Search found 78 matches
- Sun Mar 13, 2022 11:28 pm
- Forum: Student Social/Study Group
- Topic: Fave food
- Replies: 266
- Views: 46987
Re: Fave food
Fried chicken
- Sun Mar 13, 2022 11:24 pm
- Forum: Calculating Work of Expansion
- Topic: Work
- Replies: 8
- Views: 331
Re: Work
volume, whether or not the volume is changing, concentration, and the equations for all of these factors.
- Sun Mar 13, 2022 11:24 pm
- Forum: Calculating Work of Expansion
- Topic: Work
- Replies: 8
- Views: 331
Re: Work
volume, whether or not the volume is changing, concentration, and the equations for all of these factors.
- Sun Mar 13, 2022 11:22 pm
- Forum: General Rate Laws
- Topic: Rate Constant
- Replies: 50
- Views: 1497
Re: Rate Constant
They represent different rate constants. The prime note is there to signify which you are referring to.
- Sun Mar 13, 2022 11:14 pm
- Forum: Second Order Reactions
- Topic: half-life
- Replies: 46
- Views: 1458
Re: half-life
t(1/2) = 1/k[A]0
- Sun Mar 13, 2022 11:04 pm
- Forum: Phase Changes & Related Calculations
- Topic: Endothermic vs exothermic
- Replies: 30
- Views: 9437
Re: Endothermic vs exothermic
Frying an egg <— endothermic
Burning a stove <—- exothermic
Burning a stove <—- exothermic
- Sun Mar 06, 2022 11:59 pm
- Forum: General Rate Laws
- Topic: Equations
- Replies: 5
- Views: 233
Re: Equations
tristenleem3B wrote:Most of the base equations are on the sheet, and everything we need to use is able to be derived from the sheet.
Yeah you can basically rearrange some of these equations and make use of the new ones
- Sun Mar 06, 2022 11:58 pm
- Forum: Student Social/Study Group
- Topic: Favorite TV shows
- Replies: 277
- Views: 49469
Re: Favorite TV shows
Freaks and Geeks
- Sun Mar 06, 2022 11:57 pm
- Forum: Balancing Redox Reactions
- Topic: Oxidized v Reduced
- Replies: 79
- Views: 2993
Re: Oxidized v Reduced
Remember LEO (loss of electron = oxidation) apply this to whatever compound you are looking at.
- Sun Mar 06, 2022 11:55 pm
- Forum: First Order Reactions
- Topic: concentration of Reactants
- Replies: 4
- Views: 166
Re: concentration of Reactants
It should remain the same if I remember correctly.
- Sun Mar 06, 2022 11:52 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: What is K
- Replies: 59
- Views: 1666
Re: What is K
k is the rate constant.
- Sun Feb 27, 2022 11:59 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: What does "n" stand for
- Replies: 78
- Views: 3944
Re: What does "n" stand for
moles, as in number of moles
- Sun Feb 27, 2022 11:58 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Achieve #7
- Replies: 6
- Views: 244
Re: Achieve #7
Just remember that the chloride molecule have to be in the middle!
- Sun Feb 27, 2022 11:55 pm
- Forum: Balancing Redox Reactions
- Topic: anode vs cathode
- Replies: 77
- Views: 2492
Re: anode vs cathode
Left is anode, right is cathode.
- Sun Feb 27, 2022 11:54 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Achieve #7
- Replies: 4
- Views: 156
Re: Achieve #7
The aqueous chloride should be in the middle. Everything else is the same.
- Sun Feb 27, 2022 10:12 pm
- Forum: Balancing Redox Reactions
- Topic: Achieve Weeks 7 and 8 Q # 3
- Replies: 1
- Views: 101
Achieve Weeks 7 and 8 Q # 3
How would I go about balancing this equation? I understand finding the number of electrons for the iron half reaction, but I'm confused on balancing the NO2- to NO3- part. Anything helps. Thanks!
- Sun Feb 20, 2022 11:49 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Achieve Weeks 5/6, Question 8
- Replies: 4
- Views: 175
Re: Achieve Weeks 5/6, Question 8
Had the same question thanks for posting
- Sun Feb 20, 2022 11:44 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Using K
- Replies: 5
- Views: 227
Re: Using K
Kelvin is usually the standard for thermodynamics
- Sun Feb 20, 2022 11:44 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 10^7 and [H3O+][OH-]
- Replies: 10
- Views: 531
Re: 10^7 and [H3O+][OH-]
Milli Zunich 3I wrote:When would we use this? Just curious.
I also have this question! Let me know if you find the answer.
- Sun Feb 20, 2022 11:43 pm
- Forum: Phase Changes & Related Calculations
- Topic: "q" in thermodynamics
- Replies: 83
- Views: 4723
Re: "q" in thermodynamics
it represents heat!
- Sat Feb 19, 2022 2:04 pm
- Forum: Calculating Work of Expansion
- Topic: External Pressure in Work Expansion Problems
- Replies: 4
- Views: 217
External Pressure in Work Expansion Problems
How exactly does EXTERNAL pressure affect an isothermal system with expanding volume? I understand how pressure is related to acquire the work done, but what about external pressure? Is there a relationship between the two?
- Sun Feb 13, 2022 11:59 pm
- Forum: Phase Changes & Related Calculations
- Topic: delta H
- Replies: 98
- Views: 6278
Re: delta H
Loss and gain of heat!
- Sun Feb 13, 2022 11:59 pm
- Forum: Phase Changes & Related Calculations
- Topic: Exothermic Vs Endothermic
- Replies: 65
- Views: 2038
Re: Exothermic Vs Endothermic
Also, exo relates to exterior which means the outside absorbs energy!
- Sun Feb 13, 2022 11:57 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 10^7 and [H3O+][OH-]
- Replies: 10
- Views: 531
Re: 10^7 and [H3O+][OH-]
10 -7 comes from the autoprotolysis equation for water! When water undergoes such a process, it separates into H 3 O + and OH - . Since these ions are in equal concentrations, they both are equal to 10 -7 M, and when you multiply them together, you get K w , which is 10 -14 Hope this clears some co...
- Sun Feb 13, 2022 11:56 pm
- Forum: Ideal Gases
- Topic: Gas constant
- Replies: 11
- Views: 434
Re: Gas constant
Jeffrey Yang 3I wrote:I would say just look at the other units in the problem, and make sure to calculate both the numbers you use and the units to have the correct unit that the question asks for as your solution.
I agree. It's good to loom at the units before using any constants!
- Sun Feb 13, 2022 11:55 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat Capacities
- Replies: 15
- Views: 489
Re: Heat Capacities
Specific heat is how much energy is needed to raise the temperature by 1 degree, while the molar heat capacity is the energy required to heat a mole by 1 degree.
- Sun Feb 13, 2022 11:53 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Closed system
- Replies: 53
- Views: 1723
Re: Closed system
Think about a tea kettle. It can be heated up and cooled without transferring matter through it. Energy moves through the medium but matter cannot.
- Sun Feb 13, 2022 11:52 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K vs. Kc
- Replies: 42
- Views: 2184
Re: K vs. Kc
I think I saw that K usually refers to Kc, while Kp is usually just Kp. Not entirely sure but it makes sense, and that's what Organic Chemistry Tutor said.
- Sun Feb 06, 2022 11:59 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Can you change the energy of an isolated system whatsoever? [ENDORSED]
- Replies: 6
- Views: 402
Re: Can you change the energy of an isolated system whatsoever? [ENDORSED]
There is by definition no way to change the energy.
- Sun Feb 06, 2022 11:53 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Basic Chemical Equilibrium Question
- Replies: 8
- Views: 283
Re: Basic Chemical Equilibrium Question
Diya Kar wrote:At chemical equilibrium, the concentration or reactants to products does not necessarily have to be equivalent, however the rates at which the forward and reverse reactions are proceeding at must remain the same.
THANKS
- Sun Feb 06, 2022 11:52 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: celcius vs kelvin
- Replies: 36
- Views: 1004
Re: celcius vs kelvin
PV = nRT is an exclusively kelvin equation!
- Sun Feb 06, 2022 11:48 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Delta E and Delta U
- Replies: 15
- Views: 1482
Re: Delta E and Delta U
I've seen delta u used more but I'm sure they are interchangeable. The last website I looked at, as well as the homework, had them as the same thing.
- Sun Feb 06, 2022 11:47 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Additional Resources for Thermodynamics Calculations
- Replies: 2
- Views: 93
Re: Additional Resources for Thermodynamics Calculations
Organic chem tutor!!! He was a lot of help!
- Fri Feb 04, 2022 6:54 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Basic Chemical Equilibrium Question
- Replies: 8
- Views: 283
Re: Basic Chemical Equilibrium Question
Ok I just went back to the lecture and found out that BECAUSE the rates of the forward and reverse equations are EQUAL, the concentrations do not change. I was just confused on the more accepted definition. Thanks guys
- Fri Feb 04, 2022 6:49 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Basic Chemical Equilibrium Question
- Replies: 8
- Views: 283
Basic Chemical Equilibrium Question
Just doing some review and I came across slightly different definitions of chemical equilibrium. So, I must ask: is chemical equilibrium more so that the rates are equal in both directions or that the concentrations are the same?
- Sun Jan 30, 2022 10:41 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Work Integral
- Replies: 6
- Views: 248
Re: Work Integral
I doubt we'll have to use it on an actual test. Lavelle's thing is showing us concrete versions of what we're working with.
- Sun Jan 30, 2022 10:10 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Enthalpy
- Replies: 11
- Views: 399
Re: Enthalpy
Adele Nguyen 2G wrote:Enthalpy is the amount of heat released or absorbed at a constant pressure.
What does it mean for the pressure to not be constant?
- Sun Jan 30, 2022 10:02 pm
- Forum: Phase Changes & Related Calculations
- Topic: State property
- Replies: 4
- Views: 181
Re: State property
Paloma Sanchez 3L wrote:How do I calculate state property? What do I need to look at?
Yeah it really just depends what information is given to you. Just remember that enthalpy is always a state property!
- Sun Jan 30, 2022 9:54 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: State properties
- Replies: 23
- Views: 939
Re: State properties
I like to think of distance vs. displacement, where distance takes into account the changes that go on, while the displacement is simply a measure of beginning to end.
- Sun Jan 30, 2022 9:45 pm
- Forum: Phase Changes & Related Calculations
- Topic: Exothermic Vs. Endothermic
- Replies: 74
- Views: 3863
Re: Exothermic Vs. Endothermic
Also take into consideration what is happening to the surrounding objects. The heat doesn't just disappear. It is transferred to different system. So if its surroundings are getting warmer, it is exothermic.
- Sun Jan 23, 2022 11:45 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Knowing Acid Formulas
- Replies: 3
- Views: 156
Re: Knowing Acid Formulas
Thank you for the replies!!!
- Sun Jan 23, 2022 11:14 pm
- Forum: SI Units, Unit Conversions
- Topic: Achieve #5
- Replies: 4
- Views: 418
Re: Achieve #5
1. Find the pOH from the pH which is given to you. (14-9.710) 2. Use pOH value to find [OH-]. Use formula pOH = -log[OH]. You'll need to do inverse log, or basically 10 -pOH 3. Substitute your [OH-] value in the K b formula. 3.297×10−5 = [OH-] 2 /[B] 4. Once you solve for [B] subtract [OH] from you...
- Sun Jan 23, 2022 8:06 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Knowing Acid Formulas
- Replies: 3
- Views: 156
Knowing Acid Formulas
Are we supposed to know the general chemical equation for acids? I did NOT know what the setup actually looked like when I was doing the first 2 problems on this week's homework. So, are we expected to know the formula for monoprotic weak acids in exams? If so, got any tips for learning the basics?
- Fri Jan 21, 2022 4:08 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Excluding the molarity of H2O in K
- Replies: 7
- Views: 332
Excluding the molarity of H2O in K
So when we're calculating equilibrium constants, how do we know when to not include water? I know that under some circumstances, H2O will end up being in the numerator and denominator of the equation, but is with any equation that involves H2O, any equation with aqueous solutions on both sides, or w...
- Thu Jan 20, 2022 10:15 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Acids and Bases and water
- Replies: 10
- Views: 451
Re: Acids and Bases and water
Anthony Tam wrote:This is because strong acids dissociate completely in water. So the [H3O+] is essentially the same thing as the initial strong acid concentration.
Anthony u a real one
- Thu Jan 20, 2022 10:01 pm
- Forum: Student Social/Study Group
- Topic: ICE BOX Enjoyers
- Replies: 13
- Views: 955
ICE BOX Enjoyers
Anybody else a fan of the ICE box method? This is by no means an effort to get a point for the week, but I just wanted to see if others appreciate this strategy as much as I do. I couldn't imagine a chemistry class like this without it : )
- Thu Jan 20, 2022 9:57 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Acids and Bases and water
- Replies: 10
- Views: 451
Acids and Bases and water
Hi Hi Hi. On one of the lecture problems, a very strong acid or base is added to the water equation and from that, we somehow know or can easily estimate the resulting pH or equilibrium constant. Why is that? I understand that equilibrium constant for H3O and OH always adds up to 10^-14, but how can...
- Sun Jan 16, 2022 11:10 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE Box method
- Replies: 5
- Views: 235
Re: ICE Box method
I had trouble with this one too! I made sure to find the x, convert to concentrations using the volume given, and solve!
- Sun Jan 16, 2022 10:50 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium
- Replies: 7
- Views: 300
Re: Equilibrium
Remember to convert mols to concentrations before solving the equations! I always forget
- Sun Jan 16, 2022 10:33 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Doing calculation with mol instead of M
- Replies: 13
- Views: 384
Re: Doing calculation with mol instead of M
I had a similar question and apparently the difference is important. Based on what my peers are saying, it is very important to convert before going through with the calculation.
- Sun Jan 16, 2022 1:36 am
- Forum: General Science Questions
- Topic: mol/L^-1 vs. M
- Replies: 19
- Views: 4021
mol/L^-1 vs. M
Are mol/L^-1 and M synonymous in this class? I noticed that both M and mol/L were used in the HW, so I'm wondering if there is a big difference.
- Wed Jan 12, 2022 6:27 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 10^7 and [H3O+][OH-]
- Replies: 10
- Views: 531
10^7 and [H3O+][OH-]
Not sure if this is the right place to post this, but where is the 10^7 number derived from? I understand that it comes from one of the molecules in the water reaction, and that it has to do with 10^-14, which is the chemical equilibrium constant for the water reaction, but how did we get it?
- Mon Jan 10, 2022 11:21 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Exponents
- Replies: 4
- Views: 272
Exponents
It seems a little counter-intuitive to me that we write down two of something as an exponent rather than a coefficient on the equilibrium constant equation. Why is that?
- Sun Jan 09, 2022 11:36 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Chemical Equilibrium Constant [ENDORSED]
- Replies: 2
- Views: 124
Re: Chemical Equilibrium Constant [ENDORSED]
Equilibrium: No net change in concentration of reactant and product. forward rate = reverse rate *The rate of a reaction depends on the rate constant and the concentration. The forward and reverse rate constants are not equal, and the [R] and [P] are not equal at equilibrium. *I will discuss this i...
- Sun Jan 09, 2022 11:35 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kp vs Kc
- Replies: 22
- Views: 586
Re: Kp vs Kc
Just remember that you are working with different units when it comes to Kp over Kc! My mistake at the beginning was confusing the two. Although the equation is similar, kp is for partial pressure, meaning gases, and Kc is for concentrations, usually meaning liquids!
- Sun Jan 09, 2022 11:32 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Unit of K
- Replies: 6
- Views: 202
Re: Unit of K
I'm almost certain there are units within the components of the ratio, but otherwise, no. There are no units to the K constant.
- Sun Jan 09, 2022 11:29 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Catalysts
- Replies: 5
- Views: 195
Re: Catalysts
Yes, whenever I think of catalysts, I think of enzymes. Especially because they do not affect much else but the reaction activation energy. So the difference in rate of equilibrium between the two is the same.
- Sun Jan 09, 2022 9:03 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: calculating K
- Replies: 18
- Views: 590
Re: calculating K
how do I know where to put the terms for the products and reactants? since the equation is K=P/R (so product is the numerator), does that mean when we look at a chemical equation the products are going to be on the right side of the equation symbol? Usually questions tell you what you start with an...
- Thu Jan 06, 2022 1:19 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Chemical Equilibrium Constant [ENDORSED]
- Replies: 2
- Views: 124
Chemical Equilibrium Constant [ENDORSED]
If the net rate of change is equal for both the reaction and its reverse, why is the K constant not always 1? I'm a little confused on that part because I thought their concentration values would be around the same.
- Wed Oct 23, 2019 3:04 am
- Forum: DeBroglie Equation
- Topic: Conversions while working with de Broglie's
- Replies: 2
- Views: 173
Re: Conversions while working with de Broglie's
No worries!In this case, the SI unit is meters, so multiplying the top by 10^3 is probably the easiest option to get there. For arithmetic decisions like this, I just do whatever I feel more comfortable with, as there're many paths that you can take where you end up with the right option. Hey Mingd...
- Wed Oct 23, 2019 12:27 am
- Forum: DeBroglie Equation
- Topic: Conversions while working with de Broglie's
- Replies: 2
- Views: 173
Conversions while working with de Broglie's
Hello, I am currently working on a textbook word problem, 1b. 15, that requires the used of de Broglie's Equation. I ended up with Planck's constant (in meters) over the the momentum (in kilometers). Would it be more efficient to just multiply the top by 10^3 or should I convert one quantity to matc...
- Sun Oct 20, 2019 11:55 pm
- Forum: DeBroglie Equation
- Topic: Deriving the DeBrogile Equation
- Replies: 8
- Views: 405
Re: Deriving the DeBrogile Equation
While I think it's not totally necessary to memorize and know the derivation, it might prove to be helpful since the equations used to derive it are equations that we should know and memorize anyways! This way we can have a greater knowledge of how these concepts work together which could hopefully...
- Sun Oct 20, 2019 11:50 pm
- Forum: Photoelectric Effect
- Topic: Intensity v Frequency
- Replies: 5
- Views: 346
Re: Intensity v Frequency
Kimme Chun 1I wrote:The frequency is referring to how much energy a photon has and the intensity is referring to how many photons are present.
I don't think they have a direct relationship since both can vary.
- Sun Oct 20, 2019 11:44 pm
- Forum: DeBroglie Equation
- Topic: equation conversions
- Replies: 2
- Views: 184
Re: equation conversions
Petrina Kan 3C wrote:I have not seen this before. The DeBroglie equation cannot be used for light, so I'm not sure if it can be applied or combined with the equation for the energy of a photon?
It is a general rule that some equations cannot be used for light, and I think this may be one of the cases.
- Sun Oct 20, 2019 11:32 pm
- Forum: Einstein Equation
- Topic: When do we use the Einstein Equation?
- Replies: 14
- Views: 823
Re: When do we use the Einstein Equation?
How often would you have to rearrange this equation to find other quantities? Should this be practiced?
- Sun Oct 20, 2019 11:26 pm
- Forum: Properties of Electrons
- Topic: Electron Principles
- Replies: 3
- Views: 258
Re: Electron Principles
Gabriel Ordonez 1E wrote:Can someone please explain to a greater depth the following: Hund’s Rule, Pauli Exclusion Principle, and Aufbau Principle? Thank you in advance.
What exactly would you be looking for? The general meaning and use of these equations? I would love to help if you specified! :D
- Sat Oct 12, 2019 2:10 pm
- Forum: Properties of Electrons
- Topic: wave properties of electrons
- Replies: 4
- Views: 166
Re: wave properties of electrons
I think it would just be less likely. The bigger it is, the less wavelike, right?
- Sat Oct 12, 2019 2:02 pm
- Forum: Properties of Light
- Topic: Speed in a Vacuum
- Replies: 2
- Views: 154
Re: Speed in a Vacuum
Speed in a vacuum is defined as c= 3.00*10^8 m/s, which is a constant while measuring other speeds/variables in the electromagnetic spectrum topic. A formula given from the lecture is c=\lambda \times v , which is (the speed of light) = (wavelength) x (frequency). You can use the speed of light, a ...
- Sat Oct 12, 2019 1:49 pm
- Forum: Properties of Light
- Topic: Amplitude
- Replies: 12
- Views: 586
Re: Amplitude
Megan_1F wrote:What is the relationship between amplitude and intensity of light?
According to the school Physics website, "The intensity of a wave depends on its energy and the energy varies in a different way from the amplitude.". Hope this helped.
- Sat Oct 12, 2019 1:10 pm
- Forum: Properties of Light
- Topic: What exactly is diffraction?
- Replies: 3
- Views: 183
Re: What exactly is diffraction?
Hey Alice,
I had the same question! I just assumed it was some typeof divergence, but the definition seems to be exclusive to this topic.
I had the same question! I just assumed it was some typeof divergence, but the definition seems to be exclusive to this topic.
- Sat Oct 12, 2019 1:04 pm
- Forum: Balancing Chemical Reactions
- Topic: Conservation of electrons/protons
- Replies: 7
- Views: 736
Re: Conservation of electrons/protons
Ethan Lam 4A wrote:Does the charge conservation work for ions too?
I, too, had this question. Can anybody elaborate? I saw an example with an ion and I was confused.
- Sat Oct 12, 2019 1:01 pm
- Forum: Properties of Light
- Topic: Speed in a Vacuum
- Replies: 2
- Views: 154
Speed in a Vacuum
When is the speed in a vacuum used? Does anybody have any broad examples of when it is used?
- Sun Oct 06, 2019 9:20 pm
- Forum: Empirical & Molecular Formulas
- Topic: Empirical Ratio Rounding
- Replies: 6
- Views: 795
Re: Empirical Ratio Rounding
As I've said in a previous reply to another post, I would say that you should round if the decimal is .1 or .2. Anything larger would lead to inaccurate results because a false ratio. Thanks for posting this! :D
- Sun Oct 06, 2019 9:16 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Showing work in detail
- Replies: 7
- Views: 638
Re: Showing work in detail
I would recommend it as it is still correct; however, if you don't have much time, it is probably best that you imply them instead of explicitly adding them to your work.
- Sun Oct 06, 2019 9:13 pm
- Forum: Balancing Chemical Reactions
- Topic: Fractions
- Replies: 34
- Views: 1484
Re: Fractions
I'm guessing it's always best to make the fraction into an integer. I've heard that that is the way it's done in the scientific field and that it is preferred by many since it is more user friendly for future calculations.
- Sun Oct 06, 2019 9:09 pm
- Forum: Empirical & Molecular Formulas
- Topic: empirical and molecular formulas
- Replies: 7
- Views: 517
Re: empirical and molecular formulas
Remember to not be tricked! Sometimes many of my classmates forget to add the molar masses to compare it to the molar mass of the initial compound. It is always worth checking!!
- Sun Oct 06, 2019 9:05 pm
- Forum: Empirical & Molecular Formulas
- Topic: Rounding vs. Multiplying
- Replies: 4
- Views: 283
Re: Rounding vs. Multiplying
My TA told us that rounding when the decimal was .1 or .2 was acceptable, while bigger numbers such as .3 are better multiplied. :D
- Sun Oct 06, 2019 8:53 pm
- Forum: SI Units, Unit Conversions
- Topic: Unit Conversions
- Replies: 6
- Views: 382
Re: Unit Conversions
Hey DTingey_1C!
I'd recommend using flashcards associate these unit prefixes to the actual values of each one. :D. It helped me so much in high school.
I'd recommend using flashcards associate these unit prefixes to the actual values of each one. :D. It helped me so much in high school.