sgeos
 Name:
 Brendan A Sechter
 School:
 Self Learner
 About:
 I figured I would try studying MIT OpenCourseWare. I am currently studying 3.091SC Solid State Chemistry.
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 Questions Asked
 14
 Questions Answered
 64
 Medals Received
 23

 Questions Asked
 5
 Questions Answered
 3
 Medals Received
 2

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 1
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 Medals Received
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 Questions Asked
 13
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 7
 Medals Received
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Questions Asked

sgeos:
Group Title
If a sealed container of anhydrous ammonia (60 atm, 0 Celsius) is opened in a 25 degree Celsius room (1 atm), what temperate will the ammon…
 updated 3 years ago
 No Medals Yet
Mathematics

sgeos:
Group Title
\[\text{Posting an entire question in equation format currently displays properly in}\]\[\text{the preview, but it does not display correct…
 updated 3 years ago
 5 replies
 1 Medal
Mathematics

sgeos:
Group Title
Is there a good way to intuitively keep track of oxidation, reduction, oxidants and reductants? Is this something that comes with experien…
 updated 3 years ago
 3 replies
 4 Medals
Mathematics

sgeos:
Group Title
I'm trying to wrap my head around the workings of the salt bridge used in a Galvanic cell. The salt is gelified so it does not fall into t…
 updated 3 years ago
 4 replies
 No Medals Yet
Mathematics

sgeos:
Group Title
Given the length of a line (d) and an angle (θ), sin and cos can be used to extract the x and y components of the line.
\[d_{component}=d*\…
 updated 3 years ago
 2 replies
 1 Medal
Mathematics

sgeos:
Group Title
I was supposed to arrange some species in order of increasing polarizability. I used the estimated atomic radius without checking, and thi…
 updated 3 years ago
 3 replies
 1 Medal
Mathematics

sgeos:
Group Title
Lecture #12 homework check. Same drill. I want to swap answers for the questions that are not at the end of the book to see if I messed u…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
Lecture #11 homework check. Same drill. I want to swap answers for the questions that are not at the end of the book to see if I messed u…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
\[\text{Is this the correct promotion and bonding sequence for }CH^+_3?\]
\[C^+\space \underset{s}{\fbox{↑↓}}\space\underset{p}{\fbox{↑ }\f…
 updated 3 months ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
Lecture #10 homework check. Most of the textbook questions do not have answers in the back of the book, so I want to check my answers agai…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
Why are some people's names in green?
 updated 3 years ago
 5 replies
 2 Medals
Mathematics

sgeos:
Group Title
Lecture #9 homework check. Yet again, most of the textbook questions do not have answers in the back of the book. Yet again, I want to ch…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
\[\text{Why do the }Ti^{4+}\text{ and }Fe^{2+}\text{ ions in }Al_2O_3 \text{ make sapphire blue?}\]http://www.geolite.com/blue_sapphire.htm
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
\[\text{Why do the }Ti^{4+}\text{ and }Fe^{2+}\text{ ions in }Al_2O_3 \text{ make sapphire blue?}\]http://www.geolite.com/blue_sapphire.htm
 updated 3 years ago
 2 replies
 1 Medal
Mathematics

sgeos:
Group Title
How does hypervalency (expanded octet) affect the stability of a molecule?
This was a question I had a hard time answering. All I could s…
 updated 3 years ago
 4 replies
 No Medals Yet
Mathematics

sgeos:
Group Title
The Lewis package is not installed. It would be nice to have.
http://kambing.ui.ac.id/ctan/macros/latex/contrib/lewis/lewis.pdf
 updated 3 years ago
 No Medals Yet
Mathematics

sgeos:
Group Title
Lecture #8 homework check. Most of A&E chapter 8 problems do not have answers in the back of the book, so I would like to swap answers for…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
I just did a homework problem that uses a version of Pauling's electronegativity equation which is valid for bond energies given in kJ.\[(\…
 updated 3 years ago
 2 replies
 No Medals Yet
Mathematics

sgeos:
Group Title
In the homework for lecture #8, Problem #7, a version of Pauling's electronegativity equation is used that is valid for bond energies given…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
SelfAssessment: Structure of the Atom PostMortem. First of all, I basically got Test #1, Problem #4 correct, but in the help session vid…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
My algebra is a little rusty. Given the following equation:\[\tilde{\nu}=\frac{1}{\lambda}=R\bigg(\frac{Z^2}{n^2_i}\frac{Z^2}{n^2_i}\bigg…
 updated 3 years ago
 13 replies
 1 Medal
Mathematics

sgeos:
Group Title
I want to solve an equation for wavelength, but my algebra is a little rusty. Given the following equation:\[\tilde{\nu}=\frac{1}{\lambda}…
 updated 3 years ago
 3 replies
 No Medals Yet
Mathematics

sgeos:
Group Title
Lecture #7 homework check. None of the questions have answers in the back of the book, so I would like to swap answers. (A&E Chapter 8, p…
 updated 3 years ago
 3 replies
 No Medals Yet
Mathematics

sgeos:
Group Title
A number of factors contribute to the stability of ionic compounds. Describe one type of interaction that destabilizes ionic compounds. D…
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
Suppose you want to synthesize a solid that is both heat resistant and a good electrical conductor. What specific types of bonding and mol…
 updated 3 years ago
 9 replies
 1 Medal
Mathematics

sgeos:
Group Title
Formula builder is missing inputs for things like the Ångström and reduced Planck constant. Also no input for fractions.
Å = Unicode Char…
 updated 3 years ago
 No Medals Yet
Mathematics

sgeos:
Group Title
Since you are incorporating aspects of social gaming into OpenStudy, leader boards seem like the logical next thing add. Play around with …
 updated 3 years ago
 1 reply
 No Medals Yet
Mathematics

sgeos:
Group Title
Is there an easy way to keep track of the possible oxidation states of the transition metals?
 updated 3 years ago
 4 replies
 1 Medal
Mathematics

sgeos:
Group Title
I want to make sure I understand the relationship between the enthalpy of fusion and the melting point of a substance. So far as I can tel…
 updated 3 years ago
 2 replies
 No Medals Yet
Mathematics

sgeos:
Group Title
Can anyone recommend a good introductory electrometallurgy textbook?
I'm currently working through Chemistry Principles, Patterns, and App…
 updated 3 years ago
 3 replies
 1 Medal
Mathematics
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