Search found 48 matches
- Sun Jun 10, 2018 11:15 pm
- Forum: Significant Figures
- Topic: Sig Figs in Heisenberg Uncertainty Principle
- Replies: 3
- Views: 635
Re: Sig Figs in Heisenberg Uncertainty Principle
How would you make this distinction in all problems?
- Sun Jun 10, 2018 11:15 pm
- Forum: Significant Figures
- Topic: Calculations
- Replies: 3
- Views: 574
Calculations
I am under the impression sig figs for the tests do not take a toll on the grade, what if the correct number of sig figs being used alters our calculations which alters the answer to the problem?
- Sun Jun 10, 2018 11:12 pm
- Forum: Empirical & Molecular Formulas
- Topic: Practice Problem
- Replies: 2
- Views: 501
Re: Practice Problem
What exactly is your question affiliates with this problem?? Do you need help with it all?
- Sun Jun 10, 2018 11:10 pm
- Forum: Empirical & Molecular Formulas
- Topic: E3
- Replies: 2
- Views: 642
Re: E3
So the picture is confusing, but the atoms on the left are gallium and the ones on the right aren’t technically on the pan, which is why it is asking you how many there would need to be in order to equal the mass of the ones on the left .
- Sun Jun 10, 2018 11:04 pm
- Forum: Empirical & Molecular Formulas
- Topic: Test 1 Question 7
- Replies: 3
- Views: 582
Re: Test 1 Question 7
Just use conversions as you would grams to moles, except for the whole compound. Once youve reached that step in your conversion, then you isolate carbon in the CO2 conversion and Hydrogen in H2O.
- Sun Jun 10, 2018 10:59 pm
- Forum: Limiting Reactant Calculations
- Topic: Limiting reagent of NH(3) +CuO------->N(2)+H2O+CO
- Replies: 3
- Views: 1041
Re: Limiting reagent of NH(3) +CuO------->N(2)+H2O+CO
Once you make your conversions, the smaller result is the limiting reagent and the larger one is excess. Subtract excess reagent by the overall excess reagent given
- Sun Jun 10, 2018 10:55 pm
- Forum: Limiting Reactant Calculations
- Topic: Question M8
- Replies: 3
- Views: 676
Re: Question M8
Do you need help with each question?
- Sun Jun 03, 2018 11:26 pm
- Forum: Lewis Structures
- Topic: Corbon Monoxide
- Replies: 5
- Views: 863
Re: Corbon Monoxide
Normally, always fufill the octet rule.
- Sun Jun 03, 2018 11:24 pm
- Forum: Sigma & Pi Bonds
- Topic: Bond Strength/Bond Type
- Replies: 3
- Views: 771
Re: Bond Strength/Bond Type
https://cbc-wb01x.chemistry.ohio-state. ... dorder.htm
maybe this will help?
maybe this will help?
- Sun Jun 03, 2018 11:22 pm
- Forum: Bond Lengths & Energies
- Topic: Test 3 Q 8 [ENDORSED]
- Replies: 9
- Views: 1308
Re: Test 3 Q 8 [ENDORSED]
does that apply to all bonds?
- Sun Jun 03, 2018 11:18 pm
- Forum: Electronegativity
- Topic: HW question 3.77
- Replies: 4
- Views: 860
Re: HW question 3.77
Fluorine has the highest electronegativity.
- Sun Jun 03, 2018 11:11 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Strength of an acid
- Replies: 14
- Views: 1597
Re: Strength of an acid
Im also interested in that question: is it standard that acids with longer bonds are stronger?
- Sun Jun 03, 2018 11:10 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Strength of an acid
- Replies: 14
- Views: 1597
Re: Strength of an acid
I think it relies on which bond is the most electronegative.
- Sun May 20, 2018 10:23 pm
- Forum: Ionic & Covalent Bonds
- Topic: Polarization
- Replies: 7
- Views: 1077
Re: Polarization
I'm not that sure either, but I hope this helps!
https://www.askiitians.com/iit-jee-chem ... character/
https://www.askiitians.com/iit-jee-chem ... character/
- Sun May 20, 2018 10:21 pm
- Forum: Ionic & Covalent Bonds
- Topic: Test 3 [ENDORSED]
- Replies: 7
- Views: 1013
Re: Test 3 [ENDORSED]
Is that for sure? If so, then would it be given?
- Sun May 20, 2018 10:20 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma Bonds
- Replies: 5
- Views: 645
Re: Sigma Bonds
However, what does it mean "for the extent of the overlap to be maximum?" I'm confused too.
- Sun May 20, 2018 10:17 pm
- Forum: Dipole Moments
- Topic: Meaning of a dipole
- Replies: 7
- Views: 784
Re: Meaning of a dipole
I think it is just the charge of that specific atom.
- Sun May 20, 2018 10:12 pm
- Forum: Lewis Structures
- Topic: 3.39
- Replies: 5
- Views: 695
Re: 3.39
Maybe you should look at how to determine the charge by the suffix of the words. Also, it helps to look at the periodic table.
- Sun May 20, 2018 10:10 pm
- Forum: Lewis Structures
- Topic: Radicals
- Replies: 1
- Views: 261
Re: Radicals
You determine it by looking at the most electronegative atom.
- Sun May 13, 2018 10:47 pm
- Forum: Lewis Structures
- Topic: KCl Lewis formula
- Replies: 6
- Views: 1926
Re: KCl Lewis formula
This is a bit confusing. How would you exactly know, every time you conduct a lewis structure diagram, which element gives/receives, or when they share?
- Sun May 13, 2018 10:44 pm
- Forum: Lewis Structures
- Topic: Max Number of bonds
- Replies: 2
- Views: 280
Re: Max Number of bonds
I'm not exactly sure how to answer your question. I do not think you can have 4 bonds with a single element. If one combines with another, then it is just left at that.
Could you perhaps rephrase it?
Could you perhaps rephrase it?
- Sun May 13, 2018 10:40 pm
- Forum: Ionic & Covalent Bonds
- Topic: 3.29
- Replies: 6
- Views: 757
Re: 3.29
What is the most frequent scenario in which this is used?
- Sun May 13, 2018 10:38 pm
- Forum: Ionic & Covalent Bonds
- Topic: Lewis Structure vs Resonance Structure
- Replies: 6
- Views: 674
Re: Lewis Structure vs Resonance Structure
Are we required to use both? Or are we allowed to choose?
- Sun May 13, 2018 10:37 pm
- Forum: Ionic & Covalent Bonds
- Topic: cation vs anion
- Replies: 14
- Views: 3607
Re: cation vs anion
Maybe you can just remember that anions kind of sounds like "anti-ions" which obviously means negative.
- Sun May 13, 2018 10:33 pm
- Forum: Ionic & Covalent Bonds
- Topic: VALENCE ELECTRONS [ENDORSED]
- Replies: 16
- Views: 2035
Re: VALENCE ELECTRONS [ENDORSED]
Yes, you have to use the number of valence electrons in order to conduct your Lewis dot diagrams.
- Sun Apr 29, 2018 11:12 pm
- Forum: *Black Body Radiation
- Topic: Black Body [ENDORSED]
- Replies: 4
- Views: 1051
Re: Black Body [ENDORSED]
What is the chance of finding an object that can absorb light at any wavelength of frequency?
- Sun Apr 29, 2018 11:10 pm
- Forum: Properties of Light
- Topic: light as a particle
- Replies: 3
- Views: 650
Re: light as a particle
You're welcome!
- Sun Apr 29, 2018 11:08 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: The concept of Orbitals
- Replies: 12
- Views: 1055
Re: The concept of Orbitals
what would the situation be to find the probability low rather than high?
- Sun Apr 29, 2018 11:06 pm
- Forum: Properties of Electrons
- Topic: electron mass
- Replies: 15
- Views: 1603
Re: electron mass
If it is relevant, it will be provided for your calculations.
- Sun Apr 29, 2018 11:05 pm
- Forum: Einstein Equation
- Topic: converting from keV to joules
- Replies: 7
- Views: 836
Re: converting from keV to joules
I also get confused.
- Sun Apr 29, 2018 11:01 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Study Guide for Midterm? [ENDORSED]
- Replies: 3
- Views: 505
Re: Study Guide for Midterm? [ENDORSED]
What about study guides?
- Sun Apr 29, 2018 11:01 pm
- Forum: Administrative Questions and Class Announcements
- Topic: ATTACHING IMAGES TO POSTS? [ENDORSED]
- Replies: 3
- Views: 615
Re: ATTACHING IMAGES TO POSTS? [ENDORSED]
I believe you can also copy and paste.
- Sun Apr 22, 2018 10:17 pm
- Forum: Properties of Light
- Topic: Wavelengths
- Replies: 8
- Views: 654
Re: Wavelengths
Dr. Lavelle also mentioned that you should primarily know the order of increasing wavelengths.
- Sun Apr 22, 2018 10:13 pm
- Forum: Properties of Light
- Topic: Memorizing formulas test 2
- Replies: 16
- Views: 1663
Re: Memorizing formulas test 2
More specifically, I mean in terms of knowing which formulas to use for specific problems. What about that?
- Sun Apr 22, 2018 10:12 pm
- Forum: Properties of Light
- Topic: light as a particle
- Replies: 3
- Views: 650
Re: light as a particle
"Around 1700, Newton concluded that light was a group of particles (corpuscular theory). Around the same time, there were other scholars who thought that light might instead be a wave (wave theory). Light travels in a straight line, and therefore it was only natural for Newton to think of it as...
- Sun Apr 22, 2018 10:08 pm
- Forum: Properties of Light
- Topic: Memorizing formulas test 2
- Replies: 16
- Views: 1663
Memorizing formulas test 2
Does anyone know any easy/fun ways of memorizing the formulas that will be mentioned in test #2?
- Sun Apr 22, 2018 10:07 pm
- Forum: Properties of Light
- Topic: test 2
- Replies: 18
- Views: 1584
Re: test 2
To my understanding, the test will not cover week 4.
- Sun Apr 22, 2018 10:05 pm
- Forum: Properties of Light
- Topic: Wavelength/frequency
- Replies: 11
- Views: 1258
Re: Wavelength/frequency
I guess it's the conservation of energy, if the speed changed then this would require an acceleration which would need energy to be put in or taken out of the wave.
- Sun Apr 15, 2018 10:51 pm
- Forum: SI Units, Unit Conversions
- Topic: What is the notation for molar mass?
- Replies: 15
- Views: 4691
Re: What is the notation for molar mass?
g/mol is mass, mole/liter is Molarity. They both are represented as 'M,' however when im doing my practice or hw problems i just write mass as 'mm.'
- Sun Apr 15, 2018 10:49 pm
- Forum: SI Units, Unit Conversions
- Topic: Sig Figs
- Replies: 9
- Views: 1053
Re: Sig Figs
You should typically have/use an updated and accurate periodic table.
- Sun Apr 15, 2018 10:48 pm
- Forum: SI Units, Unit Conversions
- Topic: writing out conversions in one long line vs. steps
- Replies: 16
- Views: 1394
Re: writing out conversions in one long line vs. steps
In high school, my chem teacher demonstrated the conversions in more of a chart form, it is easier to keep track of because it appears to be more organized and neat.
- Sun Apr 15, 2018 10:46 pm
- Forum: SI Units, Unit Conversions
- Topic: Volume V Density [ENDORSED]
- Replies: 5
- Views: 880
Re: Volume V Density [ENDORSED]
As said, volume measures space in an object while density measures amount of matter in that object.
- Sun Apr 15, 2018 10:42 pm
- Forum: SI Units, Unit Conversions
- Topic: Quiz 1
- Replies: 6
- Views: 679
Re: Quiz 1
I was also confused. I think that there should have been some sort of elaboration on it, or at least a clear demonstration of it.
- Sun Apr 15, 2018 10:39 pm
- Forum: SI Units, Unit Conversions
- Topic: Do we have to convert final answer to make it simpler? [ENDORSED]
- Replies: 4
- Views: 497
Re: Do we have to convert final answer to make it simpler? [ENDORSED]
You should typically put it in meters, however, it is up to the professor on what he may allow.
- Sun Apr 15, 2018 10:32 pm
- Forum: Student Social/Study Group
- Topic: Study Group
- Replies: 8
- Views: 992
Re: Study Group
This would be very helpful.
- Sun Apr 08, 2018 9:16 pm
- Forum: Significant Figures
- Topic: Amount of significant figures in calculations.
- Replies: 2
- Views: 270
Re: Amount of significant figures in calculations.
Typically, the easiest way to recognize how many significant figures to use is first to know that any non-zero digits and any zero digits in between are significant digits. Leading zero-digits are not significant. Usually in the question, they may already use the amount of sig. figs. in the number, ...
- Sun Apr 08, 2018 9:07 pm
- Forum: Empirical & Molecular Formulas
- Topic: Order of Elements in Empirical Formula [ENDORSED]
- Replies: 4
- Views: 12461
Re: Order of Elements in Empirical Formula [ENDORSED]
We put the elements in order due to the fact that for empirical and molecular formulas in chemistry, the Hill System is in place. This states that carbon comes first, then hydrogen, and finally the rest of the elements in alphabetical order. Exceptions to this rule are order of elements in ionic com...
- Sun Apr 08, 2018 8:57 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing the Equation
- Replies: 9
- Views: 1172
Re: Balancing the Equation
Typically, try starting with the smallest group of elements. Also, you can start with one containing oxygen, and if there isn't oxygen, try carbon.