Search found 73 matches

by Christy Lee 2H
Thu Mar 15, 2018 10:51 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Negative Ea
Replies: 3
Views: 143

Re: Negative Ea

No
by Christy Lee 2H
Thu Mar 15, 2018 12:06 am
Forum: Administrative Questions and Class Announcements
Topic: Lecture Friday
Replies: 4
Views: 310

Re: Lecture Friday

At the end of class
by Christy Lee 2H
Thu Mar 15, 2018 12:05 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: 15.85
Replies: 1
Views: 95

Re: 15.85

An activated complex is like a transition state, so you would draw out a transition state for the molecules.
by Christy Lee 2H
Thu Mar 15, 2018 12:03 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: reversible and perfect system
Replies: 1
Views: 244

Re: reversible and perfect system

For reversible reactions, deltaS total is 0. For perfect crystals, entropy is 0 at 0K.
by Christy Lee 2H
Tue Mar 13, 2018 8:29 pm
Forum: Administrative Questions and Class Announcements
Topic: Lecture Friday
Replies: 4
Views: 310

Re: Lecture Friday

Nope
by Christy Lee 2H
Tue Mar 13, 2018 7:44 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pre-Equilibrium Method Conditions
Replies: 2
Views: 104

Re: Pre-Equilibrium Method Conditions

It has to be a multi-step reaction where a fast step comes before a slow step.
by Christy Lee 2H
Tue Mar 13, 2018 7:44 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: steady-state
Replies: 1
Views: 98

Re: steady-state

We only need to do pre-equilibrium approach. We won't be doing the steady state approximation.
by Christy Lee 2H
Mon Mar 12, 2018 10:09 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 8.49
Replies: 1
Views: 86

8.49

For this question, why can we assume that the temperature is 298 K?
by Christy Lee 2H
Mon Mar 12, 2018 2:10 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Adsorption
Replies: 3
Views: 149

Re: Adsorption

Does adsorption only happen for a heterogeneous catalyst?
by Christy Lee 2H
Mon Mar 12, 2018 2:09 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation Energy Temperature Dependence
Replies: 5
Views: 375

Re: Activation Energy Temperature Dependence

Does what you described have to do with the frequency factor at all?
by Christy Lee 2H
Mon Mar 12, 2018 2:04 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Problem 15.61
Replies: 5
Views: 210

Re: Problem 15.61

Do you know where A went though?
by Christy Lee 2H
Mon Mar 12, 2018 1:59 pm
Forum: *Alcohols
Topic: Functional Groups on Final? [ENDORSED]
Replies: 5
Views: 675

Re: Functional Groups on Final? [ENDORSED]

He said whatever is discussed in lecture will be on final.
by Christy Lee 2H
Mon Mar 12, 2018 1:58 pm
Forum: *Alcohols
Topic: Functional group in final [ENDORSED]
Replies: 1
Views: 306

Re: Functional group in final [ENDORSED]

Only the functional groups in class. He said these are the most common.
by Christy Lee 2H
Mon Mar 12, 2018 1:32 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalysts
Replies: 3
Views: 137

Re: Catalysts

I believe in can be in the rate law.
by Christy Lee 2H
Mon Mar 12, 2018 1:31 am
Forum: Administrative Questions and Class Announcements
Topic: Organic Chem on Final
Replies: 9
Views: 522

Re: Organic Chem on Final

Since we went over Sn2 reactions in class, I think some ochem will be on the final.
by Christy Lee 2H
Mon Mar 12, 2018 1:29 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Ways to approach reaction mechanism
Replies: 2
Views: 125

Re: Ways to approach reaction mechanism

The direct computation method has a lot of advanced math that computers do, so we will not use it. We only need to know how to do the pre-equilibrium method which is where a slow step causes a bottleneck of the products from the step before, creating a pre-equilibrium.
by Christy Lee 2H
Mon Mar 12, 2018 1:24 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Example 15.7
Replies: 2
Views: 113

Re: Example 15.7

We do not need to know how to do the steady state approximation, but we do need to use pre-equilibrium conditions (both should give the same answer).
by Christy Lee 2H
Mon Mar 12, 2018 1:23 am
Forum: General Rate Laws
Topic: Rate law constant
Replies: 4
Views: 148

Re: Rate law constant

Since rates are always positive values, the rate constant k is always positive.
by Christy Lee 2H
Sun Mar 04, 2018 8:20 pm
Forum: First Order Reactions
Topic: radioactive decay
Replies: 4
Views: 153

Re: radioactive decay

Does this mean that radioactive decay only works for a reaction if there's one reactant since it's a first order reaction?
by Christy Lee 2H
Sun Mar 04, 2018 8:00 pm
Forum: General Rate Laws
Topic: Naming Clarification
Replies: 3
Views: 138

Re: Naming Clarification

Yes! They're the same.
by Christy Lee 2H
Thu Mar 01, 2018 9:50 am
Forum: General Rate Laws
Topic: Using more than one species [ENDORSED]
Replies: 1
Views: 94

Re: Using more than one species [ENDORSED]

Writing rate laws means using concentration of the reactants and a rate constant k. You will have to determine the order of each reactant to get the exponent and if it is 0 order, that reactant won't show up.
by Christy Lee 2H
Wed Feb 21, 2018 9:26 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Metal on ends of galvanic cell
Replies: 2
Views: 120

Re: Metal on ends of galvanic cell

Usually platinum is used as an inert metal electrode.
by Christy Lee 2H
Wed Feb 21, 2018 9:25 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Notation
Replies: 2
Views: 123

Re: Notation

Comma is for same phase and solid line is for different phase.
by Christy Lee 2H
Wed Feb 21, 2018 9:24 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cathode vs Anode
Replies: 4
Views: 194

Re: Cathode vs Anode

As long as solids are on the outsides, it does not matter.
by Christy Lee 2H
Wed Feb 21, 2018 9:23 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Electrode v. electrolyte
Replies: 1
Views: 206

Re: Electrode v. electrolyte

The electrode is the solid metal that conducts electricity, and the electrolyte is the aqueous solution with ions.
by Christy Lee 2H
Mon Feb 19, 2018 3:59 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 14.15A
Replies: 4
Views: 180

Re: 14.15A

For this problem the cell diagram in the solutions manual divides Ag(s) and AgBr(s) on the anode side with a vertical line. Can someone explain why they aren't separated by a comma even though they're the same phase?
by Christy Lee 2H
Fri Feb 16, 2018 9:22 pm
Forum: Balancing Redox Reactions
Topic: Salt Bridge Versus Pourous Disk
Replies: 6
Views: 237

Re: Salt Bridge Versus Pourous Disk

Both allow exchange of counter ions to maintain the charge difference while separating the atoms or elements that are actually involved in the redox reactions.
by Christy Lee 2H
Fri Feb 16, 2018 9:10 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Explaining 14.4 (Cell potential and gibbs)
Replies: 2
Views: 114

Re: Explaining 14.4 (Cell potential and gibbs)

I think that Ecell when we calculate it represents the maximum potential difference. SInce this potential difference can be used like a battery, we are talking about the maximum possible difference, but real-world batteries would not actually produce this much voltage.
by Christy Lee 2H
Fri Feb 16, 2018 9:08 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Potential in Galvanic/Voltaic Cells
Replies: 2
Views: 53

Re: Potential in Galvanic/Voltaic Cells

I think that since cell potential is also sensitive to the concentrations of reactants and products, you can set up a cell that will have a voltage difference because of differences in concentration. So even though both sides have the same molecule or element, the difference in concentrations will c...
by Christy Lee 2H
Wed Feb 07, 2018 9:27 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bonds Broken - Bonds Formed?
Replies: 2
Views: 159

Re: Bonds Broken - Bonds Formed?

It takes energy to break bonds (positive enthalpy) and releases energy to form bonds (negative enthalpy) and then you add those enthalpies together. You could also do broken-formed but make sure you use bond enthalpies directly.
by Christy Lee 2H
Wed Feb 07, 2018 9:25 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: 9.47
Replies: 1
Views: 78

Re: 9.47

For a reversible process, the reaction is assumed to be at equilibrium which means deltaS of the universe is zero because there is no entropy change at equilibrium.
by Christy Lee 2H
Wed Feb 07, 2018 9:16 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Spontaneity
Replies: 9
Views: 418

Re: Spontaneity

Negative delta G is spontaneous because free energy goes from a higher energy state to a lower energy state which is favorable.
by Christy Lee 2H
Sun Feb 04, 2018 8:24 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: 9.13
Replies: 7
Views: 225

Re: 9.13

Lavelle's formula sheet gives the approximation for monatomic ideal gases only, which is why it says 3/2R. For diatomic ideal gases, the approximation is 5/2R.
by Christy Lee 2H
Tue Jan 30, 2018 5:10 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: 9.13
Replies: 7
Views: 225

Re: 9.13

I think for the first part of the problem we have to use nR but the second part is the one where we have to use C. And on the solution errors page it says to use Cv but it also says 5/2R
by Christy Lee 2H
Tue Jan 30, 2018 5:00 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: 9.13
Replies: 7
Views: 225

Re: 9.13

How do we know whether to use Cv or Cp though? I thought the volume and pressure were both changing???
by Christy Lee 2H
Sun Jan 28, 2018 4:11 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Pressure in Reversible Pathways [ENDORSED]
Replies: 1
Views: 131

Pressure in Reversible Pathways [ENDORSED]

Can someone please explain why pressure decreases in a reversible pathway? I'm confused by the graph that was in the notes comparing reversible and irreversible pathways. Thanks!
by Christy Lee 2H
Fri Jan 26, 2018 12:26 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Formula confusion [ENDORSED]
Replies: 2
Views: 69

Formula confusion [ENDORSED]

Can someone explain the difference between and ?
by Christy Lee 2H
Fri Jan 26, 2018 12:02 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: State properties of heat and enthalpy
Replies: 2
Views: 146

State properties of heat and enthalpy

Why is enthalpy a state property and heat not a state property?
by Christy Lee 2H
Fri Jan 19, 2018 4:25 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: P delta V is significant?
Replies: 2
Views: 191

P delta V is significant?

Can someone explain why P delta V is insignificant when there's a reaction with constant P that involves solids and liquids? Thanks!
by Christy Lee 2H
Thu Jan 18, 2018 4:04 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Adiabatic [ENDORSED]
Replies: 8
Views: 366

Adiabatic [ENDORSED]

My TA mentioned this during discussion, but can someone explain what adiabatic means?
by Christy Lee 2H
Thu Jan 18, 2018 3:57 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Reversible, Irreversible
Replies: 4
Views: 210

Reversible, Irreversible

Can someone explain the difference between reversible and irreversible reactions?
by Christy Lee 2H
Thu Jan 11, 2018 4:50 pm
Forum: Phase Changes & Related Calculations
Topic: Temperature during phase changes [ENDORSED]
Replies: 4
Views: 272

Temperature during phase changes [ENDORSED]

Why does the temperature stay the same during phase changes?
by Christy Lee 2H
Thu Jan 11, 2018 4:31 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpies vs. Standard Enthalpies of Formation
Replies: 2
Views: 88

Bond Enthalpies vs. Standard Enthalpies of Formation

What's the difference between bond enthalpies vs standard enthalpies of formation?
by Christy Lee 2H
Thu Jan 11, 2018 4:25 pm
Forum: Phase Changes & Related Calculations
Topic: ∆Hsub= ∆Hfus+ ∆Hvap
Replies: 4
Views: 405

∆Hsub= ∆Hfus+ ∆Hvap

Can someone explain me how ∆Hsub= ∆Hfus+ ∆Hvap?
by Christy Lee 2H
Sat Dec 09, 2017 12:42 am
Forum: Lewis Acids & Bases
Topic: CaO (s) in H2O
Replies: 1
Views: 192

Re: CaO (s) in H2O

CaO is a strong base, so it dissociates into Ca2+ and O2-. The O2- accepts a proton from water to form OH-. Since this creates a basic solution, CaO is a base.
by Christy Lee 2H
Sat Dec 09, 2017 12:39 am
Forum: Amphoteric Compounds
Topic: Amphoteric [ENDORSED]
Replies: 4
Views: 467

Re: Amphoteric [ENDORSED]

Metal oxides tend to be bases, while non-metal oxides tend to be acids. There is a diagonal band similar to the metalloid band and those oxides are amphoteric. I think you can find that in the textbook.
by Christy Lee 2H
Sat Dec 09, 2017 12:38 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH Significant Figures
Replies: 1
Views: 109

Re: pH Significant Figures

I think only digits after the decimal place are considered significant. For example, pH of 4.23 would be 2 sig figs.
by Christy Lee 2H
Tue Dec 05, 2017 12:21 am
Forum: Calculating the pH of Salt Solutions
Topic: Salt + Water?
Replies: 2
Views: 294

Re: Salt + Water?

In lecture, Dr. Lavelle said "almost always" so there are probably some exceptions. For example, autoprotolysis where water acts as an acid and a base does not produce a salt. But for the most part, acids and bases will react to form salt and water.
by Christy Lee 2H
Tue Dec 05, 2017 12:08 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Endothermic v. Exothermic Reactions
Replies: 9
Views: 888

Re: Endothermic v. Exothermic Reactions

In endothermic reactions, heat is consumed or absorbed to move the reaction forward. In exothermic reactions, heat is released or given off. You can think of endothermic reactions as having heat as a reactant, whereas exothermic reactions have heat as a product.
by Christy Lee 2H
Sat Dec 02, 2017 10:40 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Molecular Orbital Theory
Replies: 4
Views: 229

Re: Molecular Orbital Theory

It is not on the syllabus or any of the outlines or homeworks, so we do not need to know it for the final:)
by Christy Lee 2H
Sat Dec 02, 2017 10:35 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: difference in acids
Replies: 3
Views: 255

Re: difference in acids

Bronsted vs Lewis definitions are just focusing on different aspects of the molecule to determine acidity and basicity. Using either definition will lead to the same answer. For example, a Lewis acid is the same as a Bronsted acid, but if you say Lewis acid you are focusing on the ability of the mol...
by Christy Lee 2H
Sat Dec 02, 2017 10:33 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentates
Replies: 1
Views: 119

Re: Polydentates

It might help to draw it out, but in general, I usually look for nitrogens with lone pairs and oxygens with a negative formal charge because these most commonly act as binding sites in coordination compounds. Then I count how many there are, and that is how I determine what kind of dentate it is. Ho...
by Christy Lee 2H
Fri Nov 24, 2017 12:13 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Partial Pressure or Concentration
Replies: 3
Views: 158

Partial Pressure or Concentration

How do I know when to use partial pressure or concentration when calculating the equilibrium constant?
by Christy Lee 2H
Sun Nov 19, 2017 5:09 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands
Replies: 2
Views: 123

Ligands

Why are ligands Lewis bases?
by Christy Lee 2H
Sun Nov 19, 2017 5:06 pm
Forum: Hybridization
Topic: Hybrid orbitals and bonds
Replies: 3
Views: 140

Hybrid orbitals and bonds

How do hybridized orbitals relate to sigma and pi bonds?
by Christy Lee 2H
Sun Nov 12, 2017 3:23 pm
Forum: Dipole Moments
Topic: Dipole Moments
Replies: 2
Views: 158

Dipole Moments

How do I know when dipole moments cancel?
by Christy Lee 2H
Sun Nov 12, 2017 3:08 pm
Forum: Lewis Structures
Topic: Midterm Question CH3SH
Replies: 5
Views: 302

Re: Midterm Question CH3SH

Yes I got that too.
by Christy Lee 2H
Sun Nov 05, 2017 8:37 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: HW 3.83
Replies: 6
Views: 700

Re: HW 3.83

Polarizing power and polarizability are opposites. Polarizing power refers to the cation's ability to pull electrons toward it, so when the atom is smaller, there are less electrons, so the anion will be closer to the nucleus and feel a stronger pull. Polarizability is how easily an atom's electron ...
by Christy Lee 2H
Sun Nov 05, 2017 8:30 pm
Forum: Lewis Structures
Topic: Beryllium and Lithium
Replies: 2
Views: 152

Beryllium and Lithium

Why don't Lithium and Beryllium have full octet when drawing Lewis structures?
by Christy Lee 2H
Fri Oct 27, 2017 10:25 pm
Forum: Significant Figures
Topic: How to solve #18 Post-Assessment [ENDORSED]
Replies: 1
Views: 198

Re: How to solve #18 Post-Assessment [ENDORSED]

You would have to calculate what exactly 1% of the hydrogen radius is, and then use that as your deltaX (uncertainty in position) in the Heisenberg uncertainty formula. Then you would solve for deltaV which is the uncertainty in velocity. Hope this helps! :)
by Christy Lee 2H
Fri Oct 27, 2017 10:21 pm
Forum: Lewis Structures
Topic: Lewis Structures- resonance [ENDORSED]
Replies: 4
Views: 273

Re: Lewis Structures- resonance [ENDORSED]

For the nitrate example, any of the three resonance structures are correct if the questions just asks for a lewis structure. However, we just have to understand that the real structure is a blend of the three. For other examples though, we would have to look at formal charges to determine which is t...
by Christy Lee 2H
Fri Oct 27, 2017 10:18 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Electron affinity
Replies: 4
Views: 239

Re: Electron affinity

Nuclear charge plays a role because higher nuclear charge will have a greater pull on electrons which means higher electron affinity, which is why electron affinity increases going across a row. The almost-full valence shell is another way of thinking about it, because atoms want to have noble gas c...
by Christy Lee 2H
Sat Oct 21, 2017 10:59 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: orbitals an shells [ENDORSED]
Replies: 5
Views: 397

Re: orbitals an shells [ENDORSED]

Can you clarify the difference between shells and subshells?
by Christy Lee 2H
Sat Oct 21, 2017 10:46 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: s-electrons and p-electrons [ENDORSED]
Replies: 2
Views: 181

s-electrons and p-electrons [ENDORSED]

Can someone explain why s-electrons have a lower energy than p-electrons? Confused because their energy differs even though they're in the same shell??
by Christy Lee 2H
Sun Oct 15, 2017 12:14 pm
Forum: *Black Body Radiation
Topic: Black body for quiz 2 [ENDORSED]
Replies: 11
Views: 802

Re: Black body for quiz 2 [ENDORSED]

I am pretty sure Dr. Lavelle said we would not be covering black bodies, so you will not need to know Wien's law or Stephen Boltzmann law.
by Christy Lee 2H
Sun Oct 15, 2017 12:12 pm
Forum: Properties of Light
Topic: Concept // Wave-like Behavior [ENDORSED]
Replies: 4
Views: 248

Re: Concept // Wave-like Behavior [ENDORSED]

I believe the way light reflects, refracts, diffracts, and interferes all point to its wave-like characteristics.
by Christy Lee 2H
Sun Oct 15, 2017 12:10 pm
Forum: DeBroglie Equation
Topic: Units for Mass [ENDORSED]
Replies: 3
Views: 193

Re: Units for Mass [ENDORSED]

When doing the work for some of the problems, it will be necessary to change units to kilograms depending on what units the constants have that you use in your equations. But for finals answers, you can leave your answer in grams or kilograms as long as you have the right sig figs and right conversi...
by Christy Lee 2H
Sun Oct 15, 2017 12:08 pm
Forum: DeBroglie Equation
Topic: Post-Module Assessment #35 [ENDORSED]
Replies: 2
Views: 241

Re: Post-Module Assessment #35 [ENDORSED]

I think that only very very small objects have wavelike particles, and when they get too big, the wavelike properties are basically negligible, which is why they say electric cars would not have wavelike properties.
by Christy Lee 2H
Fri Oct 13, 2017 9:51 am
Forum: Properties of Electrons
Topic: Threshold level and Work Function [ENDORSED]
Replies: 6
Views: 446

Re: Threshold level and Work Function [ENDORSED]

Yes they're the same thing
by Christy Lee 2H
Mon Oct 09, 2017 11:57 pm
Forum: Properties of Light
Topic: Converting to Different Units
Replies: 3
Views: 177

Re: Converting to Different Units

We will need to know what the prefixes mean so we can convert between them, like knowing that 10^12 picometers are in one meter. These conversions will not be given, so we have to remember what each prefix means. Hope this helps!
by Christy Lee 2H
Sat Oct 07, 2017 10:53 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 115
Views: 10248

Re: All students read this sig fig post [ENDORSED]

In a multistep problem, should we use sig figs with every step, or only when it comes to the final answer? Will we be penalized if we use more than the amount of sig figs in intermediate steps but have the correct amount for the final answer? I am pretty sure we are supposed to only use sig figs in...
by Christy Lee 2H
Sat Oct 07, 2017 10:48 pm
Forum: Empirical & Molecular Formulas
Topic: Calculating ratios when finding molecular formulas [ENDORSED]
Replies: 2
Views: 202

Re: Calculating ratios when finding molecular formulas [ENDORSED]

It should come out to a whole number when you are trying to find out what to multiply the empirical formula by in order to get the molecular formula. Otherwise, there might have been a calculation error. Hope this helps! :)

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