## Search found 73 matches

Sat Jan 23, 2021 4:29 pm
Forum: Student Social/Study Group
Topic: Logistics for the Midterm
Replies: 11
Views: 45

### Re: Logistics for the Midterm

I believe it should be the same but the exam time is during lecture time instead of discussion time.
Sat Jan 23, 2021 4:25 pm
Forum: Student Social/Study Group
Topic: Lectures on Midterm
Replies: 10
Views: 31

### Re: Lectures on Midterm

It should be information on Weeks 1-3.
Sat Jan 23, 2021 4:25 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling #7
Replies: 1
Views: 36

### Sapling #7

The Kb for an amine is 4.352×10−5. What percentage of the amine is protonated if the pH of a solution of the amine is 9.258 ? Assume that all OH− came from the reaction of B with H2O.

Can someone explain this?
Sat Jan 23, 2021 4:23 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Studying for Midterm #1
Replies: 63
Views: 146

### Re: Studying for Midterm #1

There is usually plenty of time to complete the problems. Our midterms had between 10-13 problems last quarter. Make sure your respondus is working before you attempt to take the midterm because that can be stressful.
Sat Jan 23, 2021 3:24 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework number six
Replies: 4
Views: 24

### Homework number six

On sapling problem number six I am having hard time identifying which are acidic, basic, or neutral. Can someone explain how you can tell?
Sat Jan 16, 2021 11:42 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework Problem #3 7
Replies: 3
Views: 12

### Homework Problem #3 7

At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.100 M and [NO]=0.600 M. N2(g)+O2(g)↽−−⇀2NO(g) If more NO is added, bringing its concentration to 0.900 M, what will the final concentration of NO be after equilibrium is re‑established? I've attempted this problem but I k...
Sat Jan 16, 2021 11:41 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Now we're making bad chemistry jokes because all the good ones Argon
Sat Jan 16, 2021 11:40 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What is the chemical formula for “banana”?
BaNa2
Wed Jan 13, 2021 1:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework problem 7
Replies: 4
Views: 33

### Homework problem 7

Consider this system at equilibrium. A(aq)↽−−⇀B(aq)ΔH=+550 kJ/mol What can be said about Q and K immediately after an increase in temperature? Q > K because K decreased. Q < K because K increased. Q > K because Q increased. Q < K because Q decreased. Q = K because neither changed. How will the syste...
Wed Jan 13, 2021 1:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework #5
Replies: 2
Views: 30

### Homework #5

Consider the reaction of NH3 and I2 to give N2 and HI. 2NH3(g)+3I2(g)↽−−⇀N2(g)+6HI(g)K Using two or more of the given equations, determine the equilibrium constant, K , for the reaction of NH3 with I2. H2(g)+I2(g)↽−−⇀2HI(g)I2(g)↽−−⇀2I(g)N2(g)+3H2(g)↽−−⇀2NH3(g)H2(g)+Cl2(g)↽−−⇀2HCl(g)Ka=160 Kb=2.1×10−...
Thu Jan 07, 2021 10:16 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What did one ion say to the other?

I've got my ion you.
Thu Jan 07, 2021 10:15 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What element is a girl's future best friend?
Carbon
Thu Jan 07, 2021 10:15 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What do you call a tooth in a glass of water?

One molar solution.
Thu Jan 07, 2021 10:14 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What did the scientist say when he found 2 isotopes of helium?
HeHe
Thu Jan 07, 2021 10:13 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Don't trust atoms, they make up everything.
Thu Jan 07, 2021 10:12 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework #3
Replies: 3
Views: 25

### Homework #3

At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3.

H2(g)+I2(g)↽−−⇀2HI(g)Kc=53.3

At this temperature, 0.300 mol H2 and 0.300 mol I2 were placed in a 1.00 L container to react. What concentration of HI is present at equilibrium?

Can someone explain this?
Tue Jan 05, 2021 11:04 am
Forum: Ideal Gases
Topic: Sapling Homework
Replies: 22
Views: 175

### Sapling Homework

I had Dr. Lavelle last quarter and used Sapling to complete homework, but when I try to access Sapling learning through the CCLE it says I need a new code. Is anyone else having this problem and know how to fix it?
Tue Dec 15, 2020 6:28 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Old chemists never die. They just stop reacting!
Tue Dec 15, 2020 6:28 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Wait, are all these jokes too basic for you? Because I see no reaction.
Tue Dec 15, 2020 6:28 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What do you call a clown in jail? A Silicon!
Tue Dec 15, 2020 6:27 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What did silver say to gold at the bar? "Au, get outta here!"
Tue Dec 15, 2020 6:27 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Why are chemists great for solving problems? Because they always have a solution!
Tue Dec 15, 2020 6:26 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What did one charged atom say to the other? I got my ion you!
Sun Dec 06, 2020 4:45 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

What do you do with a dead chemist?
Barium
Sun Dec 06, 2020 4:44 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Silver walks up to Gold in a bar and says, "AU, get outta here!"
Sun Dec 06, 2020 4:44 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Why do chemists like nitrates so much?
They're cheaper than day rates.
Sun Dec 06, 2020 4:44 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

How about the chemical workers… are they unionized?
Sun Dec 06, 2020 4:43 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Don't trust atoms, they make up everything.
Sun Nov 29, 2020 9:12 pm
Forum: Student Social/Study Group
Topic: Curve?
Replies: 50
Views: 1942

### Re: Curve?

Sun Nov 29, 2020 9:10 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling HW #17
Replies: 7
Views: 59

### Re: Sapling HW #17

Consider the different about of bonds carbon can have and if they can form a ring structures. As a hint the carbons may form a trigonal shape.
Sun Nov 29, 2020 9:08 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 226
Views: 36003

### Re: Final Jitters

The night before take some time to relax. There is no point trying to cram information in the last minute. I recommend taking this time to give your brain a rest and do something you enjoy and then get a good nights rest.
Sun Nov 29, 2020 9:07 pm
Forum: Student Social/Study Group
Topic: Final Format
Replies: 35
Views: 289

### Re: Final Format

They haven't mentioned how it will be proctored but they did say that it is during a specific time.
Sun Nov 29, 2020 9:06 pm
Forum: Student Social/Study Group
Topic: Studying for Final Exam
Replies: 57
Views: 372

### Re: Studying for Final Exam

A week before I am going to start reviewing the old material and then slowly work my way to the new material by doing the practice problems.
Sun Nov 29, 2020 9:05 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling HW #18
Replies: 6
Views: 55

### Re: Sapling HW #18

All of the structures are very similar, but differ in the number of carbons. Follow the octet rule and draw the Lewis structure with this.
Sun Nov 22, 2020 9:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: memorizing VSEPR models
Replies: 13
Views: 79

### Re: memorizing VSEPR models

I looked up diagrams online and look at those to try and memorize them.
Sun Nov 22, 2020 9:30 pm
Forum: Administrative Questions and Class Announcements
Topic: Extra Credit
Replies: 11
Views: 112

### Re: Extra Credit

I don't believe that extra credit will be offered.
Sun Nov 22, 2020 9:27 pm
Forum: Administrative Questions and Class Announcements
Topic: Thanksgiving
Replies: 26
Views: 176

### Re: Thanksgiving

I would assume that he would post a lecture since he posted one on Veterans.
Sun Nov 22, 2020 9:24 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 226
Views: 36003

### Re: Final Jitters

I always find it helpful to do some self care before an exam.
Fri Nov 20, 2020 12:37 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework
Replies: 2
Views: 38

### Homework

Identify the axial and equatorial atoms in the three‑dimensional structure.

How do you identify the axial atoms vs. the equatorial atoms in the 3-d structure.
Fri Nov 20, 2020 12:29 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework Question
Replies: 2
Views: 24

### Homework Question

What is the molecular shape of sulfite ion?
Can someone explain this?
Sun Nov 15, 2020 5:01 pm
Forum: Ionic & Covalent Bonds
Topic: Textbook Questions
Replies: 1
Views: 17

### Textbook Questions

Suggest, giving reasons, which substance in each of the following pairs is likely to have the higher normal melting point (Lewis structures may help your arguments): (a) HCl HCl or NaCl NaCl; (b) C 2 H 5 OC 2 H 5 (diethyl ether) or C 4 H 9 OH (butanol); (c) CHI 3 or CHF 3 ; (d) C 2 H 4 or CH 3 OH . ...
Sun Nov 15, 2020 5:00 pm
Forum: Ionic & Covalent Bonds
Topic: Textbook problem
Replies: 1
Views: 15

### Textbook problem

3F.3 For which of the following molecules will dipole–dipole interactions be important: (a) CH 4 ; (b) CH 3 Cl ; (c) CH 2 Cl 2 ; (d) CHCl 3 ; (e) CCl 4 ?

Can someone explain this?
Sun Nov 15, 2020 4:59 pm
Forum: Bond Lengths & Energies
Topic: Textbook question
Replies: 3
Views: 21

### Textbook question

3F.15 Explain the difference in the boiling points of AsF 3 ( 63 ) °C and AsF 5 ( − 53 ) °C.
Can someone explain this?
Thu Nov 12, 2020 4:13 pm
Forum: Ionic & Covalent Bonds
Topic: Textbook Problem 2.A.15
Replies: 2
Views: 15

### Textbook Problem 2.A.15

Can someone explain this problem?

Write the most likely charge for the ions formed by each of the following elements: (a) S; (b) Te; (c) Rb; (d) Ga; (e) Cd.
Thu Nov 12, 2020 11:37 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Textbook Problem 1.E.25
Replies: 7
Views: 73

### Textbook Problem 1.E.25

Can someone explain how to do this problem?

Give the notation for the valence-shell configuration (including the outermost d-electrons) of (a) the alkali metals; (b) Group 15 elements; (c) Group 5 transition metals; (d) the “coinage” metals (Cu, Ag, Au).
Wed Nov 11, 2020 12:51 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Textbook problem 1.D.13
Replies: 3
Views: 31

### Textbook problem 1.D.13

Can someone explain the answer to this?

How many values of ml are allowed for an electron in a 6d-subshell?
Wed Nov 11, 2020 12:03 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Homework Problem #3
Replies: 2
Views: 34

### Homework Problem #3

Can someone explain how to do this problem? The formulas of the bromate ion, BrO−3, and chlorate ion, ClO−3, are very similar. However, the formulas of the nitrate ion and phosphate ion contain different numbers of oxygen atoms. This is also true for the formulas of the nitrite ion and phosphite ion...
Sun Nov 08, 2020 4:45 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Want to hear a joke about nitrogen oxide? NO!
Sun Nov 08, 2020 4:44 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Anyone know any jokes about sodium? Na
Sun Nov 08, 2020 4:43 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Did you hear oxygen went on a date with potassium? It went OK!
Sun Nov 08, 2020 4:42 pm
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 93
Views: 49673

### Re: How to find my posts

At the top of the page their is an option to see all your posts and it will say how many times you've posted.
Sun Nov 08, 2020 4:40 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 226
Views: 36003

### Re: Final Jitters

Spacing my studying out over time always helps the most.
Sun Nov 08, 2020 4:39 pm
Forum: Administrative Questions and Class Announcements
Topic: Accessing the E-textbook [ENDORSED]
Replies: 106
Views: 7185

### Re: Accessing the E-textbook[ENDORSED]

I only purchased the online textbook and sapling for \$70. It was on Lavelles website.
Sun Nov 01, 2020 2:59 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Modules
Replies: 7
Views: 58

### Re: Chemistry Modules

As far as I know there aren't any more modules.
Sun Nov 01, 2020 2:57 pm
Forum: Student Social/Study Group
Replies: 2
Views: 52

No information has been given out about the midterm. You didn't miss anything!
Sun Nov 01, 2020 2:53 pm
Forum: Properties of Light
Topic: Is c always the speed of light?
Replies: 88
Views: 457

### Re: Is c always the speed of light?

I believe so since it is a constant.
Sun Nov 01, 2020 2:52 pm
Forum: Student Social/Study Group
Topic: Tips for Staying Focused
Replies: 52
Views: 527

### Re: Tips for Staying Focused

I put headphones on that are noise canceling and this helps a lot.
Sun Nov 01, 2020 2:46 pm
Forum: Student Social/Study Group
Topic: How to relax
Replies: 115
Views: 603

### Re: How to relax

I love to watch Netflix.
Sun Nov 01, 2020 2:46 pm
Forum: Administrative Questions and Class Announcements
Replies: 19
Views: 211

When do we find out our midterm grades?
Sun Oct 25, 2020 8:16 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Replies: 92
Views: 2110

I recommend doing all the textbook problems and practicing all the homework problems.
Sun Oct 25, 2020 8:10 pm
Forum: Administrative Questions and Class Announcements
Topic: Where can I buy a webcam for a reasonable price?
Replies: 60
Views: 1102

### Re: Where can I buy a webcam for a reasonable price?

Amazon
Sun Oct 25, 2020 3:11 pm
Forum: Molarity, Solutions, Dilutions
Topic: Textbook problem B.7
Replies: 1
Views: 39

### Textbook problem B.7

A student prepared a solution of sodium carbonate by adding 2.111 g of the solid to a 250.0-mL volumetric flask and adding water to the mark. Some of this solution was transferred to a buret. What volume of solution should the student transfer into a flask to obtain (a) 2.15 mmol Na + ; 2.15   mmol ...
Thu Oct 22, 2020 2:54 pm
Forum: Einstein Equation
Topic: Textbook problem B.7
Replies: 2
Views: 61

### Textbook problem B.7

Can someone explain how to do this? 1B.7 Sodium vapor lamps, used for public lighting, emit yellow light of wavelength 589 nm. How much energy is emitted by (a) an excited sodium atom when it generates a photon; (b) 5.00 mg of sodium atoms emitting light at this wavelength; (c) 1.00 mol of sodium at...
Thu Oct 22, 2020 1:16 pm
Forum: DeBroglie Equation
Topic: Sapling Homework
Replies: 2
Views: 58

### Sapling Homework

Can someone explain how to do this problem? As you may well know, placing metal objects inside a microwave oven can generate sparks. Two of your friends are arguing over the cause of the sparking, with one stating that the microwaves "herd" electrons into "pointy" areas of the me...
Thu Oct 15, 2020 4:53 pm
Forum: Photoelectric Effect
Topic: Defining eV
Replies: 5
Views: 68

### Re: Defining eV

The conversion is 1.602 x 10^-19 J.
Thu Oct 15, 2020 4:51 pm
Forum: Properties of Electrons
Topic: Midterm
Replies: 1
Views: 66

### Midterm

Will we be provided with certain formulas for the midterms?
Thu Oct 15, 2020 4:47 pm
Forum: Einstein Equation
Topic: Textbook Question 1A.3
Replies: 3
Views: 60

### Re: Textbook Question 1A.3

When you increase the wavelength, you decrease the slope of the wave. This means you change the waves extent of change.
Thu Oct 15, 2020 11:38 am
Forum: Administrative Questions and Class Announcements
Topic: Excellence in Chemistry Award!
Replies: 27
Views: 6950

### Re: Excellence in Chemistry Award!

Congrats!
Thu Oct 15, 2020 11:25 am
Forum: Photoelectric Effect
Topic: External Camera
Replies: 11
Views: 115

### External Camera

Is there a certain type of external camera we have to purchase for exams?
Sun Oct 11, 2020 11:41 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8545
Views: 1474653

### Re: Post All Chemistry Jokes Here

Don't trust atoms, they make up everything.
Sun Oct 11, 2020 11:39 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Step up Session [ENDORSED]
Replies: 3
Views: 173

### Step up Session[ENDORSED]

Where do you find the link for the step up sessions? Has there been a list sent out with all the different times?
Sun Oct 11, 2020 11:38 am
Forum: Significant Figures
Topic: Sig Figs
Replies: 4
Views: 36

### Sig Figs

Can someone explain Sig Figs?
Thu Oct 08, 2020 11:03 am
Forum: Molarity, Solutions, Dilutions
Topic: G5
Replies: 8
Views: 110

### Re: G5

I am also confused. After you find the molarity, what is the next step?