Search found 21 matches

by nanditasundarapandian1D
Sun Dec 10, 2017 12:16 am
Forum: Amphoteric Compounds
Topic: Determining Amphoteric Compounds
Replies: 3
Views: 272

Re: Determining Amphoteric Compounds

amphoteric is when it can react with acids and bases right?
by nanditasundarapandian1D
Wed Dec 06, 2017 5:37 pm
Forum: Conjugate Acids & Bases
Topic: HW 12.45
Replies: 4
Views: 238

HW 12.45

Arrange the following bases in order of increasing strength on the basis of the pKa values of their conjugate acids, which are given in parentheses: (a) ammonia (9.26); (b) methylamine (10.56); (c) ethylamine (10.81); (d) aniline (4.63) (see Exercise 12.44). Is there a simple pattern of strengths? I...
by nanditasundarapandian1D
Fri Dec 01, 2017 11:25 am
Forum: Hybridization
Topic: Do pi bonds only form with double/triple bonds?
Replies: 5
Views: 261

Re: Do pi bonds only form with double/triple bonds?

single bond = sigma bond

double bond = sigma + pi bonds

triple bond = sigma + 2pi bonds

so yes essentially pi bonds from double and triple bonds
by nanditasundarapandian1D
Fri Dec 01, 2017 11:24 am
Forum: Hybridization
Topic: Hybridization and lone pairs
Replies: 3
Views: 151

Re: Hybridization and lone pairs

Yes, because lone pairs would simply be another area of electron density.
by nanditasundarapandian1D
Fri Dec 01, 2017 11:23 am
Forum: Hybridization
Topic: Delocalized π bonds
Replies: 2
Views: 179

Re: Delocalized π bonds

it helps explains resonance
by nanditasundarapandian1D
Wed Nov 29, 2017 8:58 am
Forum: Ideal Gases
Topic: Kc to Kp Conversion
Replies: 5
Views: 329

Re: Kc to Kp Conversion

also concentration is n/v in the PV = nRT equation. That's why we are able to get a correlation between them.
by nanditasundarapandian1D
Wed Nov 29, 2017 8:57 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Le Chatelier's Principle
Replies: 4
Views: 196

Le Chatelier's Principle

Can someone explain how taking away heat affects the equilibrium reaction?
by nanditasundarapandian1D
Fri Nov 17, 2017 1:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 789146

Re: Post All Chemistry Jokes Here

Na: That was sodium funny

Ne: I slapped my neon that one
by nanditasundarapandian1D
Fri Nov 17, 2017 1:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 789146

Re: Post All Chemistry Jokes Here

What kind of dogs do chemists have?

laboratory dogs ;)
by nanditasundarapandian1D
Sat Nov 11, 2017 5:23 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty Principle [ENDORSED]
Replies: 5
Views: 285

Re: Uncertainty Principle [ENDORSED]

If it's +/- 4. its easier to write it out like this

(4+4)-(4-4)
by nanditasundarapandian1D
Sat Nov 11, 2017 5:21 pm
Forum: Octet Exceptions
Topic: Expanding an Octet [ENDORSED]
Replies: 2
Views: 168

Re: Expanding an Octet [ENDORSED]

It's not necessarily a rule but just as a guide that the more electronegative one will more likely hold the negative charge.
by nanditasundarapandian1D
Sun Nov 05, 2017 10:50 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Hund's Rule [ENDORSED]
Replies: 6
Views: 331

Re: Hund's Rule [ENDORSED]

Spins basically just shows which direction the electron is going in. Counter clockwise or clockwise.
by nanditasundarapandian1D
Sun Nov 05, 2017 10:48 am
Forum: Lewis Structures
Topic: 3.57
Replies: 2
Views: 119

Re: 3.57

We are supposed to look at the name and get an idea of the structure. Like we know that Hydrogen is most probably going to be on the outside and we can tell by the valence electrons what is going to be the central atom.
by nanditasundarapandian1D
Sat Oct 28, 2017 12:46 pm
Forum: DeBroglie Equation
Topic: When to use De Broglie Equation [ENDORSED]
Replies: 11
Views: 861

Re: When to use De Broglie Equation [ENDORSED]

De Broglie's Equation is used to get a direct relationship between wavelength and momentum.
by nanditasundarapandian1D
Sat Oct 21, 2017 10:17 pm
Forum: DeBroglie Equation
Topic: λ=c/v VS. λ=h/mv
Replies: 9
Views: 821

Re: λ=c/v VS. λ=h/mv

DeBroglie's equation is used because it is the only equation that is a direct link between wavelength and momentum.
by nanditasundarapandian1D
Sat Oct 21, 2017 10:07 pm
Forum: Properties of Light
Topic: Photoelectric Effect Post-module Question
Replies: 2
Views: 403

Re: Photoelectric Effect Post-module Question

Light hits a sodium metal surface and the velocity of the ejected electron is 6.61 x 105 m.s-1. The work function for sodium is 150.6 kJ.mol-1. What is the frequency of the incident light on the metal surface? E(photon) = work function + Kinetic Energy h * frq = work function + (1/2)(mass)(velocity)^2
by nanditasundarapandian1D
Fri Oct 13, 2017 8:17 pm
Forum: Properties of Light
Topic: Prefix Conversion
Replies: 12
Views: 438

Re: Prefix Conversion

I think it just depends on the specific problem and your preference!
by nanditasundarapandian1D
Fri Oct 13, 2017 8:00 pm
Forum: Photoelectric Effect
Topic: Confused about photoelectric effect! [ENDORSED]
Replies: 6
Views: 327

Re: Confused about photoelectric effect! [ENDORSED]

Hi! The photoelectric effect simply explains that light acts as a particle not as a wave. In a wave the higher the intensity the more energy was released. But this experiment instead showed that changing the intensity did not make a difference but instead the frequency had to be different. Light is ...
by nanditasundarapandian1D
Fri Oct 06, 2017 1:21 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reacant Problems made easy
Replies: 2
Views: 184

Re: Limiting Reacant Problems made easy

its also helpful to find a sample product by assuming that each reactant is the limiting reactant. the product that comes out to be the smallest will show which one is the limiting reactant!
by nanditasundarapandian1D
Fri Oct 06, 2017 1:18 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Coefficients [ENDORSED]
Replies: 12
Views: 640

Re: Empirical Coefficients [ENDORSED]

From what I learned you round up when its bigger than .5 and round down when its smaller than .5

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