0.001295 would you round and put a zero after the 9 (that becomes a 0 when you round up), leave it unrounded, or round without the zero?

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