CHEMISTRY COMMUNITY

Bryce Bentley 1l

Bond angle strain occurs when a molecule's bonds are not in their ideal positions. For a carbon atom bonded with four other atoms, the ideal shape tetrahedral with 109 degree angles. If the bonds are not at that exact degree, then there's bond angle strain. Cyclopropane, cyclobutane, cyclopentane, e...

Bryce Bentley 1l

cyclopropane has only one conformation; it is only found with all of its carbon atoms in the same plane. That's why it is a very unstable molecule

Bryce Bentley 1l

Nucleophilic substitution is one step with only one transition state. Electrophillic addition is 2 steps with two transitional states

Bryce Bentley 1l

The formula for alkynes is C(n)H(2n-2) n is the number of carbon atoms. So for propyne it is C(3)H(2*3-2) which comes out to C3H4.

Bryce Bentley 1l

Yes the equation would work in those cases. Remember even though R is called the gas constant, it is still used in equations regardless of the phase involved(like the equation deltaG=-RTlnK)

Bryce Bentley 1l

In a multi-step equation, how can we tell which step is the slow one step and which are the fast ones? Is it usually given or is there some way to figure it out on our own?

Bryce Bentley 1l

GrantSugimura_1B wrote:I have a ton of chemistry jokes, I'm just afraid they won't get a good reaction.

As long as the reaction is spontaneous you are good! No energy will be needed to make people laugh!

Bryce Bentley 1l

Hey sara! Isothermal means that no heat can be transferred in or out of a system. The system cannot lose or gain energy from heat transfer. The heat within a system that is isothemic can be converted to or from work. This makes q=-w which makes q-w=O. The total energy in the system does not change, ...

Bryce Bentley 1l

A man accidentally dropped his tooth in a solution of HCl. The man was so shocked that it dissolved so quickly that he just had to find the Molar concentration!!

Bryce Bentley 1l

I hope the electrochemistry portion of the midterm won't Reduce my mood!

Bryce Bentley 1l

How much free energy does the average phone have when its battery is full?

None! Electricity doesn't pay for itself!

Bryce Bentley 1l

Thermodynamic pickline:
You must have a low heat capacity, because it doesn't take much joules (jewels) to make you hot!!

Bryce Bentley 1l

Residual entropy is the entropy when a perfect crystal is close to absolute 0. Since theoretically the temperature would have no effect on the substance's entropy, the residual entropy is based off of the molecules of the substance.

Bryce Bentley 1l

The equation Q=C x Delta T is used when we are given the total heat capacity for substance. this equation, Q=n (or mols)x C x Delta T, is used when we only know the specific (or molar) heat capacity of a substance and want to find the total amount of heat released or absorbed. Always pay attention t...

Bryce Bentley 1l

The mass is only important when you want to find the specific heat capacity which gives you the C value per gram. For a calorimeter you typically don't care about the specific heat capacity, just the heat capacity overall so you can measure the total amount of heat a reaction gives off.

Bryce Bentley 1l

Yes, the value for the Enthalpy of a reaction has the opposite sign of its reverse reaction but the same absolute value.

Bryce Bentley 1l

"Q" is the reaction quotient at a specific time during a reaction. If Q does not equal K then the reaction has not reached equilibrium yet. If Q is less than K, then the reaction will favor the products and move to the right. If Q is greater than K, then the reaction will favor the reactan...

Bryce Bentley 1l

(am) means that the substance was dissolved in ammonia

Bryce Bentley 1l

For the names of anionic ligands, do we use the new IUPAC name convention or the "name" thats listed under "names*"in the course reader?

Bryce Bentley 1l

I'm pretty sure the De brogolie equation had to be to show your understanding of the equation and its use. Also I'm not sure if your way worked but your method should only be using for EM radiation. The debroglie is used to tell how noticeable the wavelength characteristics of a moving object is, wh...

Bryce Bentley 1l

You use double bonds so that all of the atoms fulfill their octet. O needs two more to fill octet so it shares two of its own while Xe does the same. That also gives the O zero formal charge which makes the molecule more stable. So when determining bonds, take into account how many electrons are nee...

Bryce Bentley 1l

In most molecules, carbon forms a double bond with oxygen to form a stable molecule with less energy. In the case of Carbon Monoxide it forms a triple bond but that gives oxygen a formal charge of +1 and carbon a charge of -1. If it was a double bond then there would be 0 formal charge for both. So ...

Bryce Bentley 1l

Look at the element Lanthanum and its atomic number, then look at Hafnium which is right beside it. Notice that the atomic numbers of the two are far apart from each other in value. That's because in between the two elements there are 14 more elements which are in the f-block. Look at a periodic tab...

Bryce Bentley 1l

Yes because the electrons in the 4s orbital always get removed before the ones in the 3d orbital. If Zinc lost one electron then it would be isoelectronic with copper.

Bryce Bentley 1l

My TA said that we won't have to worry about learning any equations like that for the other elements because they are far more complex. And I believe the Rydberg equation that we were taught works for hydrogen atoms because they have only one electron that we have to worry about. If you remove one e...

CHEMISTRY COMMUNITY

Search found 25 matches

Re: bond angle strain

Re: Conformations [ENDORSED]

Re: Nucleophilic Substitution and Electrophilic Addition

Re: Homework 1.5c

Re: Arrhenius Eq. and gas state reactions

Slow step vs fast step

Re: Chemistry Jokes

Re: Isothermal conditions and delta U=0

Re: Chemistry Jokes

Re: Chemistry Jokes

Re: Chemistry Jokes

Re: Chemistry Jokes

Re: Residual Entropy

Re: Heat Transfer Equations

Re: Heat Capacity of Calorimeter

Re: Enthalpies of exothermic rxns

Re: Q and K

Re: (am) state

names for anionic ligands

Re: when to use photoelectric effect or debroglie?

Re: Xenon Trioxide

carbon bonding with oxygen

Re: Ground State Electron Configuration with f-block

Re: Manganese Cation

Re: Manipulating the Rydberg Equation