Search found 16 matches
- Sun Oct 29, 2017 11:15 pm
- Forum: DeBroglie Equation
- Topic: units for mass
- Replies: 6
- Views: 973
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: 459
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: 524
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: 856
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: 1164
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: 2153
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: 990
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: 2307
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: 5
- Views: 46544
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: 1129
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: 1064
Re: Order of steps
Start with the element that occurs the least
- Sun Jul 02, 2017 10:42 pm
- Forum: Properties of Light
- Topic: Amplitude versus wavelength
- Replies: 4
- Views: 714
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: 671
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: 1602
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: 1319
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: 764
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...