## Search found 16 matches

Mon Mar 07, 2016 10:14 am
Forum: *Alkanes
Topic: Naming in General
Replies: 2
Views: 393

### Re: Naming in General

To add to this, "iso" and "neo" should be included when alphabetizing, while "sec" and "tert" are not.
Mon Feb 29, 2016 12:39 pm
Forum: *Alkenes
Topic: Naming
Replies: 1
Views: 278

### Naming

In naming compounds, which takes priority for the lowest number: a double bond or a functional group?
Mon Feb 22, 2016 12:02 pm
Forum: *Alkanes
Topic: Drawing line structures
Replies: 1
Views: 270

### Drawing line structures

On a quiz or the final, is it acceptable to leave out the hydrogens when drawing line structures?
Mon Feb 15, 2016 5:31 pm
Forum: Zero Order Reactions
Topic: Rate constant
Replies: 3
Views: 444

### Re: Rate constant

If given the initial concentration at t=0, then you can calculate k by using the equation $[A]=-kt +[A]_{0}$

Otherwise, you can calculate k by plotting the concentrations you have vs time and determining the negative of the slope as the equation shows.
Mon Feb 08, 2016 11:59 am
Forum: General Rate Laws
Topic: Rate Laws
Replies: 1
Views: 269

### Rate Laws

Are liquid and solid reactants excluded in the rate law?
Mon Feb 01, 2016 11:24 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Positive/Negative Voltage
Replies: 1
Views: 276

### Positive/Negative Voltage

On a quiz or exam, would a negative voltage be acceptable? Or should it always be positive since that would be the favorable reaction?
Mon Jan 25, 2016 12:11 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Extensive V. Intensive
Replies: 2
Views: 470

### Re: Extensive V. Intensive

An extensive property is a property that depends on the size of the sample. Heat capacity is an example of an extensive property since heat required depends on the amount of substance you have. On the other hand, an intensive property doesn't change regardless of the sample size. For example, if you...
Thu Jan 21, 2016 4:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7831
Views: 1087713

### Re: Chemistry Jokes

Wed Jan 13, 2016 4:28 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Comparing Molar Heat Capacity
Replies: 1
Views: 239

### Re: Comparing Molar Heat Capacity

NO2 has more atoms in the molecule compared to NO, and thus a higher molecular complexity. Heat capacity increases with molecular complexity. This is because there are additional vibrational modes within more complex molecules, allowing more heat to be absorbed.
Wed Jan 06, 2016 5:26 pm
Forum: Phase Changes & Related Calculations
Topic: Phase Changes
Replies: 2
Views: 395

### Phase Changes

From my understanding, the phase change from water to steam requires more heat than the phase change from ice to water. How would this difference be represented in a heating curve?
Tue Nov 24, 2015 9:55 pm
Forum: Naming
Topic: VIDEO: Naming Coordination Compounds
Replies: 1
Views: 306

### VIDEO: Naming Coordination Compounds

Submission by: Lanzel Patawaran 304630292, Discussion 3B
Sun Oct 18, 2015 4:08 pm
Forum: Lewis Structures
Topic: Homework 3.97
Replies: 2
Views: 402

### Re: Homework 3.97

The atom with the lowest ionization energy/electronegativity goes in the middle of the structure. In P4, all the atoms have the same ionization energy/electronegativity, so there is no tendency for one atom to be the central atom.
Sun Oct 18, 2015 3:55 pm
Forum: Resonance Structures
Topic: Electron Heteronuclear Covalent Bond
Replies: 1
Views: 280

### Re: Electron Heteronuclear Covalent Bond

Electron heteronuclear covalent bonds are covalent bonds between two different types of atoms. For example, O2 is not heteronuclear because it contains two of the same atoms, whereas CO is heteronuclear because it contains two different atoms.
Sun Oct 11, 2015 10:59 pm
Forum: Quantum Numbers and The H-Atom
Topic: Chapter 2, Problem #29
Replies: 1
Views: 320

### Re: Chapter 2, Problem #29

First of all, these are the values that the quantum numbers can take: n: any positive integer l: n-1 m(l): -l < m(l) < 1 -l \leq m_{l} \leq l m(s): -1/2 or 1/2 For part b, you are already given n, l, and m(l). This means that m(s) can either be -1/2 or 1/2. So, only 2 electrons can have the quantum ...
Sun Oct 11, 2015 10:50 pm
Forum: Quantum Numbers and The H-Atom
Topic: Shielding of Electrons?
Replies: 1
Views: 318

### Re: Shielding of Electrons?

Orbitals with higher l values are NOT better at shielding than orbitals with lower l values. Since the electrons in atoms with lower l values are on average closer to the nucleus (like the s orbital compared to the p orbital), they cancel out the positive charge of the nucleus, making the effective ...
Sun Oct 04, 2015 3:11 pm
Forum: Einstein Equation
Topic: HW 1.27
Replies: 1
Views: 365

### Re: HW 1.27

The energy of light for a single photon is E=hv, where h is planck's constant and v is the frequency of the light/photon. Since power is how much energy is transferred per second, the power must be proportional to the number of photons emitted per second, n. Since each of these photons has an energy...

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