CHEMISTRY COMMUNITY

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what is cisplatin?

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how many atoms in thymine could form a hydrogen bond?

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what should we know about acid rain?

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How is As2O3 an amphoteric oxide??

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what should we know about amphoteric oxides?

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you should know them all. better safe than sorry

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a bronsted acic is a supplier of one particular lewis acid, a proton. a bronsted base accepts the proton

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could someone just give me a quick briefing on the conjugate seesaw?

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Do we need to know what Arrhenius Acids & Bases are??

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Are we expected to carry out calculations for pOH with log ??

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some d orbitals get filled before the p orbitals. I recommend looking up an electron configuration chart for filling orbitals on google. It is really helpful.

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is octet expansion in hybridization period 3 & beyond on the periodic table?

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yes, you must consider lone pairs

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could someone explain to me the overlapping of orbitals in hybridization?

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single bonds are always signa, while double bonds & triple bonds start with one signa & then the rest are pi .

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I believe both, so definitely know how to do both. Just remember that only atom positions are used to name the shape.

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what does lone-pair>lone-bonding pair>bonding-bonding pair mean ??

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Why are angles "a little less than" certain angles?

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Why is the bond angle for OCLO less than 120?

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why is ClO2+ angular & trigonal planar? & what does angular mean?

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could someone explain the electron cloud distortion concept to me better ?

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what is the significance of dimers?

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i'm sure your TA will let you know what it will be on

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yes, it's helpful if you think about the number of electrons & their attraction to the nucleus as well to help you remember

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would we be given the electronegativity of elements when deciding which elements are more ionic or more covalent?

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when do you make the change in energy negative?

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It goes up to 2D

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When you need to manipulate equations to find the unknown, do you have to show every step you did to get to the final equation?

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What is the must know for the photoelectric effect?

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When are you not allowed to use the light equations when answering questions? TAs & UAs have made it clear not to use light equations for certain problems, but I never know why/when not to.

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does anyone know a shortcut for noble gas notation?

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anions gain an electron, so that can add an n, which makes the radius larger. Cations lose an electron, so that can take away an n, making the radius smaller

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you should! It helps a lot with noble gas orientation & electron configuration in general

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we only need to know those two for Chem 14A

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What should the order of electron configuration be? It should be 1s,2s,3s,3p,4s,3d I thought? Some people are saying 1s,2s,3s,3p,3d,4s to keep the n's together, though

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when would we need to draw the s,p,d, or f orbitals? & why do we need to know the planes?

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I'm really stressed out right now. The textbook is a lot of information with lots of formulas to know. Any advice for understanding the material better & to help me feel more prepared & confident?

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it's something you will just have to memorize

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Why do electrons with parallel spins avoid each other?

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what is the importance of the effective nuclear charge?

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is it important to know how to derive all of these different equations?

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speed of light is a constant!

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when do we use de broglies equation?

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why must energy of light be greater than some threshold energy?

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why do electrons need to have wavelike properties?

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why is e=hv only applied to light ?

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When should you leave the answer in scientific notation and when should you not?

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Hi, I took honors chem my sophomore year, but did not take AP Chem. Do you recommend I take Chem 17 instead of Chem 14A?

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I suggest that you go to the Step Up workshops in Covel!

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the textbook can scare me, but it's best to break it down. Don't read too much in one sitting and take notes on things that scare you. If you really don't understand a concept, try looking at videos on Youtube!

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i believe only if the problem asks for meters

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You just need to make sure the answer you give to the problem has the correct amount of sig figs. So just follow the sig fig rules. Your answer should have the same amount of sig figs as the number in the question with the least amount of sig figs.

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