Nutrient that helps keep the body’s nerve and blood cells healthy
Helps make DNA and prevent megaloblastic anemia
I’m unsure if we need to know more than that but that is what I found through independent research.
Search found 43 matches
- Sat Dec 08, 2018 8:57 pm
- Forum: Biological Examples
- Topic: Vitamin B-12
- Replies: 2
- Views: 463
- Sat Dec 08, 2018 8:30 pm
- Forum: Amphoteric Compounds
- Topic: Amphoteric with H+
- Replies: 1
- Views: 496
Amphoteric with H+
Is amphoteric only associated with H2O?
And is amphiprotic only associated with the donor of a Hydrogen proton?
Or are they descriptive words for other atoms or compounds as well?
And is amphiprotic only associated with the donor of a Hydrogen proton?
Or are they descriptive words for other atoms or compounds as well?
- Sat Dec 08, 2018 8:27 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating pH or pOH with Molarity
- Replies: 3
- Views: 565
Calculating pH or pOH with Molarity
Are there questions where you have to find the molarity or will that always be a given?
- Sat Dec 08, 2018 8:26 pm
- Forum: Hybridization
- Topic: Hybridization of atoms other than the central atom
- Replies: 2
- Views: 561
Hybridization of atoms other than the central atom
Is the process the same for finding the hybridization of an outer atom as it is for the central atom?
- Sat Dec 08, 2018 8:21 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Shape - 4
- Replies: 3
- Views: 429
Shape - 4
For coordination number 4, the shape can be square planar or tetrahedral. Are we required to identify which one it is or just know that it could be either?
- Sat Dec 08, 2018 8:20 pm
- Forum: Dipole Moments
- Topic: Identifying Dipole-Dipole
- Replies: 2
- Views: 552
Identifying Dipole-Dipole
How do you identify dipole dipole?
- Sat Dec 08, 2018 8:19 pm
- Forum: Biological Examples
- Topic: Examples To Know
- Replies: 1
- Views: 368
Examples To Know
Are there any examples to know outside of the ones below?
Myoglobin
Guanine and Chlorine
Cisplatin
Hemoglobin
Myoglobin
Guanine and Chlorine
Cisplatin
Hemoglobin
- Sat Dec 08, 2018 8:07 pm
- Forum: Biological Examples
- Topic: Myoglobin [ENDORSED]
- Replies: 3
- Views: 718
Re: Myoglobin [ENDORSED]
Margaret Akey wrote:so the iron atom is tridentate?
No, because tridentate means 1 ligand bonding three times
But in this case, it is 3 different ligands.
- Sat Dec 08, 2018 7:41 pm
- Forum: Naming
- Topic: Dien - polydentate
- Replies: 1
- Views: 272
Dien - polydentate
Is dien bidenate? I know its coordination # is 4 but in my notes there is no “tetradenate” so what would you call it?
- Sat Dec 08, 2018 7:39 pm
- Forum: Naming
- Topic: naming compounds
- Replies: 6
- Views: 612
Re: naming compounds
The compound [Co(NH2CH2CH2NH2)2(CN)(Cl)]Cl (pardon the lack of subscripts) would be written as chlorocyanobisethylenediaminecobalt (III) chloride because the ethylenediamine already has a "di-" in it, or in other words it is already a polydentate molecule, so if there are two in the compl...
- Sat Dec 08, 2018 1:24 pm
- Forum: Naming
- Topic: naming compounds
- Replies: 6
- Views: 612
Re: naming compounds
Can someone explain this further or use an example?
I’m trying to understand when to use which prefix.
I’m trying to understand when to use which prefix.
- Sat Dec 08, 2018 1:22 pm
- Forum: Naming
- Topic: Ligand Suffix
- Replies: 2
- Views: 605
Re: Ligand Suffix
Is either one incorrect? If we choose the -o version, will we get it wrong?
- Wed Dec 05, 2018 5:09 pm
- Forum: Naming
- Topic: 9C3 7th Edition
- Replies: 1
- Views: 228
9C3 7th Edition
The question is asking the formula for some coordinate compounds.
For part c, tetraamminediaquacobalt(III)bromide, why in the formula ([Co(NH3)4(H2O)2]Br3), is there 3 Br?
For part c, tetraamminediaquacobalt(III)bromide, why in the formula ([Co(NH3)4(H2O)2]Br3), is there 3 Br?
- Wed Dec 05, 2018 4:58 pm
- Forum: Naming
- Topic: Naming Coordination Compounds
- Replies: 4
- Views: 479
Naming Coordination Compounds
Will we be given the document on lavelles website titled “naming coordination compounds” on the test or do we need to memorize it?
In the homework problems, it says to refer to the table for most of them.
In the homework problems, it says to refer to the table for most of them.
- Fri Nov 30, 2018 12:38 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Size Vs. Charge of Cations
- Replies: 2
- Views: 280
Size Vs. Charge of Cations
A smaller, highly charged cation has greater power.
Which of these factors has a greater factor in the polarizing power?
For example, if a cation is smaller than the one in comparison but it has a lower charge, does it still have a greater polarizing power?
Which of these factors has a greater factor in the polarizing power?
For example, if a cation is smaller than the one in comparison but it has a lower charge, does it still have a greater polarizing power?
- Mon Nov 26, 2018 9:44 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizability vs Polaring Power
- Replies: 2
- Views: 380
Polarizability vs Polaring Power
What is the difference between the two? Is it just that one is for anions and one is for cations?
- Sun Nov 25, 2018 11:49 pm
- Forum: Bond Lengths & Energies
- Topic: How to Measure Bond Lengths
- Replies: 4
- Views: 548
How to Measure Bond Lengths
Are they experimentally measured? If so, are we just required to know the trend of the length dependent on the atom and type?
- Sun Nov 25, 2018 11:40 pm
- Forum: Electronegativity
- Topic: Electronegativity Values
- Replies: 4
- Views: 744
Electronegativity Values
Is electronegativity measured experimentally or do we have to find it with a formula?
- Mon Nov 19, 2018 11:11 pm
- Forum: Hybridization
- Topic: Ethene (C2H4) hybridization
- Replies: 2
- Views: 690
Ethene (C2H4) hybridization
The last example we did in Nov 19th’s lecture was of Ethene.
I don’t understand why in the hybrid orbitals Lavelle put one electron in each of the three orbitals 2sp2 and then one in 2p. Is it because of the carbon interactions? And is the 2p hybridized?
I don’t understand why in the hybrid orbitals Lavelle put one electron in each of the three orbitals 2sp2 and then one in 2p. Is it because of the carbon interactions? And is the 2p hybridized?
- Mon Nov 19, 2018 11:09 pm
- Forum: Hybridization
- Topic: For the Test
- Replies: 3
- Views: 421
For the Test
Will we be required to draw the hybrid orbitals in electron configurations?
- Mon Nov 19, 2018 11:08 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape Importance
- Replies: 1
- Views: 173
Molecular Shape Importance
In the notes, Lavelle gave an example about how shape and bond angles affect the bond strength and stability of the molecule.
“Ex: spherical molecule would have a lower boiling point than rod shaped molecule with the same molecular formula”
Why is this true?
“Ex: spherical molecule would have a lower boiling point than rod shaped molecule with the same molecular formula”
Why is this true?
- Mon Nov 19, 2018 11:03 pm
- Forum: SI Units, Unit Conversions
- Topic: Significant 0’s [ENDORSED]
- Replies: 8
- Views: 1387
Significant 0’s [ENDORSED]
What are the rules for when a 0 is significant regarding the decimal point?
For example, how many significant figures are in the number 0.0850?
For example, how many significant figures are in the number 0.0850?
- Sun Nov 11, 2018 6:44 pm
- Forum: Resonance Structures
- Topic: Hybrid Resonance
- Replies: 4
- Views: 669
Hybrid Resonance
Hybrid resonance is just when all of the resonance structures have the same formal correct? And if one of the structures has a lower formal charge, it’s just more stable. Is there a specific name for the more stable structure?
- Sun Nov 11, 2018 6:42 pm
- Forum: Lewis Structures
- Topic: Double Bonds - Hallogens
- Replies: 1
- Views: 212
Double Bonds - Hallogens
Is it true that hallogens can not form double bonds? A TA said this in a review session but many others have said it is not true and I would like to confirm.
- Sun Nov 11, 2018 6:41 pm
- Forum: Ionic & Covalent Bonds
- Topic: Differentiating between Covalent and Ionic
- Replies: 3
- Views: 414
Differentiating between Covalent and Ionic
Ionic is between a metal and nonmetal and covalent is between a nonmetal and nonmetal.
Is there another way to identify between the two or are we expected to know other differences?
Is there another way to identify between the two or are we expected to know other differences?
- Mon Nov 05, 2018 12:04 am
- Forum: Lewis Structures
- Topic: C7 in 7th Edition HW
- Replies: 1
- Views: 204
C7 in 7th Edition HW
Why do the lone pairs (for expanded octet/extra e-) get added to Iodine instead of the Chlorine?
- Sun Nov 04, 2018 4:59 pm
- Forum: Lewis Structures
- Topic: B9 in 7th Edition
- Replies: 1
- Views: 101
B9 in 7th Edition
For B9, it asks you to draw the lewis structures for a few molecules. For part A, why is it that Cl didn’t need to be in brackets when displaying the charge in the final answer? For part b, why is there 3 K+ ions floating around the phosperus and how did they come to that lewis structure for P? And ...
- Sun Nov 04, 2018 1:56 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge and Radicals
- Replies: 2
- Views: 344
Formal Charge and Radicals
Is the formal charge the determining factor of where to form an expanded octet on an element? For example, if there are two elements in the Lewis structure that are n=3 or below, what formal charge would indicate where to place the expanded octet?
- Thu Nov 01, 2018 5:41 pm
- Forum: Trends in The Periodic Table
- Topic: Atomic Radius
- Replies: 3
- Views: 239
Re: Atomic Radius
I’m not asking how to change from pm to m. I’m asking how did they come up with that value for the atomic radius? Is there a formula or is there a way to figure it out from the periodic table?
- Thu Nov 01, 2018 5:18 pm
- Forum: Trends in The Periodic Table
- Topic: Atomic Radius
- Replies: 3
- Views: 239
Atomic Radius
For F.1 in the homework (7th edition), it gives the answer in the solutions manual with a value in pm. Will we be required to find that value for the midterm? If so, how do we do that?
- Thu Nov 01, 2018 5:17 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization Energy
- Replies: 3
- Views: 295
Ionization Energy
For homework question F.7 (7th edition), the book asks you to order the elements in decreasing ionization energy and explain why. I understand the explanation (the periodic trend is ionization energy decreases down a group and increases across a period). In the solutions manual, it is listing measur...
- Sun Oct 28, 2018 11:36 pm
- Forum: Lewis Structures
- Topic: Lewis Structures
- Replies: 13
- Views: 1041
Re: Lewis Structures
The atom with the lowest ionization energy level. Also H can never go in the middle.
- Sun Oct 28, 2018 11:34 pm
- Forum: Lewis Structures
- Topic: Identifying the Charge
- Replies: 2
- Views: 228
Identifying the Charge
Why do we have to identify the charge in the Lewis structure if we already added/subtracted the appropriate number of electrons based on the charge of the atom?
- Sun Oct 28, 2018 11:32 pm
- Forum: Lewis Structures
- Topic: Lines that Represent Bonds
- Replies: 7
- Views: 626
Lines that Represent Bonds
Are we allowed to draw bonded elements with two dots or do we have to use the line system? For example, To form SO4^2-, can we put two dots in between S and each of the O’s or do we need to put the line?
- Sun Oct 28, 2018 11:29 pm
- Forum: Ionic & Covalent Bonds
- Topic: Octet Rule
- Replies: 7
- Views: 682
Octet Rule
In the lecture, Dr. Lavelle says that the Octet Rule is more of a guideline; is this because there are exceptions?
- Sun Oct 28, 2018 11:27 pm
- Forum: Trends in The Periodic Table
- Topic: Periodic Trend - Ionization energy
- Replies: 2
- Views: 200
Periodic Trend - Ionization energy
The ionization energy decreases down a group and increases across a period
So does this mean that Flourine (F) would have a higher ionization energy than Chlorine (Cl)?
Does F have the highest energy out of all of the elements?
So does this mean that Flourine (F) would have a higher ionization energy than Chlorine (Cl)?
Does F have the highest energy out of all of the elements?
- Sun Oct 21, 2018 4:26 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Test Question
- Replies: 8
- Views: 750
Test Question
Are we required to know the shapes of the different orbitals?
- Sun Oct 21, 2018 4:24 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: What is the equation used for?
- Replies: 9
- Views: 875
What is the equation used for?
Does this equation measure atoms or electrons? OR does it measure light’s wavelengths?
- Sun Oct 21, 2018 4:21 pm
- Forum: Properties of Electrons
- Topic: Electrons - Wave Properties
- Replies: 4
- Views: 392
Electrons - Wave Properties
Do electrons have wavelengths? I realize they have wavelike properties but does this mean they don’t have measurable wavelengths?
- Sat Oct 06, 2018 2:11 pm
- Forum: Balancing Chemical Reactions
- Topic: Combustion Question on Modules
- Replies: 3
- Views: 257
Combustion Question on Modules
On the Pre-Module Assessment, #16 is asking for the combustion of butane gas but all it gives is C4H10. Is there a concept that we should already know about combustion? Meaning should I know what butane forms when it combusts without it given in the problem?
- Thu Oct 04, 2018 7:49 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Finding the Molar Mass of a metal
- Replies: 2
- Views: 157
Finding the Molar Mass of a metal
For question E15 in the 7th edition textbook, how do you use the molar mass of metal hydrodxide to find the molar mass of it’s sulfide?
In the solutions manual, it subtracts 34.02 g/mol from the molar mass of hydroxide but I’m not understanding the reasoning. Where did that number come from?
In the solutions manual, it subtracts 34.02 g/mol from the molar mass of hydroxide but I’m not understanding the reasoning. Where did that number come from?
- Thu Oct 04, 2018 6:56 pm
- Forum: Significant Figures
- Topic: Homework Regarding Avogadros Number
- Replies: 4
- Views: 330
Homework Regarding Avogadros Number
Should we be doing the homework with the full avogadros number (6.022) or is it okay to round to 6?
- Thu Oct 04, 2018 6:50 pm
- Forum: Significant Figures
- Topic: Regarding the Homework
- Replies: 2
- Views: 203
Regarding the Homework
On the homework problems to turn in, do we need to have completely accurate significant figures? For example, is it okay to round in the middle of a problem for the homework or will we be marked down?