## Search found 6 matches

Sun Jan 24, 2016 11:17 pm
Forum: Calculating Work of Expansion
Topic: Irreversible vs. Reversible Expansion - HW 8.11
Replies: 2
Views: 439

### Re: Irreversible vs. Reversible Expansion - HW 8.11

You know which equation to use because the irreversible path uses $w=-P_{ex}\Delta V$ while a reversible isothermal expansion calls for the $w=-nRTln(V_{final}/V_{initial})$ equation. The problem will tell you which one it is asking for
Sun Jan 17, 2016 11:43 pm
Forum: Phase Changes & Related Calculations
Topic: Steam Burns vs. Water Burns
Replies: 6
Views: 3246

### Re: Steam Burns vs. Water Burns

Steam has more energy than boiling water because it takes more energy to break the bonds holding the molecules together. Because of this, the temperature stays at 100 degrees Celsius, even as more heat is added.
Mon Oct 26, 2015 5:35 pm
Forum: Lewis Structures
Topic: Lewis Structure for CH2
Replies: 1
Views: 3888

### Re: Lewis Structure for CH2

I put the lone pair on the Carbon, making the shape bent
Mon Oct 26, 2015 5:30 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Question 3 on graded quiz from Green Workbook
Replies: 1
Views: 370

### Question 3 on graded quiz from Green Workbook

Did anyone get the right answer for number three on the practice quiz in the green workbook? It's the quiz that counts towards your grade, I got it wrong but I want to know what the right answer was so I can go over my mistake for the midterm.
Mon Oct 26, 2015 5:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Shapes of AX2E and AX2E2
Replies: 1
Views: 656

### Re: VSEPR Shapes of AX2E and AX2E2

From what my TA told me, Bent and Angular are interchangeable names for the shape.
Sun Oct 11, 2015 12:58 am
Forum: Properties of Light
Topic: Units in wavelength and frequency problems
Replies: 1
Views: 432

### Units in wavelength and frequency problems

When using the wavelength = speed of light/ frequency equation, how do the meters per second from the speed of light cancel out with the Hz from the frequency on the bottom? I've just been trusting that somehow I'll end up with the frequency in meters.