Search found 41 matches

by RBergtraun_3A
Sat Dec 07, 2019 3:56 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: polydentate
Replies: 3
Views: 38

Re: polydentate

it all depends on the structure of each molecule. like some have multiple potential bonding sites, but the sites aren’t far enough apart that 2 could bind, and some have 2 bonding sites that are far enough apart that it could bind to 2 molecules at the same time. A molecule that can bind both at th...
by RBergtraun_3A
Sat Dec 07, 2019 3:55 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: polydentate
Replies: 3
Views: 38

Re: polydentate

it all depends on the structure of each molecule. like some have multiple potential bonding sites, but the sites aren’t far enough apart that 2 could bind, and some have 2 bonding sites that are far enough apart that it could bind to 2 molecules at the same time. I kind of figured it out, you're de...
by RBergtraun_3A
Sat Dec 07, 2019 2:51 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: polydentate
Replies: 3
Views: 38

polydentate

how do u differentiate between a ligand that has two binding site but can only bind one at a time and one that can bond two at the same time?
by RBergtraun_3A
Sat Dec 07, 2019 2:49 pm
Forum: Empirical & Molecular Formulas
Topic: charge
Replies: 4
Views: 49

Re: charge

The charge is 2- because you calculate the formal charge on each atom. For the single bonded oxygens, the formal charge is -1 because you take the valence electrons and subtract the lone pairs and half the bonding pairs, 6-(6 + .5(2)). The double bonded oxygens have a formal charge of 0, 6-(4 + .5(...
by RBergtraun_3A
Sat Dec 07, 2019 12:56 pm
Forum: Empirical & Molecular Formulas
Topic: charge
Replies: 4
Views: 49

Re: charge

Bryce Barbee wrote:It is because there are 2 double bonds on the Sulfur and the two single bonded oxygens have a negative 1 charge.

This took me a sec but makes sense thanks
by RBergtraun_3A
Fri Dec 06, 2019 6:56 pm
Forum: Bronsted Acids & Bases
Topic: strong v weak acids
Replies: 8
Views: 45

Re: strong v weak acids

I think you really just need to know the 6 strong bases and know those are the ones that completely dissociate. The rest wouldn't completely dissociate, and it is likely that you would be given values for calculations to determine how strong or weak an acid is. Hopefully that made sense! Would thos...
by RBergtraun_3A
Fri Dec 06, 2019 6:52 pm
Forum: SI Units, Unit Conversions
Topic: Remembering temperature conversions
Replies: 2
Views: 36

Re: Remembering temperature conversions

Also remember that 0 celcius is freezing point for water and 0 Kelvin doesnt really exist since it means when electrons stop moving.
by RBergtraun_3A
Fri Dec 06, 2019 6:51 pm
Forum: SI Units, Unit Conversions
Topic: Remembering temperature conversions
Replies: 2
Views: 36

Re: Remembering temperature conversions

You dont need to know Fahrenheit, but Kelvin is always 273 degrees more that Celcius.
by RBergtraun_3A
Fri Dec 06, 2019 6:49 pm
Forum: Empirical & Molecular Formulas
Topic: charge
Replies: 4
Views: 49

charge

Why is the charge on Sulfate 2-?
by RBergtraun_3A
Wed Dec 04, 2019 1:23 pm
Forum: Naming
Topic: Memorization
Replies: 6
Views: 40

Re: Memorization

Jasmine Fendi 1A wrote:I think we need to memorize it and also we should memorize the ligands list that Lavelle sent out in an email.

Do you know what compounds we need to memorize?
by RBergtraun_3A
Wed Dec 04, 2019 1:22 pm
Forum: Naming
Topic: Memorization
Replies: 6
Views: 40

Re: Memorization

Jasmine Fendi 1A wrote:I think we need to memorize it and also we should memorize the ligands list that Lavelle sent out in an email.

Thank you, very helpful
by RBergtraun_3A
Wed Dec 04, 2019 1:21 pm
Forum: Naming
Topic: Memorization
Replies: 6
Views: 40

Re: Memorization

Nawal Dandachi 3G wrote:yeah i believe so

For sure thanks
by RBergtraun_3A
Tue Dec 03, 2019 10:59 pm
Forum: Naming
Topic: Memorization
Replies: 6
Views: 40

Memorization

Should we know the charge of certain compounds for the test or will that be given?
by RBergtraun_3A
Mon Dec 02, 2019 10:57 pm
Forum: Bronsted Acids & Bases
Topic: strong v weak acids
Replies: 8
Views: 45

Re: strong v weak acids

I think you really just need to know the 6 strong bases and know those are the ones that completely dissociate. The rest wouldn't completely dissociate, and it is likely that you would be given values for calculations to determine how strong or weak an acid is. Hopefully that made sense! Would thos...
by RBergtraun_3A
Mon Dec 02, 2019 10:51 pm
Forum: Bronsted Acids & Bases
Topic: strong v weak acids
Replies: 8
Views: 45

strong v weak acids

Do we need to know if an acid is weak or strong by heart for the test?
by RBergtraun_3A
Mon Dec 02, 2019 10:21 pm
Forum: Bronsted Acids & Bases
Topic: general q
Replies: 2
Views: 28

general q

do only ions have a pH?
by RBergtraun_3A
Sun Dec 01, 2019 12:39 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2.57
Replies: 4
Views: 27

Re: 2.57

I got linear here. I checked and its in the solutions book.
by RBergtraun_3A
Sun Dec 01, 2019 12:36 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular shape of carbon Dioxide
Replies: 10
Views: 39

Re: Molecular shape of carbon Dioxide

linear since theres lone pairs on opposing sides.
by RBergtraun_3A
Sun Dec 01, 2019 12:35 pm
Forum: Balancing Chemical Reactions
Topic: Balancing This Equation
Replies: 11
Views: 104

Re: Balancing This Equation

You always add O2 when its a combustion reaction. Fire needs oxygen.
by RBergtraun_3A
Sun Dec 01, 2019 12:34 pm
Forum: Trends in The Periodic Table
Topic: electron affinity
Replies: 7
Views: 52

Re: electron affinity

Chanel D_4E wrote:Electron affinity increases as you goes up a period and across a period (from left to right).

Thats such a helpful image thank u so much
by RBergtraun_3A
Sun Dec 01, 2019 12:32 pm
Forum: Trends in The Periodic Table
Topic: Periodic Table trends
Replies: 11
Views: 118

Re: Periodic Table trends

s-, p-, d-, and f-orbitals all basically coordinate based on the number of nodal planes, the number of electrons that they can hold, and their shape. If you search up a periodic table with the blocks in place, you can see how the electrons fill out the orbitals based on its levels, and so forth. Fo...
by RBergtraun_3A
Sun Dec 01, 2019 12:31 pm
Forum: Trends in The Periodic Table
Topic: Periodic Table trends
Replies: 11
Views: 118

Re: Periodic Table trends

The biggest difference is their shape and their ability to hold e-. The s-orbital can only hold 2 e-. The p-orbital can only only 6 e-. The d-orbital can only hold 10 e-. The f-block can hold 14 e-. In the ground state of an atom, the electrons must fill up all spots in lower energy levels before m...
by RBergtraun_3A
Sun Dec 01, 2019 12:30 pm
Forum: Student Social/Study Group
Topic: readings
Replies: 13
Views: 128

Re: readings

Do you guys read the whole book? what are some tips for studying?
by RBergtraun_3A
Sun Dec 01, 2019 12:27 pm
Forum: Significant Figures
Topic: Sig Figs on Tests
Replies: 24
Views: 272

Re: Sig Figs on Tests

Generally your answer uses the least amount of precision given. So if one number has three sig figs and the other has 4 the answer would use 3.
by RBergtraun_3A
Mon Nov 18, 2019 2:28 pm
Forum: Electronegativity
Topic: test
Replies: 4
Views: 39

Re: test

I don't believe that they'd expect us to have the electronegativity values memorized, but definitely understanding the trend and how it's affected by the atomic number and the distance at which its valence electrons reside from the charged nucleus. Thanks! If you don't mind what are the trends more...
by RBergtraun_3A
Mon Nov 18, 2019 1:36 pm
Forum: Electronegativity
Topic: test
Replies: 4
Views: 39

test

Do we need to know the electronegativity by heart for the test?
by RBergtraun_3A
Sun Nov 17, 2019 10:38 pm
Forum: Balancing Chemical Reactions
Topic: Fractions
Replies: 20
Views: 187

Re: Fractions

its useful to use fractions in the process of figuring it out then multiplying the whole equation (both sides) by a least common denominator.
by RBergtraun_3A
Sun Nov 17, 2019 10:36 pm
Forum: Trends in The Periodic Table
Topic: electron affinity
Replies: 7
Views: 52

electron affinity

Are there trends for electron affinity on the periodic table?
by RBergtraun_3A
Sun Nov 17, 2019 10:28 pm
Forum: SI Units, Unit Conversions
Topic: Kg
Replies: 4
Views: 56

Re: Kg

you can easily convert between. 10^3.
by RBergtraun_3A
Sun Nov 17, 2019 10:27 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 116
Views: 11205

Re: All students read this sig fig post [ENDORSED]

Evamae Bayudan 1B wrote:Will we be penalized for putting extra significant figures?


Without a doubt. I would not add any extra.
by RBergtraun_3A
Sun Nov 17, 2019 10:25 pm
Forum: SI Units, Unit Conversions
Topic: Memorizing Conversions
Replies: 23
Views: 222

Re: Memorizing Conversions

Some of them will be given on the sheet, but I would memorize the most common ones!
by RBergtraun_3A
Sun Oct 27, 2019 4:25 pm
Forum: Ionic & Covalent Bonds
Topic: Valence Electrons
Replies: 16
Views: 110

Re: Valence Electrons

valence electrons are found in the outer most orbital. The number is equal to the atom's main group number. Hopefully that simplifies things.
by RBergtraun_3A
Sun Oct 27, 2019 4:12 pm
Forum: Ionic & Covalent Bonds
Topic: ionization
Replies: 5
Views: 33

Re: ionization

Essentially, ionization is the energy required to remove an electron from an ion. For the most part, the trend on the periodic table is that ionization energy increases left to right and decreases top to bottom.
by RBergtraun_3A
Sun Oct 27, 2019 4:01 pm
Forum: Trends in The Periodic Table
Topic: Periodic Table trends
Replies: 11
Views: 118

Re: Periodic Table trends

Mashkinadze_1D wrote:These all correlate to the quantum number of l. This is simply how they are shown on the periodic table. The connection between the two is seen!


Not quite sure I understand l yet but thats a good piece of advice thank you.
by RBergtraun_3A
Sun Oct 27, 2019 3:59 pm
Forum: Trends in The Periodic Table
Topic: Periodic Table trends
Replies: 11
Views: 118

Re: Periodic Table trends

The s-, p-, d-, and f- orbitals designate the shapes of the mathematical functions predicting the locations of electrons in atoms. The s- orbital has a spherical shape with no nodal planes and symmetric distribution, the p-orbital has two lobes on either side of the nucleus, d- orbital has three 4-...
by RBergtraun_3A
Sat Oct 26, 2019 1:55 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Wavelength Plausibility
Replies: 30
Views: 843

Re: Wavelength Plausibility

I had a similar question, this video helped me a lot. Hope it helps you. https://www.khanacademy.org/science/phy ... c-spectrum
by RBergtraun_3A
Tue Oct 22, 2019 12:02 am
Forum: Trends in The Periodic Table
Topic: Periodic Table trends
Replies: 11
Views: 118

Periodic Table trends

Hey guys, I'm not quite grasping the point of the differentiation between the s-block p-block and d-block. Thanks!
by RBergtraun_3A
Sat Oct 19, 2019 4:16 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 169
Views: 102923

Re: Rusty on High School Chem [ENDORSED]

Khan academy works really well for quick brush up on knowledge. I'm in the same boat.
by RBergtraun_3A
Thu Oct 10, 2019 2:49 pm
Forum: Student Social/Study Group
Topic: readings
Replies: 13
Views: 128

readings

Is it just me or is hard to figure out what readings we're supposed to be doing?
by RBergtraun_3A
Sat Oct 05, 2019 4:39 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Mole help [ENDORSED]
Replies: 8
Views: 93

Mole help [ENDORSED]

Hi guys! Can anyone explain moles to me in a simple way? I get what they are technically, but it's still not completely clear in my mind. Thanks
by RBergtraun_3A
Thu Oct 03, 2019 10:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 130
Views: 3350

Re: Advice from a Medical Student - Part II [ENDORSED]

Very inspiring! Thank you for taking the time.

Go to advanced search