Search found 70 matches
- Thu Mar 15, 2018 8:36 pm
- Forum: *Enzyme Kinetics
- Topic: 15.85
- Replies: 2
- Views: 839
15.85
How do you figure out how to draw a proposed structure for an activated complex? Will we be expected to know this for the test?
- Mon Mar 12, 2018 12:15 pm
- Forum: Experimental Details
- Topic: Final [ENDORSED]
- Replies: 4
- Views: 1413
Re: Final [ENDORSED]
No but we do need to know how to analyze experimental data
- Mon Mar 12, 2018 12:13 pm
- Forum: *Alcohols
- Topic: functional groups [ENDORSED]
- Replies: 4
- Views: 1765
Re: functional groups [ENDORSED]
I don’t know if there are any practice problems but I would know identifying factors for each group as well as be able to identify them in a molecule.
- Mon Mar 12, 2018 12:12 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalyst Example from lecture 3/12
- Replies: 3
- Views: 543
Re: Catalyst Example from lecture 3/12
What was the purpose of the UV? Was it only to reach the activation energy?
- Wed Mar 07, 2018 11:38 am
- Forum: General Rate Laws
- Topic: Unique Reaction Rates [ENDORSED]
- Replies: 45
- Views: 162319
Re: Unique Reaction Rates [ENDORSED]
I'm pretty sure the unique rate is the same for every reactant, so you just wouldn't take the stoichiometric coefficients into account.
- Wed Mar 07, 2018 11:36 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Trends in Increasing Reducing Ability
- Replies: 5
- Views: 831
Re: Trends in Increasing Reducing Ability
The more negative the E standard for a given half reaction is, the less likely that reaction is to take place in the given reduction state. If you think about it, a more negative E standard yields a more positive delta G with a lowered likelihood of spontaneity. So the higher value will be reduced a...
- Wed Mar 07, 2018 11:20 am
- Forum: Balancing Redox Reactions
- Topic: Test #2
- Replies: 4
- Views: 729
Re: Test #2
If K>1 then that means the reaction favors the products, so the reaction is spontaneous.
- Wed Mar 07, 2018 11:19 am
- Forum: Balancing Redox Reactions
- Topic: Test #2
- Replies: 4
- Views: 729
Re: Test #2
You would look up the half reactions given in the table for Ag and Cu, and put together the half reactions to get the full balanced redox reaction. You would then use the given E standard values for the half reactions in order to solve for E standard for the full reaction. This can get you the value...
- Mon Feb 26, 2018 3:17 pm
- Forum: First Order Reactions
- Topic: Negative Rates
- Replies: 4
- Views: 967
Re: Negative Rates
A negative rate would mean the reaction is occurring in the backwards direction.
- Mon Feb 26, 2018 3:15 pm
- Forum: Zero Order Reactions
- Topic: Zero Order Meaning
- Replies: 5
- Views: 1236
Re: Zero Order Meaning
Will a zero order reaction mean that changing the concentrations will result in no change?
- Mon Feb 26, 2018 3:14 pm
- Forum: First Order Reactions
- Topic: First order reactions vs second order reactions [ENDORSED]
- Replies: 3
- Views: 874
Re: First order reactions vs second order reactions [ENDORSED]
The order of a reaction refers to the index, or exponent, to which its concentration term in the rate equation is raised.
- Mon Feb 19, 2018 9:25 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 14.15
- Replies: 1
- Views: 2632
Re: 14.15
Also how do you know to add KOH to the left side of the cell diagram. Why do you add Ni (s) on the right side of the cell diagram as the conducting electrode even though there is solid metal present? Help
- Mon Feb 19, 2018 9:12 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 14.15
- Replies: 1
- Views: 2632
14.15
Will we be provided the half reactions used in problem 15?
- Mon Feb 19, 2018 8:49 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: HW 14. 15 part a
- Replies: 1
- Views: 11633
HW 14. 15 part a
For homework problem 15 part a how do you get the half reactions displayed? Ag solid is not displayed in the skeleton reaction so how would you know to add this
- Mon Feb 19, 2018 8:45 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 14.15a
- Replies: 1
- Views: 446
Re: 14.15a
You only use a comma if both are in the aqueous state and therefore in the same solution
- Mon Feb 19, 2018 8:28 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 4.13 part b
- Replies: 1
- Views: 372
4.13 part b
Why is the Pt necessary on the left side. I thought it was only necessary when there is no solid metal present, but there is I2 solid present. The solutions manual explained that it is because both oxidized and reduced species are in the same solution, but how do we know that it wasn't given to us. ...
- Mon Feb 19, 2018 8:26 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 14.13
- Replies: 5
- Views: 821
Re: 14.13
The more negative E is the one that is reduced. So, yes that is an accurate way to determine which side.
- Mon Feb 19, 2018 2:41 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: oxi/red potentials
- Replies: 1
- Views: 400
Re: oxi/red potentials
No there won't. If there are two negative reduction potentials, the more negative one will be reduced and the other will be oxidized, even if it isn't as favorable. The transferred electrons will always cancel out of the overall reaction, so one half reaction must gain electrons and the other must l...
- Mon Feb 19, 2018 2:39 pm
- Forum: Balancing Redox Reactions
- Topic: Are we going to be given the periodic table for test 2?
- Replies: 1
- Views: 412
Re: Are we going to be given the periodic table for test 2?
We weren't given it for the midterm, but I would assume if we need it to do a problem (to calculate moles or something) we would be given it. If we aren't, there is likely another way to do the problem.
- Mon Feb 19, 2018 2:38 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: calculating potentials with electrolysis
- Replies: 1
- Views: 602
Re: calculating potentials with electrolysis
Anything he assigns us in problems is fair game for a test, so I would know how to calculate potentials with electrolysis.
- Wed Feb 14, 2018 11:35 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Equations [ENDORSED]
- Replies: 1
- Views: 475
Equations [ENDORSED]
Which delta S and delta G equations will be helpful to know for the midterm that are not given on the equation sheet?
- Mon Feb 12, 2018 1:06 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: cis vs trans [ENDORSED]
- Replies: 4
- Views: 2607
Re: cis vs trans [ENDORSED]
It has to do with the degeneracy and total possible position orientations. Cis and trans are just two examples of possible orientations of a molecule.
- Mon Feb 12, 2018 1:04 pm
- Forum: Phase Changes & Related Calculations
- Topic: Reversible
- Replies: 5
- Views: 1091
Re: Reversible
The reversible expansion of an ideal gas has a pressure that is not constant, which causes us to need an integral to find the area under the curve which is w=-nRTln(V2/V1) The irreversible expansion is against a constant external pressure, so the calculation is easier and we can just use the area of...
- Mon Feb 12, 2018 1:01 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Equipartition Theorem
- Replies: 1
- Views: 354
Re: Equipartition Theorem
The equipartition theorem states that energy is shared equally amongst all energetically accessible degrees of freedom of a system. The application that I can think of is calculating degeneracy and assuming energy is equally distributed. I don't think we learned any ways of using this in a calculati...
- Mon Feb 05, 2018 3:21 pm
- Forum: Calculating Work of Expansion
- Topic: Integral [ENDORSED]
- Replies: 4
- Views: 856
Integral [ENDORSED]
Will any of the calculations actually require using the integral to solve?
- Mon Feb 05, 2018 3:16 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Evaluation 9.3A
- Replies: 2
- Views: 521
Re: Evaluation 9.3A
Vi = 1 L
Vf = 3 L
Then use the equation delta S = R ln(Vf/Vi)
Vf = 3 L
Then use the equation delta S = R ln(Vf/Vi)
- Mon Feb 05, 2018 3:06 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Heat Capacity Value
- Replies: 2
- Views: 407
Re: Heat Capacity Value
Yes this equation is only used for ideal gases and calculated using properties of ideal gases.
- Mon Feb 05, 2018 3:01 pm
- Forum: Balancing Redox Reactions
- Topic: Memorization Technique [ENDORSED]
- Replies: 2
- Views: 602
Re: Memorization Technique [ENDORSED]
Thanks for the tip!
- Mon Jan 29, 2018 7:41 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs Free Energy [ENDORSED]
- Replies: 6
- Views: 1306
Re: Gibbs Free Energy [ENDORSED]
Gibbs free energy is a term that defines whether a reaction will be spontaneous or not. It combines the entropy and enthalpy (delta H) to determine the favorability of a reaction.
- Mon Jan 29, 2018 7:38 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Entropy and Disorder
- Replies: 2
- Views: 454
Re: Entropy and Disorder
Dr. Lavelle just said he didn't use the term disorder in his description. I think it should be fine to use it in a description.
- Mon Jan 29, 2018 7:37 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Equations
- Replies: 2
- Views: 429
Re: Equations
No we don't need to know how to derive equations. Just plug in variables and solve.
- Sun Jan 21, 2018 5:20 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hesss Law
- Replies: 6
- Views: 534
Re: Hesss Law
We discussed this in class and there were several problems on it in the homework so I would say yes.
- Sun Jan 21, 2018 5:20 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Integrated Exercise and Applied Exercises
- Replies: 1
- Views: 295
Re: Integrated Exercise and Applied Exercises
Anything discussed in class or given through homework questions I would say is fair to appear on a test. Dr. Lavelle did say that there are sometimes questions on the homework that are more difficult than test problems but I would still understand how to do every problem.
- Sun Jan 21, 2018 5:15 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: delta U and delta h
- Replies: 1
- Views: 349
Re: delta U and delta h
H = U +PV ΔH = Δ(U + PV) ΔH = ΔU = Δ(PV) At constant pressure, ΔH = ΔU + PΔV So if you are at constant pressure and constant volume, then ΔH = ΔU + P(0) and therefore ΔH = ΔU If we don't have ΔV but we have other info (still at constant P) PV = nRT V = nRT/P If we are at constant P and T then only n...
- Mon Jan 15, 2018 3:20 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: units for enthalpies
- Replies: 1
- Views: 393
units for enthalpies
I've noticed that sometimes enthalpies are used in units of kJ and sometimes in kJ/mol. How do we know which is right to use when? I assumed that it was when an enthalpy is multiplied by a certain number of moles for a particular reaction but on problem 8.67 part b when it multiplies kJ/mol with mol...
- Mon Jan 15, 2018 12:31 pm
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: Energy Density
- Replies: 10
- Views: 4810
Re: Energy Density
A higher energy density will lead to a higher total amount of energy for a given volume, which will lead to a higher amount of energy overall. I.E. the car will drive further with a higher energy density given a set volume of the gas tank.
- Mon Jan 15, 2018 12:28 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Specific Heat Capacities
- Replies: 3
- Views: 378
Re: Specific Heat Capacities
The only circumstance I can think of is if we are provided all the necessary information to calculate them.
- Mon Jan 15, 2018 12:28 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Specific Heat Capacities
- Replies: 3
- Views: 378
Re: Specific Heat Capacities
In the problems we have been given, heat capacities have been provided, so I think it is safe to assume we will be given them on tests/exams.
- Mon Jan 15, 2018 12:24 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat capacity at constant pressure vs. constant volume [ENDORSED]
- Replies: 1
- Views: 461
Re: Heat capacity at constant pressure vs. constant volume [ENDORSED]
According to my understanding, at constant volume, all the heat energy is devoted to raising the temperature of the system, and no external work is done. When the reaction takes place at a constant pressure and not a constant volume, some of the heat energy does external work by expanding the system...
- Wed Jan 10, 2018 1:51 pm
- Forum: Phase Changes & Related Calculations
- Topic: Expansion Work
- Replies: 3
- Views: 615
Re: Expansion Work
I think that is right that non-expansion work is specifically work where volume does not change
- Wed Jan 10, 2018 1:48 pm
- Forum: Calculating Work of Expansion
- Topic: Work vs. Work Function
- Replies: 2
- Views: 452
Re: Work vs. Work Function
The work function has to do with the amount of work required to remove one electron from an atom.
- Wed Jan 10, 2018 1:46 pm
- Forum: Phase Changes & Related Calculations
- Topic: Endothermic Reaction
- Replies: 10
- Views: 9418
Re: Endothermic Reaction
As described above, ice melting is an endothermic reaction because it requires heat for the reaction to take place. As a result, surroundings, in Dr. Lavelle's example, one's hand, will cool down because the heat required for the reaction is absorbed from the surroundings (conservation of energy).
- Wed Dec 06, 2017 5:38 pm
- Forum: Bronsted Acids & Bases
- Topic: What is meant by acids and bases?
- Replies: 2
- Views: 379
Re: What is meant by acids and bases?
Both definitions of acids and bases refer to the same types of reactions. An acid is what likely loses a proton, which also means it will gain an electron pair to maintain it's octet. An acid will gain a proton but lose an electron pair to keep each atom at an octet. The test covers the problems and...
- Mon Dec 04, 2017 8:36 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Effect of Temperature
- Replies: 2
- Views: 572
Re: Effect of Temperature
With changing temperature, Kw changes. For example, with water, pH will always be the same as pOH, but with increasing temperature, both values decrease due to an increasing Kw value (this relationship is a result of pH and pOH having a -log relationship to Kw).
- Mon Dec 04, 2017 8:33 pm
- Forum: Conjugate Acids & Bases
- Topic: Strong vs Weak Acids/bases
- Replies: 4
- Views: 889
Re: Strong vs Weak Acids/bases
The main distinction is definitely that strong acids dissociate more easily. It is also important to remember what Professor Lavelle discussed in class today (12/04/17) to help identify stronger vs. weak acids. Strong acids lose H+ easily and resulting anions are stable.
- Tue Nov 21, 2017 12:06 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2954745
Re: Post All Chemistry Jokes Here
Proton: "I think I lost an electron"
Neutron: "Are you positive?"
Neutron: "Are you positive?"
- Tue Nov 21, 2017 12:03 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 11.117 (b)
- Replies: 1
- Views: 338
Re: 11.117 (b)
Because you are given both moles and volume of each of the products and reactants except for NO, you can calculate each of their concentrations. Plugging in to the equilibrium equation using concentrations, you can solve for concentration of NO. Given it is in a 1 L container, you can use the concen...
- Tue Nov 21, 2017 12:01 pm
- Forum: Ideal Gases
- Topic: Example in Monday's Lecture
- Replies: 3
- Views: 661
Re: Example in Monday's Lecture
If you calculate K (forwards) for the forward reaction, the backwards reaction has a K (backwards) value that is the inverse of the K (forwards). This is because you calculate using a ratio of the concentration of reactants to the power of stoichiometric coefficients and products to the power of the...
- Tue Nov 21, 2017 11:58 am
- Forum: Hybridization
- Topic: Writing Hybridization
- Replies: 3
- Views: 562
Re: Writing Hybridization
Lavelle says both ways will be accepted on a test and doesn't matter. Both ways are correct.
- Tue Nov 21, 2017 11:56 am
- Forum: Naming
- Topic: naming ligands
- Replies: 2
- Views: 461
Re: naming ligands
There are different ways of naming coordination compounds. Lavelle showed us the most common way, but he said he will accept both on a test. Both are correct ways of naming coordination compounds still.
- Tue Nov 14, 2017 3:20 pm
- Forum: Ionic & Covalent Bonds
- Topic: different types of bonds
- Replies: 6
- Views: 843
Re: different types of bonds
Ionic bonds usually consist of a metal and a nonmental, or any compound with a difference of electronegativity greater than 2. Nonpolar molecules are ones with dipole moments (differences in electronegativity) that cancel out. Polar dipole moments do not cancel.
- Tue Nov 14, 2017 3:18 pm
- Forum: Trends in The Periodic Table
- Topic: s-block vs p-block
- Replies: 5
- Views: 3208
Re: s-block vs p-block
Since metals usually lose electrons in reactions, metals in the s-block have less electrons to lose and therefore are more likely to participate in a reaction. P-block metals have a few more electrons to lose to take part in a reaction and are less likely to form a compound or take part in a reaction.
- Tue Nov 14, 2017 3:17 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: CO2 vs. H2O
- Replies: 6
- Views: 6620
Re: CO2 vs. H2O
h20 is not linear, and it's dipole moments do not cancel. If you draw dipole moments on co2 then you see that they cancel out, making co2 nonpolar.
- Tue Nov 14, 2017 3:15 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: 3.49 (c) Oxygen's electrons
- Replies: 3
- Views: 823
Re: 3.49 (c) Oxygen's electrons
When drawing Lewis structures, you count up total valence electrons for each atoms and draw bonds and lone pairs accordingly. If you follow the procedure established in lecture, you should get the diagram correctly.
- Thu Nov 09, 2017 10:33 am
- Forum: Limiting Reactant Calculations
- Topic: Two Limiting Reactants
- Replies: 5
- Views: 9712
Re: Two Limiting Reactants
Two reactants cannot limit each other. There is too little of one or the other, or they are present in the correct ratio, where they both would be used up completely and neither is limiting the other.
- Mon Nov 06, 2017 8:42 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Electron Spin Quantum Number [ENDORSED]
- Replies: 12
- Views: 4004
Re: Electron Spin Quantum Number [ENDORSED]
Electrons also fill each orbital in a subshell all with spin facing a certain direction (either +/- 1/2) before refilling the orbitals with the opposite spin.
- Mon Nov 06, 2017 8:29 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Delta Positive / Negative
- Replies: 3
- Views: 4853
Re: Delta Positive / Negative
Every covalent bond has some ionic character, so it is important to depict which atom pulls the electrons towards it slightly more (depicted with delta negative).
- Wed Nov 01, 2017 12:15 pm
- Forum: Trends in The Periodic Table
- Topic: Diagonal Relationships- 2.73
- Replies: 2
- Views: 479
Re: Diagonal Relationships- 2.73
The book used the example that a diagnoal relationship can include similar properties in size, due to periodicity trends (increasing down a period and up a group)
- Wed Nov 01, 2017 12:13 pm
- Forum: Octet Exceptions
- Topic: Octet Rule Clarification
- Replies: 2
- Views: 945
Re: Octet Rule Clarification
Any element n=3+ can have an expanded octet by utilizing d-orbitals found in the third principal energy level and in higher principle energy levels. Common examples include PCl5 (discussed in class), SF6, ClF3, I3-, etc.
- Wed Oct 25, 2017 9:21 am
- Forum: Properties of Electrons
- Topic: Rydberg Equation [ENDORSED]
- Replies: 6
- Views: 1027
Re: Rydberg Equation [ENDORSED]
If the electron is going from n=4 to n=2, then it would be going from an excited state to a lower energy state, which would make sense that the resulting Energy from the Rydberg equation would be negative, as energy would be emitted in this scenario. In the equation, n1 is the initial and n2 is alwa...
- Wed Oct 25, 2017 9:16 am
- Forum: *Shrodinger Equation
- Topic: Using Shrodinger's Equation
- Replies: 4
- Views: 934
Re: Using Shrodinger's Equation
I'm pretty sure my TA said we would only need to understand the conclusions and applications. I don't think we need to know the derivation.
- Wed Oct 18, 2017 7:13 am
- Forum: Einstein Equation
- Topic: What is the difference between deltaE=hv and E=hv?
- Replies: 5
- Views: 13776
Re: What is the difference between deltaE=hv and E=hv?
Delta E is the change in energy, E(final)-E(initial), while just E would be the calculation of energy at a given energy state, n.
- Wed Oct 18, 2017 7:11 am
- Forum: Properties of Electrons
- Topic: Constructive vs. Destructive Interference [ENDORSED]
- Replies: 4
- Views: 1204
Re: Constructive vs. Destructive Interference [ENDORSED]
Diffraction also results from two or more waves interacting constructively or destructively.
- Fri Oct 13, 2017 12:09 pm
- Forum: Properties of Electrons
- Topic: Energy Levels
- Replies: 6
- Views: 959
Re: Energy Levels
When an electron is hit by a photon of light, it absorbs the energy, which can cause it to become excited and move up energy levels.
- Mon Oct 09, 2017 4:05 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 415779
Re: Rusty on High School Chem [ENDORSED]
I am in the exact same boat. I haven't taken chemistry since sophomore year of high school and am now a first year in college. It's been helpful to just start doing problems in the book or online, and concepts start to come back to me. Working everything out is how I've been able to remember everyth...
- Mon Oct 09, 2017 4:03 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2954745
Re: Post All Chemistry Jokes Here
If silver surfer and iron man teamed up, they'd be alloys.
- Mon Oct 09, 2017 4:01 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2954745
Re: Post All Chemistry Jokes Here
What do you call a glass of water with a tooth in it?
1 molar solution.
1 molar solution.
- Tue Oct 03, 2017 10:06 am
- Forum: SI Units, Unit Conversions
- Topic: Dimensional Analysis/ Unit conversion [ENDORSED]
- Replies: 5
- Views: 1557
Re: Dimensional Analysis/ Unit conversion [ENDORSED]
If visualizing it and writing out all the steps helps you see it all better, definitely do it. The extra 15 seconds it takes would definitely be better than missing the points for the right answer. I also find that I tend to do that and it's saved me from many careless errors.
- Tue Oct 03, 2017 10:04 am
- Forum: SI Units, Unit Conversions
- Topic: Test 1 [ENDORSED]
- Replies: 3
- Views: 1005
Re: Test 1 [ENDORSED]
It should just be the section on review of chemical and physical principles, which is all we will have learned up until October 4. The syllabus said it will mainly cover problems from the homework.
- Tue Oct 03, 2017 10:02 am
- Forum: Empirical & Molecular Formulas
- Topic: Empirical/Molecular Formula Review Question
- Replies: 2
- Views: 961
Re: Empirical/Molecular Formula Review Question
You can calculate the grams of carbon using the given mass amount of CO2. You convert the mass of CO2 into moles using moles = mass/molar mass of CO2. Then, since CO2 and the compound are in a 1:1 ratio, you can use that same amount of moles to calculate the mass of Carbon using the equation moles=m...