Search found 51 matches
- Tue Dec 03, 2019 3:41 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: 9C.5
- Replies: 4
- Views: 260
Re: 9C.5
It depends on the shape and how many bonding sites they have available. for this question, you can check if the atoms have lone pairs.
- Tue Dec 03, 2019 3:34 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: 9C5 (b)
- Replies: 1
- Views: 157
Re: 9C5 (b)
Dr. Lavelle sent out an email with a chemistry community link addressing this question. He explained it really thoroughly so I would just recommend reading that!
- Tue Dec 03, 2019 3:26 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Textbook 9C.9
- Replies: 2
- Views: 221
Re: Textbook 9C.9
part c) is 6 because there are 6 ligands = 6 attachments sites. There are 2 Cl atoms and 2 bidentate ligands. 2 bidentate ligands means that there are 4 attachment sites in total (2x2 = 4) so in total there are 2+4 = 6 attachments sites part d) is also 6 because hexadentate means there are 6 binding...
- Tue Dec 03, 2019 3:14 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: Anion Exceptions
- Replies: 3
- Views: 245
Re: Anion Exceptions
Those are exceptions of anions not being able to act as acids. HSO4- and H2PO4- are deprotonated forms of H2SO4 and H3PO4 and can act as extremely weak acids.
- Tue Dec 03, 2019 3:10 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Naming
- Replies: 2
- Views: 193
Re: Naming
I think you should be able to tell based on the element's symbol on the periodic table
- Mon Nov 25, 2019 11:12 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Why do chemists like working with ammonia?
It's pretty basic stuff.
It's pretty basic stuff.
- Mon Nov 25, 2019 11:11 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Why does a hamburger yield lower energy than a steak?
Because it's in the ground state.
Because it's in the ground state.
- Mon Nov 25, 2019 11:10 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What did the scientist say when he found two isotopes of Helium?
HeHe
HeHe
- Mon Nov 25, 2019 11:09 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Did you hear that oxygen went on a date with potassium?
It went OK.
It went OK.
- Mon Nov 25, 2019 11:07 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
How often do i tell chemistry jokes?
Periodically
Periodically
- Mon Nov 18, 2019 11:53 am
- Forum: Resonance Structures
- Topic: Bond length
- Replies: 5
- Views: 423
Re: Bond length
Yes, they are all the same.
- Mon Nov 18, 2019 11:52 am
- Forum: Hybridization
- Topic: Hybridization
- Replies: 3
- Views: 168
Re: Hybridization
The hybridization goes to 2p as well because it takes less energy to go to 2p rather than double up with another electron in the 2sp^2 orbitals. This also checks out with the molecular shape!
- Mon Nov 18, 2019 11:43 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: AXE notation
- Replies: 10
- Views: 621
Re: AXE notation
AXE notation is helpful because if all molecules with the same AXE formula have the same molecular shape!
- Mon Nov 18, 2019 11:38 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Axial and Equatorial Lone Pairs
- Replies: 1
- Views: 131
Re: Axial and Equatorial Lone Pairs
Think about which and how many bonding pairs the lone pairs are acting with! If you're deciding between axial or equatorial placement, choose the orientation that minimizes repulsion, or interacts with the least number of bonding pairs. In terms of molecular shape, they aren't taken into account. On...
- Mon Nov 18, 2019 11:30 am
- Forum: Student Social/Study Group
- Topic: Topics on Test 2
- Replies: 2
- Views: 144
Re: Topics on Test 2
You also need to know sigma and pi bonds!
- Thu Nov 14, 2019 12:15 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Two atoms bump into each other.’I think I lost an electron.’ The other asks: ‘Are you sure?’ The first replies: ‘I’m positive.’
- Thu Nov 14, 2019 12:15 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Are you a diatomic molecule? Because you attract nothing.
- Thu Nov 14, 2019 12:14 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Chemical jokes are boron… however physics jokes have potential.
- Thu Nov 14, 2019 12:14 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Some guy tried to sell me sand for a thousand bucks yesterday. It was such a silicon.
- Thu Nov 14, 2019 12:13 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Hey know any good jokes about Sodium?
Na
Na
- Mon Nov 11, 2019 12:54 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What is the chemical formula for sea water?
CH2O
CH2O
- Mon Nov 11, 2019 12:54 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Why was the mole of oxygen molecules excited when he left the singles bar?
He got Avogadro's number!
He got Avogadro's number!
- Mon Nov 11, 2019 12:53 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What element is a girl's future best friend?
Carbon.
Carbon.
- Mon Nov 11, 2019 12:53 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What did one charged atom say to the other?
I've got my ion you.
I've got my ion you.
- Mon Nov 11, 2019 12:52 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What is the chemical formula of coffee?
CoFe2
CoFe2
- Fri Nov 01, 2019 5:23 pm
- Forum: Properties of Electrons
- Topic: Speed of electromagnetic radiation
- Replies: 2
- Views: 320
Re: Speed of electromagnetic radiation
Yes, the speed is always constant. This way, you can solve for the frequency of a wave given the wavelength and vice versa.
- Fri Nov 01, 2019 5:20 pm
- Forum: Octet Exceptions
- Topic: radical
- Replies: 5
- Views: 411
Re: radical
Free radicals fit into the octet rule because they are unpaired and thus, do not fit the octet or 8 valence electron standard.
- Fri Nov 01, 2019 5:18 pm
- Forum: Dipole Moments
- Topic: identification
- Replies: 3
- Views: 205
Re: identification
A dipole moment occurs between two atoms if there is a large difference in electronegativity.
- Fri Nov 01, 2019 5:15 pm
- Forum: Dipole Moments
- Topic: Week 6
- Replies: 1
- Views: 117
Re: Week 6
Yes
- Fri Nov 01, 2019 5:13 pm
- Forum: Dipole Moments
- Topic: direction of arrow
- Replies: 2
- Views: 147
Re: direction of arrow
Yes. The arrow should start from the electropositive atom and end at the electronegative atom.
- Thu Oct 24, 2019 4:30 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Exothermic Reactions? I studied them before they were cool.
- Thu Oct 24, 2019 4:29 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Why are chemists so good at solving problems?
They have all the solutions.
They have all the solutions.
- Thu Oct 24, 2019 4:28 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
I told a good chemistry joke, but there was no reaction):
- Thu Oct 24, 2019 4:27 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
A neutron walks into a bar and asks, how much for a beer?
The bartender looks up and says, for you no charge.
The bartender looks up and says, for you no charge.
- Thu Oct 24, 2019 4:25 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What do you do with a sick chemist?
If you can't Helium and you can't Curium, then you might as well Barium.
If you can't Helium and you can't Curium, then you might as well Barium.
- Mon Oct 14, 2019 8:17 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Superman is a man. Batman is a man. Spiderman is a man. So why is Ironman a woman?
Because she is a Female.
Because she is a Female.
- Mon Oct 14, 2019 8:15 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
A chemistry professor couldn't resist interjecting a little philosophy into a class lecture. He interrupted his discussion on balancing chemical equations, saying, "Remember, if you're not part of the solution, you're part of the precipitate!"
- Mon Oct 14, 2019 8:14 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What kind of fish is made of two sodium atoms?
2Na
2Na
- Mon Oct 14, 2019 8:13 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
What is HIJKLMNO?
H20!
H20!
- Mon Oct 14, 2019 8:09 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009017
Re: Post All Chemistry Jokes Here
Why did the white bear dissolve in water?
Because it was polar!
Because it was polar!
- Mon Oct 07, 2019 11:51 am
- Forum: SI Units, Unit Conversions
- Topic: Molar Ratio
- Replies: 4
- Views: 1306
Re: Molar Ratio
The molar ratio can convert any one substance to any other substance as long as you know the ratio of one to another. Therefore, it applies to single compounds (ex: you can use mole ratios to find mass of H in given amount of H2O), or to an entire reaction (in which you would use the balanced equati...
- Mon Oct 07, 2019 11:47 am
- Forum: Molarity, Solutions, Dilutions
- Topic: G 25
- Replies: 7
- Views: 388
Re: G 25
You don't need to know the specific health benefits of the solution. What's important is if there's any active reagent, and since there isn't any remaining at the end, the solution would have no effect at all.
- Mon Oct 07, 2019 11:35 am
- Forum: Properties of Light
- Topic: Work Function
- Replies: 4
- Views: 130
Re: Work Function
The work function refers to the energy needed, while the threshold energy refers to the frequency of light needed. The two are the same in calculations.
- Mon Oct 07, 2019 11:32 am
- Forum: Einstein Equation
- Topic: Wavelengths
- Replies: 5
- Views: 334
Re: Wavelengths
The given energy is the threshold energy. Rearranging and combining the equations E=hv and c=vλ gives us λ=hc/E. plugging in the values into this equation gives the wavelength of light with sufficient energy.
- Mon Oct 07, 2019 11:27 am
- Forum: Molarity, Solutions, Dilutions
- Topic: G 11
- Replies: 2
- Views: 107
Re: G 11
Since the givens 0.278mol and 4.50mmol have 3 significant figures, then the answer should have 3 significant figures. The answer would be 0.0162
- Mon Oct 07, 2019 11:23 am
- Forum: Limiting Reactant Calculations
- Topic: Question about Calculating Limiting Reactants
- Replies: 5
- Views: 218
Re: Question about Calculating Limiting Reactants
Yes, as long as you use mole ratios from the balanced equations to compare the amount of moles of reactants.
- Tue Oct 01, 2019 10:36 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: G 25
- Replies: 7
- Views: 356
Re: G 25
The amount of solute remains the same, but the volume changes. Since the solution is being diluted so dramatically, the 10 mL sample taken at the end has close to zero solute in it.
- Tue Oct 01, 2019 10:23 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Units in Answer
- Replies: 18
- Views: 805
Re: Units in Answer
The question usually specifies what unit you should put your answer in, but the general rule is if the givens are in grams, the answer should be in grams, and if the givens are in moles, the answer should be in moles.
- Tue Oct 01, 2019 9:55 am
- Forum: Limiting Reactant Calculations
- Topic: Textbook question M11
- Replies: 1
- Views: 56
Re: Textbook question M11
The answer for part B is 5.77g of P4O10 so your answer is correct. In order to solve part C, use the mass of the excess O2 for the second part of the reaction, and then divide that by the molar mass to find the number of moles of O2. Then, using the mole ratio of 1 mol P4O6 / 2 mol O2, convert moles...
- Tue Oct 01, 2019 9:39 am
- Forum: Limiting Reactant Calculations
- Topic: Homework Problem E9
- Replies: 1
- Views: 61
Re: Homework Problem E9
The formula is written as MgSO4·7H2O. Heptahydrate is important in writing the formula. If it's not included, you would calculate the wrong molar mass of the compound.
- Tue Oct 01, 2019 9:25 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Fundamental F Question 1
- Replies: 2
- Views: 83
Re: Fundamental F Question 1
The question is asking for the length of the fiber created by stringing together Ag atoms. To find the length, use the given radius, 144pm to find the diameter, how "long" the atom is, which is 288pm. This is how long one atom is. To find the length of 1.00mol Ag, first calculate the numbe...