Search found 75 matches
- Sat Mar 16, 2019 10:07 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Platinum
- Replies: 5
- Views: 513
Re: Platinum
Can add Pt (s), or C (graphite)... Can also use Hg (l) if your ions / solids involve mercury.
- Sat Mar 16, 2019 10:06 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: cell potential
- Replies: 3
- Views: 650
Re: cell potential
To do E cath - E anode = E cell, always keep the reaction in reduction form... if you reverse anything, you have to add.
- Wed Mar 13, 2019 9:41 pm
- Forum: *Enzyme Kinetics
- Topic: Catalysts
- Replies: 18
- Views: 2535
Re: Catalysts
Important to note catalysts lower Ea, through altering and lowering the transition state of the reactants. They can affect orientation to idealize reactants' position for a reaction, or also weaken bonds of reactants to make them easier to break.
- Wed Mar 13, 2019 9:35 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Temperature
- Replies: 2
- Views: 481
Re: Temperatutre
I always convert to Kelvin to be safe... There are many instances, such as when you calculate for entropy when you divide two temperatures, and using Celcius here will mess up your ratio and give you an incorrect answer. You also know what to use based on the units and what you need to cancel out......
- Wed Mar 13, 2019 9:32 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Isothermal
- Replies: 5
- Views: 597
Re: Isothermal
I believe it is just a law. there can be no change in U if temperature does not change.
- Wed Mar 13, 2019 9:30 pm
- Forum: First Order Reactions
- Topic: Time Conversions
- Replies: 9
- Views: 1128
Re: Time Conversions
Use the appropritate time conversions: 1 hr is 60 mins, 60 secs in 1 min, 24 hr in day, etc.Set up diagonal conversions to cancel units out and end in whatever time unit you need.
- Wed Mar 13, 2019 9:23 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Elementary Step
- Replies: 1
- Views: 213
Re: Elementary Step
Elementary steps are any steps that transition from products to reactants, and don't require additional steps to transfer the reactants to products...
- Tue Mar 05, 2019 8:45 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Delta n
- Replies: 7
- Views: 1274
Re: Delta n
Yes, in many cases it's aqueous substances as well.
- Tue Mar 05, 2019 8:40 pm
- Forum: Zero Order Reactions
- Topic: Initial reactions rates
- Replies: 3
- Views: 473
Re: Initial reactions rates
Also, I thought of it as being an initial rate, which means products may be negliglble or very low, and allow us to focus our calculations on reacatants only.
- Tue Mar 05, 2019 8:37 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Activation Energy
- Replies: 2
- Views: 353
Re: Activation Energy
That's exactly how I think of it as well. Simply examine the equation and see what would happen. With the Arrhenius equation, it can be a little confusing to predict it right off the bat so plug in numbers to see what happens as well.
- Tue Mar 05, 2019 8:35 pm
- Forum: Balancing Redox Reactions
- Topic: k from lnK
- Replies: 5
- Views: 4000
Re: k from lnK
think about it as bases. When we cancel a log, we do it by taking the base of "log" which is 10, and raising it to the power of the value. Here, it is the same principle, except the base is now "e' instead of 10.
- Sat Mar 02, 2019 7:40 pm
- Forum: *Free Energy of Activation vs Activation Energy
- Topic: Spontaneous reactions
- Replies: 11
- Views: 4637
Re: Spontaneous reactions
Not always, you could have a negative entropy. This would give you negative - positive, and if the entropy is large enough it could become larger than the negative value and make delta G positive. Always refer back to the equation G = H - TS
- Sat Mar 02, 2019 7:39 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: w vs wmax
- Replies: 5
- Views: 624
Re: w vs wmax
It's the maximum nonexpansion work a system can do at reverseible conditions.
- Sat Mar 02, 2019 7:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Topics
- Replies: 6
- Views: 684
Re: Final Topics
Only necessary things I'd keep in mind from the previous quarter is drawing lewis structures and basics like limiting reacatant etc.
- Thu Feb 21, 2019 11:38 am
- Forum: Balancing Redox Reactions
- Topic: k from lnK
- Replies: 5
- Views: 4000
Re: k from lnK
You know how you have a -log(H+) to find pH, then to find H+ you raise 10 to the value of the pH? It's the similar thing... ln is just a log that has base e, so you take e and raise it to that power.
- Thu Feb 21, 2019 11:33 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Anode v. Cathode
- Replies: 9
- Views: 986
Re: Anode v. Cathode
The way I think of it, is that the anode repels the negatively charged electrons since it is negatively charged (loss of electrons). The cathode attracts and receives the electrons (gain of electrons).
- Mon Feb 18, 2019 4:47 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Polyprotic Acids
- Replies: 5
- Views: 531
Re: Polyprotic Acids
I write it out as Ka1, Ka2, Ka3... so on and so forth. Use the respective conjugate bases and acid each time you do the step.
- Mon Feb 18, 2019 4:45 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Pressure Change
- Replies: 4
- Views: 475
Re: Pressure Change
Exactly! Boyle's law shows that they are inversely related. V2/V1 is the same "ratio" as P1/P2.
- Mon Feb 18, 2019 4:44 pm
- Forum: Calculating Work of Expansion
- Topic: Units for R
- Replies: 10
- Views: 1395
Re: Units for R
You have to approach it depending on what you want to cancel out within the context of the problem. Choose the R value with units that will cancel out whatever form of units you have already been given.
- Mon Feb 18, 2019 4:42 pm
- Forum: General Science Questions
- Topic: Delta G equaling w
- Replies: 2
- Views: 554
Re: Delta G equaling w
I think theoretically we learn that it equals, but realistically, the maximum work that can be done may not equal delta G since it could be in the form of non usable work.
- Mon Feb 18, 2019 4:40 pm
- Forum: General Science Questions
- Topic: Conservation of Energy Question
- Replies: 1
- Views: 441
Re: Conservation of Energy Question
The spring would release as the rubber band melts away I believe and the spring would release all its potential energy there. Not sure tho.
- Mon Feb 18, 2019 4:38 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Delta G vs. Delta G (degree sign)
- Replies: 4
- Views: 2692
Re: Delta G vs. Delta G (degree sign)
Remember that standard conditions are 1 atm and 298 K, meaning it's constant.
- Thu Feb 07, 2019 12:56 pm
- Forum: Calculating Work of Expansion
- Topic: Ideal gas expansion
- Replies: 4
- Views: 426
Re: Ideal gas expansion
I think you're right... the work energy is thought of a value, rather than being gained or loss in this context.
- Thu Feb 07, 2019 12:54 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: constant volume
- Replies: 3
- Views: 376
Re: constant volume
Think of the graph we examined in lecture... Lack of volume change would contribute to no area under the curve, making the word done equal to zero.
- Thu Feb 07, 2019 12:48 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: delta u
- Replies: 2
- Views: 330
Re: delta u
I agree... There are other factors that affect delta U which can alter it such as q and w even if temperature is constant.
- Sat Feb 02, 2019 7:49 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: isolated system
- Replies: 5
- Views: 520
Re: isolated system
Maybe we would only make current calculations on the system's state, but as far as dynamics go, there are none so ya we couldn't really do much.
- Sat Feb 02, 2019 7:47 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: calorimeters
- Replies: 7
- Views: 635
Re: calorimeters
I agree... specifics that he wants us to take into further consideration would be included on a test... I would just remember that it's isolated if bomb calorimeter is used.
- Sat Feb 02, 2019 7:45 pm
- Forum: Phase Changes & Related Calculations
- Topic: Drawing a heating curve
- Replies: 6
- Views: 1120
Re: Drawing a heating curve
I'm not sure if it matters as long as you show the progression of the reaction correct?
- Thu Jan 24, 2019 1:36 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: pKa vs. pH
- Replies: 15
- Views: 3016
Re: pKa vs. pH
They're both logarithmic expression of completely different things. pKa is a logarithmic expression of Ka values while pH is a logarithmic expression of hydrogen ion concentration.
- Thu Jan 24, 2019 1:35 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: pH vs pKa
- Replies: 3
- Views: 375
Re: pH vs pKa
If given pH, just take the inverse log of the pH and this will give you H30+ concentration. Follow steps on ice tables and determine other concentartions and you have your Ka value. The main difference is that pKa is a logartithmic expression of Ka values and pH is a logarithmic expression of hydrog...
- Thu Jan 24, 2019 1:31 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Assuming K
- Replies: 2
- Views: 354
Re: Assuming K
Doesn't K value (by itself) normally imply that you should concentrations thought?
- Thu Jan 24, 2019 1:28 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: endothermic vs exothermic
- Replies: 6
- Views: 851
Re: endothermic vs exothermic
You need to know this for the test too. Adding heat changes the Q value for a reaction. If a reaction is endothermic that means heat is on the left side (reactants side) of the equation, while exothermic reactions have heat being released on the products side. You treat heat as a reactant or product...
- Thu Jan 17, 2019 7:51 pm
- Forum: Properties & Structures of Inorganic & Organic Bases
- Topic: Basic vs. Alkaline
- Replies: 2
- Views: 2158
Re: Basic vs. Alkaline
Alkaline I think has to do with elements from the second row (since they are called alkaline earth metals). They are basic, but not all bases have these alkaline earth metals.
- Thu Jan 17, 2019 7:48 pm
- Forum: Ideal Gases
- Topic: Partial Pressure for Gases [ENDORSED]
- Replies: 2
- Views: 462
Re: Partial Pressure for Gases [ENDORSED]
You could also increase the partial pressure of that gas by decreasing the moles of gas of the other gasses right?
- Thu Jan 17, 2019 7:46 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Strong acids and bases
- Replies: 2
- Views: 337
Re: Strong acids and bases
For strong acids I just memorize the list. For strong bases a good guideline is that first and second row elements elements (metals) hydroxides make strong bases. There are exceptions though so I would memorize most of the list above.
- Thu Jan 17, 2019 7:45 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Conjugate base
- Replies: 7
- Views: 729
Re: Conjugate base
Also usually carry a negative charge because they were just deprotonated.
- Fri Jan 11, 2019 9:36 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium Constant Values
- Replies: 3
- Views: 265
Re: Equilibrium Constant Values
Ya they're always given (as of now)!
- Fri Jan 11, 2019 9:35 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Effect of Pressure
- Replies: 3
- Views: 202
Re: Effect of Pressure
I would probably just follow the way Dr. Lavelle taught us in lecture.
- Fri Jan 11, 2019 9:34 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kc and Kp
- Replies: 12
- Views: 1778
Re: Kc and Kp
Gases as well as aqueous substances!
- Thu Dec 06, 2018 11:57 pm
- Forum: Lewis Structures
- Topic: Lewis Structure of CO
- Replies: 3
- Views: 338
Re: Lewis Structure of CO
Ya you can't have the greater formal charge distributed along the less electronegative atom.
- Thu Dec 06, 2018 11:47 pm
- Forum: Trends in The Periodic Table
- Topic: Expanded Valence Shells
- Replies: 3
- Views: 604
Re: Expanded Valence Shells
That's the same methodology I use when I get confused ^ ... I often forget which atoms are capable of forming more than an octet and can have expanded shells and simply think of the possible values based on quantum number. It always ends up making sense and working out.
- Thu Dec 06, 2018 11:45 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizing power
- Replies: 1
- Views: 355
Re: Polarizing power
small positively charged ions with high charge have the greatest polarizing power. No, ions increase in polarizing power as they get smaller, since the positively charged nucleus can interact with outer electrons of an anion more closely.
- Thu Dec 06, 2018 11:43 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: strong vs weak acids
- Replies: 2
- Views: 331
Re: strong vs weak acids
By neutralization, assume that the strong acid / base cancel each other out. While this may not happen in reality, we assume this for this course to simplify our calculations process.
- Fri Nov 30, 2018 1:43 am
- Forum: Lewis Structures
- Topic: Octet Rule
- Replies: 5
- Views: 525
Re: Octet Rule
The first four elements can form less than an octet because some of them don't even have p orbitals to fill 8 electrons with such as hydrogen. They also don't form octets because they have lower formal charges with less than an octet (more stable) or simply don't have enough electrons to form an oct...
- Fri Nov 30, 2018 1:39 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: One lone electron
- Replies: 3
- Views: 373
Re: One lone electron
I think for the purposes of this class, we were told to just treat radicals as having the same effect as lone pairs (which they do), just keeping in mind that they have the effect at a lower magnitude than a lone pair.
- Fri Nov 30, 2018 1:36 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Size Vs. Charge of Cations
- Replies: 2
- Views: 280
Re: Size Vs. Charge of Cations
I don't think that was discussed in lectures OR the book. I doubt they would test us on something that detailed that we don't know. I'd just know the trend that you already listed because they'll probably only test us on different cations having EITHER varying size or charge.
- Fri Nov 30, 2018 1:34 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Polydentate
- Replies: 3
- Views: 412
Re: Polydentate
It's just a ligand that has multiple electron binding sites... I feel like Dr. Lavelle only uses it for ligands that have a lot of binding sites (over two or three).
- Fri Nov 30, 2018 1:30 am
- Forum: Hybridization
- Topic: Lone Pairs in hybridization
- Replies: 3
- Views: 448
Re: Lone Pairs in hybridization
Because the electrons in lone pairs themselves come from orbitals too, you need to account for them while you generate your hybrid orbitals.
- Sat Nov 24, 2018 7:48 pm
- Forum: Octet Exceptions
- Topic: Incomplete Octet
- Replies: 2
- Views: 587
Re: Incomplete Octet
Also must keep in mind that even though it has an incomplete octet, it is still stable though. We can examine the stability of a compound by calculating formal charges. In BF3, the formal charge on each atom is zero, indicating that the Boron is stabler in that state than if it were to form addition...
- Sat Nov 24, 2018 7:46 pm
- Forum: Hybridization
- Topic: Hybrid Orbitals and Sigma/Pi Bonds
- Replies: 1
- Views: 235
Re: Hybrid Orbitals and Sigma/Pi Bonds
No. Hybrid orbitals also still form sigma and pi bonds. Same rules apply: first bond is a sigma bond, additional bonds are pi.
- Sat Nov 24, 2018 7:45 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Single vs Double bond electron diffusity
- Replies: 2
- Views: 192
Re: Single vs Double bond electron diffusity
In fact, VSEPR says that bonds of different orders don't get the classification as having greater electron repulsion, so thinking of it as making the molecule take up additional space as the order of the bond increases may not be correct.
- Tue Nov 20, 2018 1:24 pm
- Forum: Lewis Structures
- Topic: Electronegativity
- Replies: 4
- Views: 437
Re: Electronegativity
Also, you want to place more EN atoms around the less EN central atom, so that the more EN atoms pull the electrons towards them and sort of "even out" the dipole moments. This just makes the compound/molecule more stable.
- Tue Nov 20, 2018 1:23 pm
- Forum: Sigma & Pi Bonds
- Topic: sigma and pi bonds
- Replies: 5
- Views: 600
Re: sigma and pi bonds
Sigma bonds also always form first; formation of a pi bond always comes after a sigma bond exists.
- Tue Nov 20, 2018 1:22 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond angles
- Replies: 4
- Views: 384
Re: Bond angles
It also allows you to differentiate between electron-bond interactions and bond-bond interactions. Variances in bond angle allow us to further conclude whether there are just bonds that exist, or whether there are electron lone pairs.
- Fri Nov 16, 2018 8:14 pm
- Forum: Hybridization
- Topic: Sigma and Pi
- Replies: 5
- Views: 446
Re: Sigma and Pi
Pi bonds always form after the formation of a sigma bond, so that is why we always say sigma bonds form first.
- Fri Nov 16, 2018 8:11 pm
- Forum: Resonance Structures
- Topic: Bond Lengths
- Replies: 2
- Views: 214
Re: Bond Lengths
You always take the average and add it to the bond lengths, because double or single bonds in resonance structures are equally shared among the compound. So for a molecule with a triple bond and two single bonds, the average bond length would be 1 and 1/3.
- Fri Nov 16, 2018 8:08 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: analysis of non-polar molecules without vectors
- Replies: 2
- Views: 271
Re: analysis of non-polar molecules without vectors
All I remember him saying in today's lecture was that non polar means that the electrons are bonded and set up in a way that cancels out all dipole moments.
- Sat Nov 10, 2018 4:25 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR?
- Replies: 9
- Views: 976
Re: VSEPR?
Also, an important distinction to make is that lewis structures can determine shape but within the context of a 2-D model. VSEPR effectively works for 3-D context, which is the correct model.
- Sat Nov 10, 2018 4:20 pm
- Forum: Dipole Moments
- Topic: Dipole Moments
- Replies: 4
- Views: 375
Re: Dipole Moments
Dipole moments develop due to variances in electronegativity. The atom that is more electornegative has a negative value, and less electronegative is positive value. The direction can be shown by drawing an arrow from positive to negative atom, since the negative atom pulls electrons towards itself ...
- Sat Nov 10, 2018 4:15 pm
- Forum: Ionic & Covalent Bonds
- Topic: Iconic v Covalent Strength
- Replies: 4
- Views: 407
Re: Iconic v Covalent Strength
It's because electric attraction is stronger between oppositely charged ions, compared to the bond formed by just sharing electrons in covalent interactions.
- Sat Nov 03, 2018 11:37 pm
- Forum: Photoelectric Effect
- Topic: Kinetic energy
- Replies: 11
- Views: 3335
Re: Kinetic energy
I agree. In our context it is frequently used in electron kinetic energy calculations and for relating debroglie principles to the photo electric effect.
- Sat Nov 03, 2018 11:35 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Valence Electrons
- Replies: 2
- Views: 274
Re: Valence Electrons
I thought they have the same number of valence electrons as the group number they fall in?
- Sat Nov 03, 2018 11:34 pm
- Forum: Octet Exceptions
- Topic: Radicals
- Replies: 3
- Views: 333
Re: Radicals
Usually due to ions being created or charged molecular compounds that results in an oftentimes odd number of electrons can do that.
- Sat Oct 27, 2018 3:50 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Units
- Replies: 8
- Views: 721
Re: Units
also important to note that the Plancks constant and momentum units are a bit odd, but they always work themselves out by cancelling, especially when we solve for indeterminacy in position. may be worth practicing working through the units and looking at how they cancel out, because this becomes rea...
- Sat Oct 27, 2018 3:47 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Indeterminacy Question
- Replies: 3
- Views: 316
Re: Indeterminacy Question
exactly, it's in the format of minimum, or greater
- Sat Oct 27, 2018 3:46 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Heisenberg- In relation to wavelength
- Replies: 7
- Views: 741
Re: Heisenberg- In relation to wavelength
I thought it would be the opposite? Because dividing planks constant by a larger number would lead to a smaller wavelength value? Because don't they have an indirect relationship?
- Mon Oct 15, 2018 9:05 pm
- Forum: Properties of Light
- Topic: Mass of Light
- Replies: 5
- Views: 636
Re: Mass of Light
I thought it only has energy and momentum, and negligible mass? Can someone clarify?
- Mon Oct 15, 2018 5:24 pm
- Forum: Properties of Electrons
- Topic: Free vs. Bound Electrons
- Replies: 6
- Views: 5997
Re: Free vs. Bound Electrons
So are valence electrons and non valence electrons that are still bound to the nucleus both considered bound electrons?
- Mon Oct 15, 2018 5:21 pm
- Forum: Properties of Electrons
- Topic: Electrons in a stable state?
- Replies: 6
- Views: 609
Re: Electrons in a stable state?
that's a confusing way to look at it Anna. I'm not sure on the specifics of how electrons exactly "hold" their energy, but I'd just think of the electron itself containing the high state of energy as it buzzes around, and I think for our purposes at this level that should be sufficient. As...
- Mon Oct 15, 2018 5:13 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Energy of bound and free electrons
- Replies: 3
- Views: 398
Re: Energy of bound and free electrons
this is understandable as a detached electron was likely excited and is also free to interact with other atoms (thus giving it high PE). A bound electron also has high PE, but is still bound to the atom and is being held there by stable bonds (so less energy).
- Mon Oct 15, 2018 5:10 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Planck's constant
- Replies: 7
- Views: 1487
Re: Planck's constant
the meaning and significance of it, is that it relates wave frequency and levels of energy. (J/S)
- Mon Oct 15, 2018 5:06 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Absorption/Emission
- Replies: 4
- Views: 268
Re: Absorption/Emission
Agreed. the line that shows up is spectrum emission I think, because you can't translate absorption into a visible graph but can do this with emission. Absorption is related to what wavelengths are being taken in by a given atom. For colors and energy give off think emission.
- Fri Oct 05, 2018 3:00 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Molar Mass units
- Replies: 2
- Views: 232
Re: Molar Mass units
The -1 after the mol just means the mol goes in the denominator, but has been brought up and assigned a negative exponent.
- Fri Oct 05, 2018 2:57 am
- Forum: Significant Figures
- Topic: Sig Figs
- Replies: 3
- Views: 420
Re: Sig Figs
Ya he said he'd give us partial credit, and my TA said she would take some points off for errors in significant figures. My TA seemed somewhat lenient about it but still follow it correctly if you don't want to lose any points.
- Fri Oct 05, 2018 2:49 am
- Forum: SI Units, Unit Conversions
- Topic: SI Units
- Replies: 7
- Views: 572
Re: SI Units
I feel like for what we've done so far just always go with grams unless the question asks for kilograms. Chemistry involves measuring and calculating things in such small scale that using kilograms instead of grams seems unlikely. Of course, if the question specifies than go for kilogram but I think...