## Search found 7 matches

Sun Nov 27, 2016 8:31 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8204
Views: 1432710

### Re: Post All Chemistry Jokes Here

The name's Bond. Ionic bond. Taken, not shared.
Sun Nov 20, 2016 6:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8204
Views: 1432710

### Re: Post All Chemistry Jokes Here

Two man walked into a bar, the first ordered ome H2O. The second said "sounds good, I'll have some H2O too."

He died.
Fri Oct 21, 2016 12:33 am
Forum: Electronegativity
Topic: Difference between electron affinity and electronegativity
Replies: 3
Views: 1311

### Difference between electron affinity and electronegativity

Can anyone help explain the difference between electron affinity and electronegativity?
I'm kind of confuse about the two concepts and the trend of each.
Thanks a lot!
Sat Oct 15, 2016 11:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8204
Views: 1432710

### Re: Post All Chemistry Jokes Here

here's the fun one
Thu Oct 06, 2016 8:16 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Question about HW1.45 and how to determine the incertainty of velocity [ENDORSED]
Replies: 1
Views: 363

### Question about HW1.45 and how to determine the incertainty of velocity[ENDORSED]

1.45 A bowling ball of mass 8.00 kg is rolled down a bowling alley lane at 5.00+/-5.0m/s. What's the minimum uncertainty in its positon? The student solution manual take 5m/s as the delta v. I feel confused because based on what i learned from the video, the delta v in this question should be double...
Sun Oct 02, 2016 3:26 pm
Forum: Properties of Light
Topic: Quantum World - Light
Replies: 1
Views: 563

### Re: Quantum World - Light

Etotal=W=p*t=40w*2.0s=80J
Ephoton=hc/λ
number of photon=Etotal/Ephoton
n(amount in mole)=number of photon/Avogado's constant