Q: What is the dullest element?
A: Bohrium
Search found 69 matches
- Sat Mar 09, 2019 1:49 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
- Sat Mar 09, 2019 1:48 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
Q: What do chemists call a benzene ring with iron atoms replacing the carbon atoms?
A: A ferrous wheel!
A: A ferrous wheel!
- Sat Mar 09, 2019 1:46 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: integrated rate law
- Replies: 2
- Views: 330
Re: integrated rate law
The rate laws only use the reactants because they are based on the initial rate of the reaction which is when no product has been created, or if it has it is so little that it is negligible. Therefore, you only need to account for the reactants in the equation.
- Sun Mar 03, 2019 3:09 pm
- Forum: Student Social/Study Group
- Topic: Chemistry News
- Replies: 135
- Views: 162179
Re: Chemistry News
https://cen.acs.org/physical-chemistry/ ... eb/2018/06
Geochemistry! Cool article about chemistry in nature!
Geochemistry! Cool article about chemistry in nature!
- Sun Mar 03, 2019 3:06 pm
- Forum: Student Social/Study Group
- Topic: Chemistry News
- Replies: 135
- Views: 162179
Re: Chemistry News
https://www.sciencedaily.com/releases/2 ... 093626.htm
I thought this article was an interesting mix of chemistry and biology! Wanted to share!
I thought this article was an interesting mix of chemistry and biology! Wanted to share!
- Sun Mar 03, 2019 3:00 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Setting up redox equation for Nernst
- Replies: 2
- Views: 341
Re: Setting up redox equation for Nernst
Can you use the standard cell potentials to determine which way would be spontaneous and then use that to find which is the cathode and which is the anode?
- Sun Mar 03, 2019 2:58 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Corrosion and Ion Selective Electrodes
- Replies: 4
- Views: 476
Corrosion and Ion Selective Electrodes
The book describes corrosion and ion selective electrodes/glass electrodes In a lot of detail that wasn’t talked about in class. Should we try to understand this in the same detail as in the book or is what we learned in class okay?
- Sun Mar 03, 2019 2:55 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: standard cell potential negative and positive
- Replies: 2
- Views: 249
Re: standard cell potential negative and positive
A positive cell potential means that reaction is spontaneous, while a negative one means it is non spontaneous.
- Tue Feb 26, 2019 11:43 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: HW Q
- Replies: 1
- Views: 207
Re: HW Q
That seems like a typo. The H+ shouldn't just disappear.
- Tue Feb 26, 2019 11:42 am
- Forum: Balancing Redox Reactions
- Topic: 7th Edit 6L9
- Replies: 1
- Views: 207
Re: 7th Edit 6L9
In the table in the appendix, you can look at the E of each. You then use those numbers to determine which one is the cathode and which is the electrode in order for E cell to be positive. This then tells you which one is reduced (whichever one is the cathode) and which one is oxidized (whichever on...
- Tue Feb 26, 2019 11:39 am
- Forum: Balancing Redox Reactions
- Topic: Solution to balancing this redox reaction
- Replies: 1
- Views: 212
Re: Solution to balancing this redox reaction
It looks right to me!
- Tue Feb 26, 2019 11:38 am
- Forum: Balancing Redox Reactions
- Topic: 6L.3
- Replies: 1
- Views: 234
Re: 6L.3
Carbon isn't included because it is being used as an electrode but does not effect the redox reaction.
- Sun Feb 17, 2019 9:49 pm
- Forum: Student Social/Study Group
- Topic: Chemistry News
- Replies: 135
- Views: 162179
Re: Chemistry News
I thought this was interesting and shows the interdisciplinary nature of STEM fields!
https://engineering.nyu.edu/news/nyu-re ... duce-waste
https://engineering.nyu.edu/news/nyu-re ... duce-waste
- Sun Feb 17, 2019 9:38 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
What did the cashier say to Gibbs when he bought an energy drink?
"Don't worry about it. It's free.”
"Don't worry about it. It's free.”
- Sun Feb 17, 2019 9:31 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs Free Energy
- Replies: 7
- Views: 858
Re: Gibbs Free Energy
Gibbs free energy is the maximum potential amount of reversible work that can be performed on a thermodynamic system. So a change in this means more or less work can be done on the system which affects the systems change in enthalpy, temperature, and/or change in entropy.
- Sun Feb 17, 2019 9:26 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Spontaneous Reaction
- Replies: 1
- Views: 247
Re: Spontaneous Reaction
The equation ∆G=∆H-T∆S shows that even if ∆H and ∆S are negative, T can change the value of the second term and affect spontaneity. More specifically, if ∆S is negative, then the second term would be positive, and if T were great enough, it would make ∆G positive, which would make it non spontaneous...
- Sun Feb 17, 2019 9:20 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Determining Spontaneity
- Replies: 1
- Views: 214
Re: Determining Spontaneity
We can not determine spontaneity based on delta H because the total free energy (delta G) is also affected by t∆S, so at certain temperatures, the free energy would still be positive and it would not be spontaneous. Basically there is another term which must be accounted for in order to determine sp...
- Sun Feb 17, 2019 9:18 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs Free energy and spontaneity
- Replies: 2
- Views: 208
Re: Gibbs Free energy and spontaneity
A negative delta G means that free energy is being released from the system. This means it is spontaneous (rather than requiring energy to be added to the system which would be non spontaneous). Also, since energy is being released, it increases the entropy in the universe by putting more energy int...
- Sun Feb 17, 2019 9:16 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Two Gibbs Free Energy Formulas
- Replies: 2
- Views: 284
Re: Two Gibbs Free Energy Formulas
Yes, I think you use the equation which allows you to plug in the given information. In other words, you decide which equation to use based on the information given in the problem.
- Sun Feb 03, 2019 5:04 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Reversible reaction
- Replies: 1
- Views: 202
Re: Reversible reaction
I think that they occur when there is an outside stimuli that causes it. I don't think they are just naturally occurring. But I'm not totally sure.
- Sun Feb 03, 2019 5:02 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess's Law vs. Rxn Enthalpies
- Replies: 2
- Views: 464
Re: Hess's Law vs. Rxn Enthalpies
I think they are both ways to find a change in total enthalpy of the system, so it depends on the given information to see which one is easiest to use.
- Sun Feb 03, 2019 5:00 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Week 5 Homework
- Replies: 4
- Views: 344
Re: Week 5 Homework
I think you can choose!
- Tue Jan 22, 2019 1:06 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
16 sodiums walk into a room. Who's next?
Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na... BATMAN
Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na... BATMAN
- Tue Jan 22, 2019 1:04 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
If Avogadro calls, tell him to leave his number.
- Tue Jan 22, 2019 1:02 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Endothermic vs. Exothermic
- Replies: 8
- Views: 766
Re: Endothermic vs. Exothermic
An endothermic reaction requires energy, while an exothermic reaction releases energy.
- Mon Jan 21, 2019 11:48 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Using Equilibrium Constants to Predict Solubility
- Replies: 2
- Views: 278
Using Equilibrium Constants to Predict Solubility
How do you use the equilibrium constants to predict solubility? Do you just see which way the reaction favors, and if it is the side with (aq) you know it is going to be soluble but if it favors the other direction then it won’t?
- Mon Jan 21, 2019 11:30 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Example 5J.3 Help!
- Replies: 2
- Views: 244
Example 5J.3 Help!
In the textbook, there is a question asking to predict the effect of compression on the equilibrium composition of the reaction CO2 (g) + H2O (l) —> H2CO3 (aq).
Since H2O is a liquid, that means there is one gaseous/ aqueous molecule on each side, so would compression not affect the equilibrium?
Since H2O is a liquid, that means there is one gaseous/ aqueous molecule on each side, so would compression not affect the equilibrium?
- Fri Jan 18, 2019 9:57 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
What kind of dogs do chemists have?
Laboratory retrievers.
Laboratory retrievers.
- Fri Jan 18, 2019 9:56 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
What do you call a wheel made of iron?
A ferrous wheel.
A ferrous wheel.
- Fri Jan 18, 2019 9:53 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Ka vs. Kb
- Replies: 12
- Views: 4520
Ka vs. Kb
Can someone help explain when you use Ka, Kb, or Kc? Are Ka and Kb used whenever H30+ or OH- is a product?
- Fri Jan 11, 2019 12:05 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
I tried to write a joke about the periodic table... but I wasn’t quite in my element.
- Fri Jan 11, 2019 11:49 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Pure Substances
- Replies: 2
- Views: 263
Re: Pure Substances
I think it is more significant that gases effect activity (which is a concept that is a little more complicated so Dr. Lavelle said we don’t need to really focus on it) and activity is how equilibrium constants are found so therefore gases explain equilibrium constants.
- Fri Jan 11, 2019 11:46 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE Tables
- Replies: 1
- Views: 171
Re: ICE Tables
Yes that is right. You add x proportional to the coefficients in the equation.
- Thu Dec 06, 2018 3:10 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Kw
- Replies: 2
- Views: 286
Kw
So Kw is equal to [H+][OH-]. Is pKw always equal to 14? And if so, why?
- Wed Dec 05, 2018 2:22 pm
- Forum: Identifying Acidic & Basic Salts
- Topic: Rules for acidic & basic salts
- Replies: 1
- Views: 169
Re: Rules for acidic & basic salts
Salts that are acids lower the pH of the solution, while salts that are bases raise the pH of the solution. For the most part, for salts that are acids the cation is the ion that reacts with water, while for salts that are bases it is the anion that reacts with water.
- Wed Dec 05, 2018 2:19 pm
- Forum: Amphoteric Compounds
- Topic: amphoteric oxides
- Replies: 3
- Views: 346
Re: amphoteric oxides
They are BeO, Al2O3, Ga2O3, SnO2, Sb2O5, and PbO6.
- Wed Dec 05, 2018 2:11 pm
- Forum: Naming
- Topic: Polyatomic ions and naming
- Replies: 7
- Views: 483
Re: Polyatomic ions and naming
I think we should probably be familiar with the main ones which are in a chart on page 724 of the 7th edition book!
- Fri Nov 30, 2018 11:56 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Oxidation number
- Replies: 9
- Views: 802
Re: Oxidation number
Also for the s and p block, as you move left to right across the period, the oxidation number goes +1, +2, +3, + or -4, -3, -2, -1.
- Tue Nov 27, 2018 5:00 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sigma and Pi bonds
- Replies: 4
- Views: 460
Re: Sigma and Pi bonds
So single bonds are sigma bonds. They are an overlap of two orbitals in one place. They can rotate. Pi bonds occur for double and triple bonds. Double bonds have 1 sigma and 1 pi bond, while triple bonds have 1 sigma and 2 pi bonds. Pi bonds basically are an overlap of two orbitals in two places. Th...
- Tue Nov 27, 2018 4:57 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Question 3.119
- Replies: 2
- Views: 295
Re: Question 3.119
Yes exactly. The true bond length is a mix of the single and double bond because of resonance.
- Tue Nov 27, 2018 4:56 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Chapter 4 Sixth Edition Number 11
- Replies: 1
- Views: 193
Re: Chapter 4 Sixth Edition Number 11
The formal charge on the other two Iodine atoms is 0, so you need to have 3 lone pairs for the formal charge to be -1 on the central atom in order to give the molecule the -1 charge.
- Tue Nov 27, 2018 6:25 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Double Bonds as Regions of Electron Density
- Replies: 5
- Views: 418
Double Bonds as Regions of Electron Density
Do Double bonds count as 1 single region of electron density or two?
- Tue Nov 27, 2018 6:23 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Seesaw or Square Planar
- Replies: 3
- Views: 2171
Re: Seesaw or Square Planar
Square Planar is when you have 4 bonds but 6 regions of electron density.
Seesaw is when you have 4 bonds but 5 regions of electron density.
Does that help?
Seesaw is when you have 4 bonds but 5 regions of electron density.
Does that help?
- Tue Nov 27, 2018 6:18 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Bond Order
- Replies: 2
- Views: 270
Re: Bond Order
But bond order just refers to how many bonds there are between two atoms, so it isn't hard! Just requires counting.
- Tue Nov 27, 2018 6:13 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Drawing a Dipole
- Replies: 6
- Views: 611
Drawing a Dipole
When we draw a dipole, do we use the modern convention or the other one? In other words, should the arrow point towards the negative charge or the positive one?
- Thu Nov 15, 2018 9:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
When I tell chemistry jokes, I normally get a good reaction.
- Thu Nov 15, 2018 9:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
Do you want to hear a post about Nitric Oxide?
NO
NO
- Thu Nov 15, 2018 9:04 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Trigonal Planar
- Replies: 5
- Views: 444
Re: Trigonal Planar
They don't have to be double bonds, there just have to be three regions of electron density.
- Thu Nov 15, 2018 9:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Single Regions?
- Replies: 8
- Views: 746
Re: Single Regions?
Well a single bond has 2 electrons, so I would assume it means that. A double bond has 4 electrons, so that would be its electron density. But i'm not totally sure.
- Thu Nov 15, 2018 9:02 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Vsepr Formula
- Replies: 7
- Views: 401
Re: Vsepr Formula
Basically VESPR is the 3D representation of the lewis structure. However, we won't be asked to draw them, we just have to be able to name the shape and draw the lewis structure.
- Thu Nov 08, 2018 10:49 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
I know my friends don't like chemistry jokes... but I tell them periodically.
- Thu Nov 08, 2018 10:46 pm
- Forum: Dipole Moments
- Topic: Dipole - Dipole vs. Hydrogen Bonding
- Replies: 7
- Views: 1611
Dipole - Dipole vs. Hydrogen Bonding
In High School, I thought we learned the hydrogen bonding was the weakest form of bonding, but my notes show that Dipole-Dipole bonds are actually weaker. Why is that?
- Thu Nov 08, 2018 10:42 pm
- Forum: Dipole Moments
- Topic: dipole interaction
- Replies: 2
- Views: 209
Re: dipole interaction
Polarizability is how easy it is to pull electrons from one atom in a molecule towards the other. When this happens, a dipole moment occurs, because the electrons are pulled towards one of the atoms, making it more positively charged. Dispersion forces have fluctuating electron distributions, where ...
- Thu Nov 01, 2018 4:43 pm
- Forum: Student Social/Study Group
- Topic: Chemistry News
- Replies: 135
- Views: 162179
New Chemistry Helping make Plastic Safer!
A professor at UCSC was able to make a plastic that doesn't leach chemicals into its surroundings (like PVC does)! This can have massive environmental effects if companies will start using her new nonmigratory plasticizers.
https://www.eurekalert.org/pub_releases ... 103118.php
https://www.eurekalert.org/pub_releases ... 103118.php
- Thu Nov 01, 2018 4:40 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
OMG! Did you hear that Magnesium and Oxygen are a couple?!
- Thu Nov 01, 2018 4:38 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2760347
Re: Post All Chemistry Jokes Here
OMG! Did you hear that Oxygen and Magnesium are a couple?!
- Thu Nov 01, 2018 4:24 pm
- Forum: Octet Exceptions
- Topic: Boron Trifluoride class example
- Replies: 3
- Views: 327
Re: Boron Trifluoride class example
Fluorine is really unstable when it has a positive charge, so much so that I don't really think it ever happens. So it is a bad thing because it just isn't realistic or really possible.
- Fri Oct 26, 2018 11:38 am
- Forum: Student Social/Study Group
- Topic: Chemistry News
- Replies: 135
- Views: 162179
Re: Chemistry News
Nobel Prize in Chemistry Goes to a Woman for the Fifth Time in History I know this is from earlier this month, but I think it is super cool and wanted to share! https://www.nytimes.com/2018/10/03/science/frances-arnold-nobel-prize-chemistry.html?rref=collection%2Ftimestopic%2FChemistry&action=cl...
- Fri Oct 26, 2018 11:34 am
- Forum: Ionic & Covalent Bonds
- Topic: Focus 2D #3 - HW Problem
- Replies: 4
- Views: 858
Re: Focus 2D #3 - HW Problem
That is confusing to me too, because I thought if it has a high polarizing energy, it will be more likely to give an electron away/ take an electron, making an ionic bond more likely.
- Fri Oct 26, 2018 11:27 am
- Forum: Ionic & Covalent Bonds
- Topic: Ionization Energy vs. Electronegativity
- Replies: 5
- Views: 510
Ionization Energy vs. Electronegativity
I'm a little confused. What is ionization energy and how is it different from electronegativity?
- Fri Oct 19, 2018 3:01 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Homework 1E.25
- Replies: 2
- Views: 154
Re: Homework 1E.25
So basically for A), we know that there is 1 valence electron that will be in an s orbital, so they wrote ns^1 to mean at any energy level, the orbital will be the s shape, and there will be one electron in the orbital. For B), we know that the valence shell of any of the atoms (at any energy level)...
- Fri Oct 19, 2018 2:50 pm
- Forum: *Shrodinger Equation
- Topic: Schrodingers Equation and Probability Density
- Replies: 2
- Views: 342
Re: Schrodingers Equation and Probability Density
To add on to that, it basically helps calculate the orbital that a specific electron is in by telling us where the electron will probably be.
- Fri Oct 19, 2018 2:47 pm
- Forum: *Shrodinger Equation
- Topic: Shrodinger Equation Question
- Replies: 3
- Views: 355
Re: Shrodinger Equation Question
We don't need to know how to do equations with the wave function, but it is important to know that the wave function squared is gives you the probability of finding an electron in a certain area (that energy shell).
- Thu Oct 11, 2018 7:50 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Balmer and Lyman series
- Replies: 3
- Views: 164
Re: Balmer and Lyman series
I think it is basically the same equation, but it is just trying to determine the change in frequency when it is excited, rather than the frequency at a certain instant.
- Thu Oct 11, 2018 7:46 pm
- Forum: Einstein Equation
- Topic: Spectroscopy experimenting
- Replies: 4
- Views: 307
Re: Spectroscopy experimenting
This is confusing to me too... Do you mean that if there is energy absorbed from the light by the metal that is exactly the same as the work function, the electrons are excited but remain with the metal rather than being ejected?
- Thu Oct 11, 2018 2:45 pm
- Forum: Properties of Electrons
- Topic: Explaining Millikan's Experiment
- Replies: 2
- Views: 305
Explaining Millikan's Experiment
Hi there,
In the textbook, Robert Millikan's experiment to determine the charge of an electron using oil droplets was explained, but I don't really understand it. How could the "smallest increment of charge between droplets" be the charge of one electron? What does that mean?
In the textbook, Robert Millikan's experiment to determine the charge of an electron using oil droplets was explained, but I don't really understand it. How could the "smallest increment of charge between droplets" be the charge of one electron? What does that mean?
- Fri Oct 05, 2018 11:33 pm
- Forum: Limiting Reactant Calculations
- Topic: Calculating Maximum Mass
- Replies: 5
- Views: 1288
Re: Calculating Maximum Mass
I'm struggling as well, but I think you have to use stoichiometry to solve for grams of Cu(OH)2 starting with 2.00 g NaOH and then again with the .80 mL of Cu(NO3)2 to determine which is the limiting reactant. However, I'm having some trouble making the equation at the moment.
- Fri Oct 05, 2018 3:52 pm
- Forum: Empirical & Molecular Formulas
- Topic: Compound Names
- Replies: 9
- Views: 780
Re: Compound Names
In some of the homework problems they asked for the formulas of compounds given their names (E7 in particular asks "epsom salts consist of magnesium sulfate heptahydrate. Write its formula.) I'm not sure how to do that. Can anyone help?
- Fri Oct 05, 2018 11:40 am
- Forum: Molarity, Solutions, Dilutions
- Topic: Water Added to Solution Placed in a New Flask
- Replies: 3
- Views: 584
Re: Water Added to Solution Placed in a New Flask
You can use the equation Vinitial*M initial = Vfinal*M final to solve for M final
You find M initial by converting the 5.00 g KMnO4 to moles per liter using the known 150 mL volume and stoichiometry.
Then you put that concentration and volume into the equation and solve for M final.
You find M initial by converting the 5.00 g KMnO4 to moles per liter using the known 150 mL volume and stoichiometry.
Then you put that concentration and volume into the equation and solve for M final.