CHEMISTRY COMMUNITY

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Conjugate acids and bases should be seen as what is left over after an acid and base reaction, not what that they donate or receive protons.

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The salt may be an acid that will react with water and produce more hydronium atoms to make a more acidic solution

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We just need to know the general wavelengths that are associated with types of waves.

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Speed of light is constant

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More focus may be towards the last part of this chapter since we haven't been tested on it yet.

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sigma bonds have more overlap and the pi bonds only make contact side by side

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cis means same side and trans means opposite sides

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Cl bonds have more stability due to higher electronegativity.

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There will be one sigma and two pi bonds.

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It is because lone pairs are areas of high electron density that have effects of repulsion that alter the shape of a molecule.

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No the type of bond doesn't matter but the number of areas of high electron density do.

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Expanded octet is when an atom can hold more than 8 valence electrons in a lewis structure. So some atoms like sulfur, phosphorous, or chlorine are more prone to expanded octets. This is something you should simply keep in mind.

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Basically 2d-2f. If you read those three chapters and do the problems you should be prepared.

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Is it possible to determine when a molecule will have resonance? Basically I'm wondering how do you know when there will be multiple lewis structures for one molecule.

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Don't trust atoms, they make up everything

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Intramolecular forces are way harder to break because entire bonds have to be broken. Intermolecular forces are just breaking weak dipole moments.

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Drawing Lewis structures is very helpful, because it helps you avoid making careless mistakes.

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On the syllabus it says the class takes the average of the total points out of 500 that students get in the class. Then it gives grades to students accordingly.

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That is not possible because formal charge is based off the specific composition of a molecule. An atom doesn't own or have a specific formal charge.

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Yes, since the K ion has a full valence shell it will require or release much more energy when an electron is added or taken away.

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The reason is because atoms with high ionization levels aren't as likely to give up electrons to make the atom a positively charged cation. Additionally, with more energy required to remove electrons these atoms aren't as compatible with the fluid electron flow of conducting electrical currents.

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Basically the atom with the lowest ionization energy since these atoms are the most likely to give up or share their electrons.

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Yes there are a few exceptions to the octet rule. For example, molecules like NO have an odd number of electrons and in molecules like BCl3 not all the atoms possess 8 electrons.

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Atomic radius gets bigger and farther down to the left. Ionic Radius gets bigger farther down to the left, but there isn't a strong correlation. Electron affinity gets stronger to the left and ionization energy gets larger to the right.

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It is the ability to attract more electrons

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S<P<D<F because the farther the distance of the orbital from the nucleus the higher the energy that is required to keep the orbital from resisting the inward pull. As a result, the farthest orbital requires the greatest amount of energy

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Everything is handed back in discussion and I think they might be posted online at some point.

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For the purposes of this class the speed of light probably will always stay the same. Though I think in certain mediums like water or glass the light of speed can change.

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Ya just knowing the general wavelength range for certain electromagnetic radiation like visible light or x-rays should be enough.

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Yes there is nothing different in calculating an atom, molecule, or formula unit. It just has different meanings and units that need to be marked in your final answer.

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I remember in high school that there were some elements that always had to be in pairs. The reasoning was that hydrogen would be unstable as a singular atom in itself. So I guess it is necessary to have to do an extra step of multiplying molar mass by 2.

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Ya I was in the same boat. I spent some time trying to figure out why the book had only 3 sig figs. But clearly the answer needs to have 4.

CHEMISTRY COMMUNITY

Search found 32 matches

Re: Acceptor and Donor?

Re: Neutralization

Re: Colors and Frequency

Re: Speed of Light

Re: Final

Re: Why are sigma bonds stronger than pi bonds?

Re: cis and trans

Re: HOCl vs HOI

Re: Triple bond?

Re: Lone Pairs

Re: Double and Triple Bonds

Re: Expanded Octet

Re: Test 3

Resonance

Re: Post All Chemistry Jokes Here

Re: Intra vs Intermolecular forces

Re: Bond Angles

Re: Class Grading

Re: Formal Charge

Re: Electron Affinity

Re: ionization energy

Re: Lewis Structures

Re: Octet Rule

Re: Periodic Table Trends

Re: Electron Affinity

Re: Energy levels of orbitals?

Re: Grades??

Re: Speed of Light

Re: Colors and Frequency

Re: atoms vs molecules vs formula units?

Re: When to use H vs H2

Re: Significant Figures for E.21 (b)