## Search found 16 matches

Sun Oct 29, 2017 11:15 pm
Forum: DeBroglie Equation
Topic: units for mass
Replies: 6
Views: 517

### Re: units for mass

what are the unit conversions for kilojoules (K.J) in meters per second?
Sun Oct 29, 2017 11:13 pm
Forum: Photoelectric Effect
Topic: Velocity
Replies: 2
Views: 240

### Velocity

When you are looking for velocity in a problem which problem would you use since I know none of them specifically include velocity?
Sun Oct 15, 2017 11:17 pm
Forum: Empirical & Molecular Formulas
Topic: Theoretical yield [ENDORSED]
Replies: 1
Views: 237

### Theoretical yield[ENDORSED]

After finding the empirical formula the module stops, so how do I get from the empirical formula to the theoretical yield in order to find the actual yield?
Sun Oct 15, 2017 11:15 pm
Forum: Significant Figures
Topic: no Sig Figs in question [ENDORSED]
Replies: 4
Views: 529

### no Sig Figs in question[ENDORSED]

If the question has no numerical values present, would you use the significant figures of the constants we should use or what should you do?
Sun Oct 08, 2017 6:58 pm
Forum: Empirical & Molecular Formulas
Topic: F.23 Question [ENDORSED]
Replies: 5
Views: 574

### Re: F.23 Question[ENDORSED]

say a problem asked you to find the mass percentage composition and another problem asked you to find the moles of a certain mass. would the process ultimately be the same? You just multiply by 100 when finding the percent composition
Sun Oct 08, 2017 6:34 pm
Forum: Molarity, Solutions, Dilutions
Topic: Molarity and Dilution [ENDORSED]
Replies: 7
Views: 1388

### Re: Molarity and Dilution[ENDORSED]

I have a hard time identifying what is what in wordy questions. For instance I often mix up what is the Molarity, number of moles of solute, or the volume. And I have a hard time with excluding unnecessary givens in the equation. Does anyone have any advice?
Sun Jul 09, 2017 10:38 pm
Forum: Lewis Structures
Topic: Determining Lewis structures
Replies: 4
Views: 640

### Re: Determining Lewis structures

when drawing a lewis structure how do you determine where to place the lone pair if there is one
Sun Jul 09, 2017 10:36 pm
Forum: Resonance Structures
Topic: Resonance vs. Lewis Structure?
Replies: 9
Views: 1232

### Re: Resonance vs. Lewis Structure?

I'm always confused on how to draw the different resonance structures.. does it matter how you move the double bonds around if it has the same arrangements of atoms
Sun Jul 09, 2017 10:32 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration for Fe 3+
Replies: 6
Views: 37325

### Re: Electron Configuration for Fe 3+

on exams will we be required to find the ground state electron configuration using the noble gas notation? or will it require us to just write the general electron configuration
Sun Jul 09, 2017 10:24 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: orbitals an shells [ENDORSED]
Replies: 5
Views: 599

### orbitals an shells[ENDORSED]

Can someone pease clarify the relationship between shells and orbitals?
Sun Jul 02, 2017 10:51 pm
Forum: Balancing Chemical Reactions
Topic: Order of steps
Replies: 6
Views: 661

### Re: Order of steps

Sun Jul 02, 2017 10:42 pm
Forum: Properties of Light
Topic: Amplitude versus wavelength
Replies: 4
Views: 408

### Re: Amplitude versus wavelength

when it comes to light, why is amplitude not proportional to energy?
Sun Jul 02, 2017 10:27 pm
Forum: DeBroglie Equation
Topic: verified/detected wavelengths
Replies: 2
Views: 406

### verified/detected wavelengths

a wavelength is hard to detect when smaller than 10^-10 correct? Why this specific value and what the reasoning behind it?
Sun Jul 02, 2017 10:13 pm
Forum: SI Units, Unit Conversions
Topic: Molar Mass
Replies: 7
Views: 985

### Re: Molar Mass

from what I know the molecular weight and molar mass have the same numbers but have different units. The molecular weight is in amu and the molar mass is in grams per mole...im not sure how to explain in detail the reasoning behind this, I hope someone else is able to.
Sun Jul 02, 2017 9:57 pm
Forum: SI Units, Unit Conversions
Topic: Exercise E1 [ENDORSED]
Replies: 6
Views: 935

### Re: Exercise E1[ENDORSED]

I was a bit confused on this question as well (Im really rusty when it comes to chem)...how do you know to multiply by 2? when its not specified in the problem
Sun Oct 02, 2016 9:06 pm
Forum: Molarity, Solutions, Dilutions
Topic: Homework problem Fundamentals E.15
Replies: 3
Views: 423

### Homework problem Fundamentals E.15

Im sure I am very rusty with Chemistry. The question is asking for the molar mass of the sulfide of the metal hydroxide and I am not understanding how to even go about the problem. Please explain...