Search found 12 matches

by 704629866
Sun Mar 06, 2016 12:56 pm
Forum: *Alkanes
Topic: Priority of Subsituents
Replies: 3
Views: 356

Priority of Subsituents

If an element other than C or H is a substituent, does that element have priority?
by 704629866
Fri Feb 26, 2016 12:44 pm
Forum: *Alkanes
Topic: Substituent -yl ending
Replies: 2
Views: 328

Substituent -yl ending

Does the -yl ending for a substituent only apply to hydrocarbons?
by 704629866
Sun Feb 14, 2016 12:10 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation energy?
Replies: 1
Views: 324

Re: Activation energy?

The quiz only covers material up to the end of section 15.10.
by 704629866
Tue Jan 19, 2016 11:57 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Problem 8.27
Replies: 2
Views: 338

Re: Problem 8.27

The equation is w=-nRTln(V2/V1).
Check out page 266 in the textbook.
by 704629866
Sat Dec 05, 2015 8:00 pm
Forum: *Titrations & Titration Calculations
Topic: Acids and bases
Replies: 1
Views: 342

Re: Acids and bases

CH3COOH is a weak acid. It is one of the carboxylic acids and those are weak. Carboxylic acids have -COOH
by 704629866
Fri Dec 04, 2015 9:30 pm
Forum: Photoelectric Effect
Topic: 2 on Fall 2008 Final
Replies: 1
Views: 397

Re: 2 on Fall 2008 Final

It is derived from Lambda=h/p.
p is mass x velocity, so you get Lambda=h/(mass x velocity). From here it's using algebra to get velocity by itself, and you end up with v=h/(mass x lambda).
by 704629866
Sun Nov 15, 2015 7:25 pm
Forum: Naming
Topic: adding Fe metal name
Replies: 2
Views: 458

Re: adding Fe metal name

I don't know if this will help much, but with a negative coordination sphere you have to use the -ate ending as with k4[Fe[CN06] pottasiumhexacyanoferrate(II)
by 704629866
Fri Nov 06, 2015 4:25 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: MOT
Replies: 2
Views: 475


The Lewis structure faces limitations when determining if a substance is diamagnetic or paramagnetic, because it does not show if there are lone electrons, as with O2.The textbook has a good section, "4.8 The Limitations of Lewis's Theory" where they discuss this, and the limitations that ...
by 704629866
Sat Oct 31, 2015 1:16 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Dissociation Energy
Replies: 2
Views: 533

Dissociation Energy

How do you determine dissociation energy?
by 704629866
Sun Oct 25, 2015 8:30 pm
Forum: Bond Lengths & Energies
Topic: Lone Pairs Affect on Bond Strength
Replies: 1
Views: 2924

Lone Pairs Affect on Bond Strength

Why do lone pairs on neighboring atoms weaken the bond?
by 704629866
Sat Oct 10, 2015 12:44 pm
Forum: Einstein Equation
Topic: Value of Planck's Constant
Replies: 1
Views: 422

Value of Planck's Constant

Why are there two values for Planck's Constant? In the worked examples following the photoelectric effect the value for h is 6.626x10^-34 j.s., but for Heisenberg's indeterminacy equation h is 6.63x10^-34 j.s.? Are the two h's different?
by 704629866
Sun Oct 04, 2015 10:06 pm
Forum: DeBroglie Equation
Topic: Measurable Wavelike
Replies: 1
Views: 498

Re: Measurable Wavelike

10^-15 is the detection limit.

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