## Search found 16 matches

Sun Oct 30, 2016 7:22 pm
Forum: Trends in The Periodic Table
Topic: Quiz 2 Question 1 Wording [ENDORSED]
Replies: 5
Views: 537

### Re: Quiz 2 Question 1 Wording[ENDORSED]

Okay thank you!
Sun Oct 30, 2016 7:21 pm
Forum: Electronegativity
Topic: Quiz 2 Question 1
Replies: 2
Views: 335

### Re: Quiz 2 Question 1

Yes this one was without the solutions, I handed in my workbook so I don't know the exact question but I remember we had to compare the electronegativity of multiple compounds, and I didn't know how to go about an element with a subscript, as in H2S.
Thu Oct 27, 2016 10:17 am
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge for Indivual Elements in Compound
Replies: 2
Views: 577

### Formal Charge for Indivual Elements in Compound

So when the overall sum of formal charges is equal to zero but individual elements have say a -1 or a +1 or in some way balance eachother out, how do I determine which element should have what charge?
Thu Oct 27, 2016 10:13 am
Forum: Electronegativity
Topic: Quiz 2 Question 1
Replies: 2
Views: 335

### Quiz 2 Question 1

Ok so one of the compounds we're being asked to compare is H2S. In order to determine its electronegativity I'm assuming I'd have to double Hydrogens electronegativity, but I don't know that value. Will we be given the value? If not how would I approach that.
Wed Oct 26, 2016 11:52 pm
Forum: Trends in The Periodic Table
Topic: Quiz 2 Question 1 Wording [ENDORSED]
Replies: 5
Views: 537

### Re: Quiz 2 Question 1 Wording[ENDORSED]

Oh i had it all wrong omg thankyou now i remember. so do i have to know the exact values of electronegativity and compare or can i determine which is greater through the trend
Wed Oct 26, 2016 11:33 pm
Forum: Trends in The Periodic Table
Topic: Quiz 2 Question 1 Wording [ENDORSED]
Replies: 5
Views: 537

### Quiz 2 Question 1 Wording[ENDORSED]

So it says circle the compound with greater "ionic character"
And my notes have trends for both ionic radii and ionization energy.
which trend does ionic character refer to? or how do i figure that out
Wed Oct 26, 2016 11:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 39
Views: 21013

### Re: Tutoring?[ENDORSED]

Ok it is helpful thankyou very much!
Wed Oct 26, 2016 4:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 39
Views: 21013

### Tutoring?[ENDORSED]

Where could I find the contact of a chem tutor?
Thu Oct 13, 2016 1:26 am
Forum: Molarity, Solutions, Dilutions
Topic: Workbook Page 11 Number 5
Replies: 2
Views: 401

### Workbook Page 11 Number 5

Given is Copper(II)Sulfate . 5water I'd type out the formula but I'm not sure how to do subscripts My first question is why there is a period between copper(II)sulfate and water, I don't know what to make of it or if its just a typo? The rest of the problem is determine the mass of Copper(II)Sulfate...
Thu Oct 13, 2016 1:14 am
Forum: Photoelectric Effect
Topic: Question Wording on Photoelectric Effect
Replies: 4
Views: 562

### Re: Question Wording on Photoelectric Effect

Okay that helps thank you!
Wed Oct 12, 2016 10:38 pm
Forum: Photoelectric Effect
Topic: Question Wording on Photoelectric Effect
Replies: 4
Views: 562

### Question Wording on Photoelectric Effect

The question I'm stuck on asks for the lowest frequency of light that will cause photoelectric emission, and then the maximum energy of the electrons emitted. The wording is confusing me, does this involve an inequality?
Wed Oct 12, 2016 12:50 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Quiz 1 prep #5 question [ENDORSED]
Replies: 7
Views: 863

### Re: Quiz 1 prep #5 question[ENDORSED]

Marco_Romo_1I wrote:Yes that is correct. So delta P is 4.02 X 0.2.

Where does the 4.02 come from?
Tue Oct 11, 2016 11:52 pm
Forum: SI Units, Unit Conversions
Topic: Quiz 1 number 3
Replies: 2
Views: 442

### Re: Quiz 1 number 3

Okay Thankyou!
Tue Oct 11, 2016 10:20 pm
Forum: SI Units, Unit Conversions
Topic: Quiz 1 number 3
Replies: 2
Views: 442

### Quiz 1 number 3

Hi, for #3 I converted megahertz to hertz for the given energy amount, and I was going to use E=hv and then c= lambda v
But h= 6.626 x 10^-34 J/s
And my energy is 9.95 x 10^7 Hz
My point is they're different units
Can I still find v in E= hv?
Or do I need to do some kind of conversion
Tue Oct 11, 2016 8:49 pm
Forum: Student Social/Study Group
Topic: Hedrick Hall
Replies: 3
Views: 743

### Hedrick Hall

Would anyone in Hedrick Hall like to study tonight?
Wed Sep 28, 2016 10:44 pm
Forum: Balancing Chemical Reactions
Topic: Balancing Equations Video [ENDORSED]
Replies: 1
Views: 411

### Balancing Equations Video[ENDORSED]

My Highschool chemistry teacher taught us to balance this way, its the lengthy method but I prefer it to trying to balance in my head. https://video.search.yahoo.com/yhs/search;_ylt=AwrTccttqexXinYAC1APxQt.?p=balancing+equations&fr=yhs-Lkry-SF01&fr2=piv-web&hspart=Lkry&hsimp=yhs-SF01...