CHEMISTRY COMMUNITY

Lydia Luong 4L

All the good Chemistry jokes Argon :(

Lydia Luong 4L

Are you made out of Copper and Tellurium? Because you're CuTe!

Lydia Luong 4L

OMG did you know that Oxygen and Magnesium were a couple?

Lydia Luong 4L

Nope!

Lydia Luong 4L

Lydia Luong 4L

Don't worry about it, they will tell you in the question :)

Lydia Luong 4L

No, only use the vertical line for solids

Lydia Luong 4L

I think you should just be careful with sig figs on the final just to be safe! I don't think it would be stressed that much, though.

Lydia Luong 4L

Lydia Luong 4L

Yes, assume A=1 unless otherwise stated.

Lydia Luong 4L

Cathode is always on the right side of a cell diagram and anode is always on the left side.

Lydia Luong 4L

You can use it to find the pH of a solution.

Lydia Luong 4L

I just found out that there's a past final online!
http://www.bruintestbank.com/chemistry/ ... lavalle-1/

Lydia Luong 4L

Yes, always add q and w!

Lydia Luong 4L

Yes, if you calculate the Ecell by adding the Ecathode and the Eanode together, you need to change the sign of Eanode.

Lydia Luong 4L

Always include H+

Lydia Luong 4L

These phrases do not mean the same thing

Lydia Luong 4L

Yeah, I believe your expectation is correct.

Lydia Luong 4L

Thank you so much this post really helped me!

Lydia Luong 4L

Use the nFE formula

Lydia Luong 4L

kJ/mol

Lydia Luong 4L

This link helped me a lot with Le Chatelier's, hope it helps you out too! https://www.google.com/url?sa=i&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwj0udDplYbhAhUZGDQIHYFHDMgQjRx6BAgBEAU&url=https%3A%2F%2Fsocratic.org%2Fquestions%2Fwhat-is-le-chatelier-s-principle-in-chemist...

Lydia Luong 4L

We must always make sure our equations are balanced first before we do anything else. Since there were 3 Oxygens in the products side, we must multiply Oxygen by 3/2 to balance the equation.

Lydia Luong 4L

I wouldn't worry about it! We will always be given enough to solve the problem.

Lydia Luong 4L

In the first step, a catalyst is a reactant and the intermediate is a product.

Lydia Luong 4L

Either is fine!

Lydia Luong 4L

Yes, you are correct @hanna_maillard3B

Lydia Luong 4L

I would try to check your sig figs just in case!

Lydia Luong 4L

Yes, you need to write bis- because the ligand includes a di-.

Lydia Luong 4L

I agree with the person above. I don't think it is either.

Lydia Luong 4L

electrons in the p field further away from the nucleus, which causes a higher nuclear attraction, since more distance requires more energy to pull it together.

Lydia Luong 4L

Yes we do!

Lydia Luong 4L

You're right, the book's answer is wrong

Lydia Luong 4L

amphoteric --> can act as acid or base.
amphiprotic--> can donate or accept protons/hydrogen

Lydia Luong 4L

I think we should just memorize it to be safe!

Lydia Luong 4L

yes, HF is weaker than HI. longer bond = weaker

Lydia Luong 4L

Lydia Luong 4L

number of electrons

Lydia Luong 4L

The molarity is usually given to you!

Lydia Luong 4L

I haven't had any issues with using 3.0 x 10^8, I think you should be able to use this!

Lydia Luong 4L

Compounds with stronger intramolecular forces will have higher boiling points, because it will be harder to break apart those bonds. Meanwhile, compounds with weaker intramolecular forces will have lower boiling points, because it doesn't take as much work to break apart those bonds.

Lydia Luong 4L

No, but I think Lavelle expects us to know its conversion.

Lydia Luong 4L

Ionic--> transfer of electrons, covalent--> sharing of electrons

Lydia Luong 4L

Yes, we get the formula sheet that we always get on tests :)

Lydia Luong 4L

For me, for electronegativity, I just remember that Fluorine is the most electronegative element.

Lydia Luong 4L

Yes, I think it should be [Kr]4d^10

Lydia Luong 4L

v= valence electrons, l= lone pairs, s= shared electrons

Lydia Luong 4L

there aren't any tests in the test bank :(

Lydia Luong 4L

eight free response questions!

Lydia Luong 4L

No, there are things that you cannot use De Broglie's equation on because they do not have rest mass. You can only use De Broglie's equation on things that have rest mass.

Lydia Luong 4L

He hasn't uploaded any new modules yet that I know of.

Lydia Luong 4L

In the equation for kinetic energy, mass is not squared. Only velocity is.

Lydia Luong 4L

I know that the s-, p-, d-, and f- represent how many electrons can fit in a certain shell, but would anyone also know why they're specifically labelled those letters? Does it stand for something ? The letters stand for sharp, principal, diffuse, and fundamental, but I wouldn't worry about knowing ...

Lydia Luong 4L

I think 3.0 x 10^8 is fine!

Lydia Luong 4L

Yes, I think we are supposed to know that the formula for the combustion of a molecule would be:
tha molecule + _O2 --> _H2O + _CO2.

Lydia Luong 4L

I think you will have to multiply the molar mass of Hydrogen by two.

Lydia Luong 4L

High accuracy is when your data results from your lab are close to the number that you were expecting to get from your prediction/calculation beforehand (how "right" your data results are,) even if your results only hit that "right" number only three times out of seven trials. Hi...

Lydia Luong 4L

When writing out chemical compounds, the element with the positive charge always goes first. Hope this helps!

Lydia Luong 4L

Did you know that you can cool yourself to -273.15˚C and still be 0k?

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