CHEMISTRY COMMUNITY

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This means that the pH is less than 7 and hydronium ions (H3O+) are present.

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The lower the order, the more common the reaction is

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they are different but related

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It's the slope of the tangent line.

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mol^(-(p-1) L^(p-1) sec^-1

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It's about excess of one reactant

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I think it will be online.

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Only for first-order reactions

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change in enthalpy (heat)

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It's the one being reduced

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Only energy exchange but no matter exchange

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It means the temperature remains the same

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I think they are the same

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I think no

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negative log of the concentration of H+

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It defines the voltage of other electrodes.

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Kinetics is about rate, while thermodynamics analyzes whether the reaction is spontaneous.

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They are constants for ideal gases

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Yes it is!

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cathode is the site of reduction and anode is the reverse

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Most with metals

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It depends on the units

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Thank you for sharing!

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I think yes

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The energy available to do work

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Most metals are conducting

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Great discussion above!

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Because we need electrode

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By looking at the flow of electron

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Wonderful discussion above

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Wonderful discussion above

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U = q + w

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Yes, delta V = 0.

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Inspiring discussion above!

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energy transfer to or from a system can still occur with work (w).

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No but that's helpful.

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Enthalpy is the total energy or heat of a certain reaction, while heat is the energy that is moving in between objects in that reaction.

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Enthalpy is the total energy or heat of a certain reaction, while heat is the energy that is moving in between objects in that reaction.

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Force and movement

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the change of internal energy

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When the bond is more polarized, it's harder to give off protons.

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I think no.

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One is about acid and another is about base.

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PV = nRT

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I think we can judge based on our knowledge of strong acid and base.

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You don't have to convert between them.

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This is just a natural rule. We define equilibrium by it.

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Both Kc and Kp can be used

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Q is at anytime but K is at equilibrium.

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PV = nRT

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K is the ratio of [P] / [R]

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Ligands attch to metal molecules.

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When it has multiple protons.

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We can look at the periodic table.

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Acid rain is bad for the environment.

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An acid with only one proton.

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The definitions of acids are slightly different.

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You can try to draw the Lewi's structure.

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This post is really my source of happiness.

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We can judge based on its property (like what we do to salts).

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Yes. Dots represent valence electrons in Lewi's structures.

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Plus, there is a list in the link of homework.

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Maybe we can just remember the strong acid and base.

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There are various bonds obviously.

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It's about 109.05.

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The less the formal charge, the more stable the molecule would be.

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109.5 degrees.

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I hope I can get into 14B.

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One includes lone pairs and the other one only includes atoms.

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I think Xe can have more than 8 electrons.

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After 3d block, there can be more than 8 electrons.

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The shape of pi bonds doesn't allow rotation.

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Great discussion above!

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They are exceptions of the octet rule.

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Dipole-dipole is permanent but induced dipole is caused by the unstoppable moving of electrons.

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I think it can be determined by the flow of electrons and protons.

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It's an interesting question. I'm not sure but I think we should consider intermolecular force.

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They are formed from temporary dipole force.

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I think that's true.

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Because more electrons are attracting each other.

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Yes. Because there are 3 hydrogen bonds between G-C while only 2 between A-T.

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I think it's only used to double check the result.

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Because oxygen is partially negative while hydrogen is partially positive.

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I think there will be exceptions.

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I think there will be exceptions.

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I think covalent bonds are stronger since they will not dissolve in water.

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I typically round to the hundredth

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E=PC can be applied to particles that DONT have a rest mass (photons, which are particles). It can not be applied to particles that have a rest mass (almost everything).

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electrons have a probability to be found on the orbital

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We don't need to memorize the equation in midterm.

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We have a page of slides on Friday the 15th that indicates only contents learned before will be covered in the midterm

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The energy of the incoming photon is equal to the kinetic energy of the ejected electrons plus the threshold energy.

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It's the threshold energy.

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Generally, it is too small to be measured. but things change when we need to do calculations in the quantum level.

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3.29 x 10^15 Hz for our class.

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Some wavelengths are too small to be measured.

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If the photon has more energy than the electron, the energy difference will become the kinetic energy of the electron.

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I think we can print formulas before exams.

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When I encounter confusing problems and notes I go back to textbooks to find an anwser.

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