#chemistry folk of the fediverse, does anyone have tips for cleaning well plates efficiently? We do a lot of microchemistry in this unit and cleaning these well plates is killing me.

#askfedi

#chemistry people:

We're working on pH and acid base equilibria in one of my classes. If I had them do a lab where they prepare two solutions - acetic + ammonium hydroxide - at known concentrations, measure pH, and then calculate Ka/Kb, are there other extensions that would make it more rigorous?

We have not done buffers or weak titrations yet - I'm slowly working my way there.

#askfedi #teaching

#AskFedi

I would appreciate your help in chiming in about examples of independent journalists with successful blogs/newsletters who are NOT on Substack. (I will give you credit in my blog post.)

Examples that come to mind:

On GHOST
- https://www.404media.co
- https://www.citationneeded.news
- https://www.levernews.com
- https://www.platformer.news

On BEEHIIV
- https://www.garbageday.email
- Oliver Darcy's https://www.status.news
- New: Kat Tenbarge's https://spitfirenews.com

Anything else? Thanks! 🙏

(3/3)

Ok, I'm going down this road.

Without using Docker, what's the recommended way to get set up for local PHP development these days for a LAMP app? I used to use Vagrant/MAMP, but I'm sure there are new ways.

#askfedi #webdev

Our library now offers daily NY Times access through a gift link. Can that link be opened in the Times app for access? Or does it have to go through a browser?

#askfedi

I have been beating my head on trying to get Flask-SocketIO to work with an existing #flask app and accept connections from a third-party origin.

I get 400 errors because the socket closes before a connection can be made. I've disabled CORS (local-only network) and have double checked that every library is compatible. Serving a websocket route from the app works, but it will not other hosts.

Anyone with experience able to take a look at a repo or offer insight?

#python #askfedi #webdev

Do any #chemistry teachers have an equilibrium constant lab that does _not_ use iron and thiocyanate? I've been looking and looking, but I cannot find any other examples of lab procedures.

#teaching #askfedi

In creating this year's new #webdev class, I started created markdown documents with instructions and information for each project or concept. I want to turn those into some kind of website that's easier to use for students.

I had used #grav years ago (it's a flat-file CMS) and thought it was okay. Are there other flat file CMSs people like so I can take my directories and start from there rather than reorganizing for a build system?

#askfedi

I'm starting to prep unit materials for CSS grid for first year #webdev students (15-17 years old, HS course).

Anyone have favorite grid resources besides the standard three-column layout? We did a lot of that with flexbox and I'd like to contrast with other implementations.

We're going to start with a simple single column with full-bleed images to talk about grid area positioning. Other cool examples would be nice to have.

#askfedi

Planning some upcoming units for advanced #chemistry. Are Spec 20's still used in college labs? I've got some here that I'd like to have them use, but I'm not sure if that's my old brain thinking I need to do it or if it's still a good skill to expose.

#askfedi

Curious what others think:

Miniflux has an option to share a link to an article in my feed. Instead of linking to the source, it links to a special URL that's public to my reader. Other RSS readers, like TinyTiny RSS do something similar.

It feels a little like hijacking a page view...? I'm not commenting or adding a note, it's really just a view of the article through my portal. Is there a norm for this kind of link sharing?

#askfedi #rss

I don't have a Raspberry Pi 5 yet, but I'm really curious about its potential as a media center. Has anyone experimented with using the Pi 5 for 4K streaming, light retro gaming, or other applications? I'd love to hear your experiences!

#RaspberryPi5 #MediaCenter #TechDIY #CommunityTech #askfedi

I could use some ideas on what the next #webdev project should be. These are first year students who have done HTML and CSS since August and have been building some apps recently using JS:

- Product search page (filtering arrays, manipulating the DOM
- Rock/paper/scissors (randomness, conditionals)
- Basic fetch app (using APIs, reading docs, DOM updates)
- More complex fetch (query params, saving to localStorage)

Need a next project they can tackle more independently.

#askfedi #teachers

Some colleagues and I are working on some lab procedures for high schoolers on the topic of climate change. In particular, comparing methane vs CO2 as greenhouse gases.

I was going to have an advanced class prep CH4 with sodium acetate + soda lime, but I don't have CaO. Can MgO be replaced for that preparation?

Boosts appreciated, thanks in advance.

#chemistry #askfedi

I can't believe I have to ask this, but how does one subscribe to Apple TV+ without the free 7 day trial? I used that years ago, would like to resubscribe, but can find absolutely no way to do so.

#askfedi #apple

My codeberg pages site is down very frequently. Does anyone have recommendations for where else I could go for web hosting? I don't need much, it's just a simple static site, that's all.
#askfedi #askfediverse #webhosting

#Math question:

Given an expression:

R = k * A^x * B^y

Where R, A, B are known and k is constant, taking the log yields:

log(R) = log(k) + (x * log(A)) + (y * log(B))

I don't understand why it is the _sum_ of the logs on the left.

#askfedi

Gonna do a poll because why not.

If you're a #webdev or webdev #teacher, I need input on what to do next with a first year web development class.

We're working on JS. Just finishing up a simple rock/paper/scissors game to learn about conditionals and flow control & more DOM practice, etc. I need a next project that will push them a little and add some new concepts.

Thanks in advance, boosts appreciated.

#askfedi

#Chemistry fediverse, looking for some help:

I have a spreadsheet with rate data from testing a new lab [1]. The iodate showed a nice 2nd order result, but the bisulfite is throwing me off.

HSO3- is confusing me. Warm had wide variations, cold did better. I didn't think temp would change the rate order, but I'm not sure what to do with it. Calculated cold ~ [HSO3-]^2, calculated hot ~ [HSO3-]^3.5.

My math works, but feeling stuck on why.

1. https://docs.google.com/spreadsheets/d/1EJHdLee4H3Md3Q_cIWxNqxp644OMkcXIS_TlU0PX9w8/edit?gid=0#gid=0

#askfedi

Hey #AskFedi / #HiveMind,

Is there an #fzf option like --dont-display-anything-if-the-input-is-a-single-line-just-go-ahead-and-pass-it-on-to-STDOUT?

Does anyone have an iodine clock reaction procedure they like for AP/IB chemistry?

I've looked at a dozen or so that are a little too advanced. I'd rather not retype one if I can avoid it.

#teaching #chemistry #askfedi

I had my #chemistry students do an enthalpy of solution lab today that had some _weird_ results - like, way off.

Our calculated dH for MgSO4 was -2.56 kJ/mol compared to the known -91.2 kJ/mol.

The bottle was anhydrous, but my guess is that the age of the bottle had some hydrate mixed in with it which reduced the energy change significantly? I'm at a loss for this one.

Any other ideas?

#askfedi #teaching

I'm getting the distinct feeling that my preferred #SimpleNote client, sncli has been abandoned.

That is very not good for me. I must seek to find a replacement for Simplenote that has a solid TUI/CLI, and cross-platform support.
I do not know of any others.

#AskFedi, any tips? I can always just sync plain .md notes with syncthing, but that has a couple pain points: phone battery life, and the loss of the ability to easily share a note with someone else collaboratively