CHEMISTRY COMMUNITY

Joanne Reyes 1L

yes, I think both names are correct answers and considered the same

Joanne Reyes 1L

What substance has the formula HIJKLMNO? Water
hehe

Joanne Reyes 1L

Hi, I just wanted to clarify: when naming a hydrocarbon using its common name, iso- and neo- count in alphabetizing but tert- and sec- do not count, is this correct?

Joanne Reyes 1L

What is the name of the molecule CH2O?

A: Seawater

Joanne Reyes 1L

Karina Keus 3L wrote:I'd post a funny chemistry joke, but all the good ones Argon!

Nah, I got one. Argon walks into a bar. The bartender says "sorry, we don't serve noble gases here." Argon doesn't react.

Joanne Reyes 1L

When writing cell notation, how do we know whether to use Pt or another metal? Or would we just write Platinum to be safe?

Joanne Reyes 1L

I was trying to rewatch Dr. Lavelle’s podcast lectures and the website told me to download silverlight so I did but it still doesn’t work. I was using safari, and I was able to watch the podcasts last week but now it won’t work. Help please lol

Joanne Reyes 1L

This question says "Assume COF₂ adopted disordered arrangements in its crystal form, what would its residual molar entropy be?" and the answer is W = 3^NA, S = k ln 3 ^NA = R ln 3 = 9.1 J/K. How would I go about solving this problem? Thanks.

Joanne Reyes 1L

I think this happens because although the overall heat change is zero, work can still be put into the system as heat energy, sometimes very slowly, but the same amount of energy/heat leaves the system so the over heat change is zero and the temperature stays constant.

Joanne Reyes 1L

A process is reversible when the overall entropy is equal to zero (isentropic). A process is irreversible when the entropy increases. Hope that helps a little bit

Joanne Reyes 1L

I'm having trouble remembering which compounds are strong/weak acids/bases. Is there a way to distinguish a strong acid from a weak one? or is it more of a memorization kind of thing? Thanks.

Joanne Reyes 1L

Hi, Acidic oxides tend to contain elements from the right side of the periodic table while basic oxides contain elements from the left side of the table (groups 1&2). So BaO is a basic oxide and SO3 is a acidic oxide

Joanne Reyes 1L

You might be able to if you talk to your TA and he/she has another discussion section at a different time. Usually TA's are cool and will understand, email him/her or talk in person!

Joanne Reyes 1L

A ligand is any ion or molecule attached to a central metal atom
So in the compound [Fe(CN)₆]^4- there are 6 ligands because there 6 (CN) attached to the iron

Joanne Reyes 1L

Does anyone have tips on what keywords to look for in a word problem so we know which equations to use? For example, "work function", "emits/absorbs electrons" implies the photoelectric effect. Anything like that, but for other equations.

Thanks!

Joanne Reyes 1L

I think there are some MO questions because we won't have to turn it in before the test. We turn in our workbooks right before our midterm, so we'll learn MO by then :)

Joanne Reyes 1L

Take O 2 for example, it has 6 valence electrons each (12 total) but when drawing out the MO energy diagram, you notice that the \prod ^{^{*}}Px and \prod ^{*} Py bond have unpaired electrons (due to hund's rule). Although the molecule has an even number of electrons, it is still paramagnetic. It he...

Joanne Reyes 1L

In what ways do ionic bonds have covalent bond characteristics?

Joanne Reyes 1L

Hi, this is probably a really basic question, but how exactly do we measure an angstrom? and is a molecule more stable if it has a shorter or length angstrom length between its bonds?

Thanks

Joanne Reyes 1L

I understand now, thanks for the help!

Joanne Reyes 1L

Can someone explain why Chromium and Copper are the exceptions in electron configuration? Is there a reason why the electrons have to be in a different orbital?

CHEMISTRY COMMUNITY

Search found 21 matches

Re: Naming Conventions

Re: Chemistry Jokes

Alphabetizing when naming

Re: Chemistry Jokes

Re: Chemistry Jokes

Cell Notation - which metal to use for anode/cathode

Unable to watch podcasts

Standard residual entropy problem

Re: Isothermal

Re: Reversible and irreversible process

How to identify weak/strong acids/bases

Re: Basic and Acidic Oxides

Re: Quiz 3 question?

Re: Determining Ligands

Word problem keywords

Re: Quiz 2 Material

Re: Diamagnetic Molecules

Ionic & Covalent Bond Characteristics

Angstrom

Re: Chromium and Copper

Chromium and Copper