CHEMISTRY COMMUNITY

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Coordinate covalent bonds have one species donate both electrons to the forming the bond while usually covalent bonds have one electron come from each atom.

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momentum and wavelength directly affect each other.

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Draw the shape of the p orbital first and then draw it on the x axis and y axis and the z axis.

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Lewis acids become negatively charged and accepts electrons.

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Expanded octet is when an element can have more than 8 electrons, such as elements in the d-orbital.

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The unique rate stays constant for all reactants and depends on coefficients of the reaction.

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The accuracy of formal charge should be prioritized over having a full octet, because formal charge is usually more guaranteed while octet rule comes with exceptions.

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Noble gases have stable configurations, so they don't have electronegativity values.

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Delta negative means the atom accepts electrons and delta positive means the atoms donates electrons.

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The number should be a whole number, but if it isn't and it's really close you can round it up.

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Atomic radius increases down a group because additional shells create a greater distance from the nucleus and decreases across a period as the effective nuclear charges increases.

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The answer would be 3 because p has one subshell, which will have 3 orbitals which all share the same energy level.

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Elements are diatomic because their valence shells aren't completely filled by electrons; therefore, electrons are shared a lower energy state is achieved.

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Double and triple bonds don't affect bond angles, but the lone pairs do.

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Aim to get formal charge close to 0 and base the placement of your radical on that.

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You don't have to look at the charge when looking at anions, only consider it when when ions have positive charge.

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Use Ek=hv-work to solve for work functions and use other variables given in the problem to plug in!

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Molarity is the measure of concentration of a substance in a solution and is used to calculate concentrations, volumes, or moles of a solution, using M(initial)xV(initial) = M(final)xV(final)

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L or mL is fine, just make sure to have matching units all throughout. It wouldn't hurt to change it at the beginning, since molarity is moles/L.

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H2O is water and H2O2 is hydrogen peroxide. What is H2O4?
Drinking.

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To determine whether or not a molecule is polar or nonpolar, you have to consider the electronegativity between atoms, and if the atoms are symmetrical, it would most likely be nonpolar.

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Unique rate depends on the stoichiometric coefficient, but stays the same for all products and reactants in the reaction.

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Actual yield is usually given in the problem, but it can be calculated from an experiment.

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Taking the number of moles you get after a reaction and subtracting the number of moles from before the combustion should give you the net number of moles.

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You'd divide by 6.0221 x 10^23 (Avogadro's Number), and then to convert from grams to kilograms by multiplying 10^3.

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Keeping as many significant figures when calculating gets you closest to the correct answer! You can round to the appropriate amount of significant figures at the end.

CHEMISTRY COMMUNITY

Search found 26 matches

Re: Difference between coordinate covalent and covalent bond

Re: Heisenberg and Wavelength

Re: Drawing orbitals

Re: Determine Lewis Acid

Re: Expanded Octet

Re: Unique Reaction Rates [ENDORSED]

Re: Octet vs formal charge

Re: Electronegativity

Re: delta positive delta negative

Re: Going from empirical to Molecular formula

Re: Atomic Radius

Re: degeneracy of the a 4p orbital

Re: diatomic elements

Re: Double/Triple Bonds

Re: Radicals

Re: Determining the polarizability

Re: Work Function

Re: MOLARITY

Re: Finding the volume of stock solution to dilute

Re: Post All Chemistry Jokes Here

Re: Polar vs Non polar

Re: Unique Reaction Rates [ENDORSED]

Re: Actual Yield

Re: Net Number Of Moles

Re: Molar Mass to Kg

Re: When to round the answers to significant figures