Search found 61 matches

by 805169754
Wed Mar 13, 2019 11:30 pm
Forum: First Order Reactions
Topic: Time Conversions
Replies: 6
Views: 161

Re: Time Conversions

Mya Majewski 1L wrote:if your k is in min^-1 and your t is in seconds then what do you do?

You can convert either one as long as it matches/is consistent with the other. You should try to see if the question specifies in what units it wants the answer.
by 805169754
Wed Mar 13, 2019 10:55 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Catalyst vs. Intermediate
Replies: 8
Views: 110

Re: Catalyst vs. Intermediate

You can find a catalyst in the beginning of the reaction and at the end whereas an intermediate is produced and consumed during the reaction.
by 805169754
Wed Mar 13, 2019 10:51 pm
Forum: General Rate Laws
Topic: Rate equations to know
Replies: 5
Views: 70

Re: Rate equations to know

005113695 wrote:You should probably know the different rate laws, and the different equations that can be derived from them or link them to other equations.

The rate equations will be given during the test but you must know to differentiate between them.
by 805169754
Wed Mar 13, 2019 10:46 pm
Forum: *Enzyme Kinetics
Topic: Catalysts
Replies: 11
Views: 443

Re: Catalysts

haleyervin7 wrote:Is there any case where there must be a catalyst for a reaction to occur?

You can think about enzymes, which are considered catalysts, in biological scenarios where they are required for some reactions to occur.
by 805169754
Thu Mar 07, 2019 4:41 pm
Forum: Zero Order Reactions
Topic: zero order rate?
Replies: 14
Views: 524

Re: zero order rate?

You wrote down the correct information. Zero order reactions are not dependent on the concentrations of the reactant
by 805169754
Thu Mar 07, 2019 4:33 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Study Advice
Replies: 30
Views: 364

Re: Study Advice

Sometimes there are worksheets with the answer keys posted here on chemistry community. Those can be helpful if you can't make it to the workshops
by 805169754
Thu Mar 07, 2019 4:31 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Helium walks into a bar. The bartender says, "We don't serve noble gases here." Helium doesn't react.
by 805169754
Thu Mar 07, 2019 4:06 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Silver walks up to gold in a bar and says, "Au, get outta here!"
by 805169754
Thu Mar 07, 2019 3:26 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

I would tell another chemistry joke...
...but all the good ones Argon.
by 805169754
Thu Mar 07, 2019 3:25 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Two chemists walk into a bar.
One says, "I'll have an ‎H2O." The other says, "I'll have an ‎H2O, too." The second chemist died
by 805169754
Thu Mar 07, 2019 3:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Want to hear a joke about sodium, bromine, and oxygen?
NaBrO
by 805169754
Thu Mar 07, 2019 3:23 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Someone threw sodium chloride at me.
I yelled, "That's a salt!"
by 805169754
Thu Mar 07, 2019 3:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

I dare you to lower your body temperature to absolute zero.
I promise you'll be 0K.
by 805169754
Thu Mar 07, 2019 3:21 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What did the thermometer say to the measuring cylinder?
“You may be graduated, but I have several degrees.”
by 805169754
Thu Mar 07, 2019 3:21 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Why did the attacking army use acid?
To neutralize the enemy’s base.
by 805169754
Thu Mar 07, 2019 3:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

How did the hipster chemist burn his hand?
He picked up his beaker before it was cool.
by 805169754
Sun Feb 17, 2019 9:01 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

If you're not part of the solution, you're part of the precipitate.
by 805169754
Sun Feb 17, 2019 9:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What do you do with a dead chemist?
Barium
by 805169754
Sun Feb 17, 2019 8:59 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

If H2O is the formula for water, what is the formula for ice?
H2O3
by 805169754
Sun Feb 17, 2019 8:56 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Why was the mole of oxygen molecules excited when he walked out of the singles bar?
He got Avogadro's number!
by 805169754
Sun Feb 17, 2019 8:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What did the scientist say when he found 2 isotopes of helium?
HeHe
by 805169754
Sun Feb 17, 2019 8:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Anyone know any jokes about sodium?
Na
by 805169754
Sun Feb 17, 2019 8:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What is the show cesium and iodine love watching together?
CSI
by 805169754
Sun Feb 17, 2019 8:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

How about the chemical workers… are they unionized?
by 805169754
Thu Jan 17, 2019 5:41 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What show do cesium and iodine love to watch together?
CsI
by 805169754
Thu Jan 17, 2019 5:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

My friend stopped learning about electron after he got Bohr'd
by 805169754
Thu Jan 17, 2019 5:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Why does hamburger have lower energy than steak?
Because it's in the ground state
by 805169754
Thu Jan 17, 2019 5:13 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What did the chemical agent say?
Name is Bond, Ionic Bond. Taken, not shared
by 805169754
Thu Jan 17, 2019 5:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What is the dullest element?
Bohrium
by 805169754
Thu Jan 17, 2019 5:09 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Why do chemists like nitrates so much?
Because they are cheaper than day rates
by 805169754
Sun Dec 09, 2018 7:21 pm
Forum: Photoelectric Effect
Topic: Kinetic energy
Replies: 11
Views: 2149

Re: Kinetic energy

The formula only works for kinetic energy because kinetic energy is the only energy that is directly proportional to the mass of the object and to the square of its velocity
by 805169754
Sun Dec 09, 2018 7:11 pm
Forum: Ionic & Covalent Bonds
Topic: ionic and covalent bonds
Replies: 5
Views: 171

Re: ionic and covalent bonds

Both electronegativity and electron affinity increase upward for the groups and from left to right across periods of a periodic table.
by 805169754
Sun Dec 09, 2018 6:24 pm
Forum: Bronsted Acids & Bases
Topic: Lewis vs Bronsted
Replies: 10
Views: 276

Re: Lewis vs Bronsted

They are both essentially different approaches to acids and bases like the above posts have explained. The Lewis definition of acids and bases is just a bit more broad.
by 805169754
Sun Dec 09, 2018 5:54 pm
Forum: DeBroglie Equation
Topic: Calculating Velocity
Replies: 9
Views: 382

Re: Calculating Velocity

Lynsea_Southwick_3F wrote:What is the units for momentum, p?
If the mass is in kilograms and the velocity is in meters per second then the momentum is in kilogram meters per second (kg⋅m/s)
by 805169754
Sun Dec 09, 2018 5:48 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Ligands
Replies: 6
Views: 167

Re: Ligands

Anjali_Kumar3E wrote:What is the function of cisplatin?
cisplatin used to treat various types of cancer. It kills cancer cells by damaging DNA and inhibiting DNA synthesis.
by 805169754
Sun Dec 09, 2018 5:45 pm
Forum: Properties of Light
Topic: wavelength
Replies: 11
Views: 510

Re: wavelength

one wavelength equals the distance between two successive wave crests or troughs.
by 805169754
Sun Dec 09, 2018 5:39 pm
Forum: Amphoteric Compounds
Topic: Examples
Replies: 5
Views: 137

Re: Examples

The elements in and close to the diagonal line of metalloids typically form amphoteric oxides
by 805169754
Sun Dec 09, 2018 5:37 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Old chemists never die, they just stop reacting
by 805169754
Sun Dec 09, 2018 5:36 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

If H20 is water, what is H204?
Drinking, bathing, washing, swimming, etc.
by 805169754
Sun Dec 09, 2018 5:30 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What did one ion say to the other?
I've got my ion you.
by 805169754
Sun Dec 09, 2018 5:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What did the scientist say when he found 2 isotopes of helium?
HeHe
by 805169754
Sun Dec 09, 2018 5:19 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What's the fastest Noble gas?
Neeeeeon
by 805169754
Sun Dec 09, 2018 5:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

When I learned how many electrons an oxygen atom needs to fill its first orbital, I was like :O
by 805169754
Sun Dec 09, 2018 5:14 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

What do you do with a sick chemist?
First you try to helium, then you try to curium, but if this fails then you have to barium.
by 805169754
Sun Dec 09, 2018 2:56 am
Forum: Polyprotic Acids & Bases
Topic: polyprotic acids and bases in equations
Replies: 3
Views: 168

Re: polyprotic acids and bases in equations

If at anytime you are confused at these types of questions, you could look at the chemical equation to see if all the hydrogen atoms are accounted for in the reactants and products.
by 805169754
Sun Dec 09, 2018 2:39 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentate
Replies: 3
Views: 109

Re: Polydentate

A few examples of polydentate ligands are oxalate, ethylenediamine and diethylenetriamine. all of these could attach to the central atom in a coordination complex by two or more bonds.
by 805169754
Sun Dec 09, 2018 2:33 am
Forum: General Science Questions
Topic: Studying Methods
Replies: 6
Views: 310

Re: Studying Methods

I would recommend doing the homework problems and going over the review worksheets created by the UAs
by 805169754
Sun Dec 09, 2018 2:29 am
Forum: Naming
Topic: naming compounds
Replies: 6
Views: 138

Re: naming compounds

Karina Jiayu Xu 4E wrote:Do we have to memorize the polydentates for the final?
I think it would be helpful to be familiar with the ones we see most often such as oxalate, ethylenediamine and diethylenetriamine.
by 805169754
Sun Dec 02, 2018 10:40 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs angular?
Replies: 15
Views: 213

Re: Bent vs angular?

There isn't really a difference. Both terms can be used to describe the the molecular shape of AX2E or AX2E2.
by 805169754
Sun Dec 02, 2018 10:33 pm
Forum: Dipole Moments
Topic: Strength of intramolecular forces due to polarity
Replies: 5
Views: 130

Re: Strength of intramolecular forces due to polarity

Usually, increasing the polarization of bonds increases the strength of the intermolecular forces
by 805169754
Sun Dec 02, 2018 9:34 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Notation
Replies: 10
Views: 122

Re: VSEPR Notation

Ethan Breaux 1J wrote:Is VSEPR Notation also referred to as VSEPR Formula?

As far as I know, they should be mean the same thing. I've seen them being used interchangeably.
by 805169754
Sun Dec 02, 2018 9:27 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Notation
Replies: 10
Views: 122

Re: VSEPR Notation

Ethan Breaux 1J wrote:Is VSEPR Notation also referred to as VSEPR Formula?

As far as I know, they should be mean the same thing. I've seen them being used interchangeably.
by 805169754
Sun Nov 25, 2018 10:29 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Do you know what went down between Sodium and Hydrogen?
NaH
by 805169754
Sun Nov 25, 2018 10:26 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

I tried to tell a joke about cobalt, radon, and yttrium
it was CoRnY
by 805169754
Sun Nov 25, 2018 9:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 3
Replies: 38
Views: 639

Re: Test 3

405021651 wrote:Will it be only topics on outline 3?
I think the test would also include topics from outline 4 which is about VSEPR and hybridization
by 805169754
Sun Nov 18, 2018 11:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Did you hear about the dude who got cooled to absolute zero?
He's 0K now
by 805169754
Sun Nov 18, 2018 11:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

How was Oxygen's date with Potassium?
It went OK
by 805169754
Sun Nov 18, 2018 10:51 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Octahedral to Square Planar
Replies: 7
Views: 103

Re: Octahedral to Square Planar

It also helps to look at the VESPR formula notation for the shapes. Octahedral is noted as AX6E0 while Square Planar is noted as AX4E2.
by 805169754
Thu Nov 08, 2018 9:30 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

I wish to apologize for not having more chemistry jokes, but I only add them periodically
by 805169754
Thu Nov 08, 2018 9:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Why did the bear dissolve in water?
its a polar bear
by 805169754
Thu Nov 08, 2018 9:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 891252

Re: Post All Chemistry Jokes Here

Why cant you drink CH2O?
'cause its seawater

Go to advanced search