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

Update: issue solved / question answered thanks to ✨ the magic of the #Fediverse ✨

@shalien wrote: Multiple hashtag usually do the trick such as #AskFedi #TheDomain #TheIssue

@oblomov suggested using the tag #NewbieHelp

@regendans recommended the Lemmy community https://lemmy.world/c/selfhosted

Many thanks as well to everyone who volunteered to help answer my questions! ❤️

@_elena Hi, FediAdmin here. happy to help if I can and you want .

Multiple hashtag usually do the trick such as #AskFedi #TheDomain #TheIssue

#AskFedi: is there a hashtag on here about technical questions that a newbie could ask – without judgement?

Because I have SO MANY QUESTIONS (especially since I started my #selfhosting journey), I cannot find the right answers through online searches and I'm certain Fedi people could offer good advice... I'm just too embarrassed to ask most of the time.

I wish there was a "hire a nice, trusted dev for 30 minutes" service, LOL 😅

How do you go about a #CSS cleanup? This is not a redesign - more of an audit and rewrite to consolidate selectors that have sprawled into difficult to manage territories.

Any strategies and tips appreciated.

#webdev #askfedi

I've realized that I don't know what "good character development" means in novels. So, I'm looking for suggestions for novels which offer good character development.

Any and all genres, boosts appreciated.

#askfedi

Today's win: went and got an indoor exercise bike for a great deal and discovered a wahoo cadence Bluetooth sensor on the crank that the seller didn't notice.

Anyone have recommendations for FOSS cycling apps it can be paired with to track indoor rides?

#cycling #askfedi

#AskFedi: are there any #Sharkey power users out there, willing to speak to me for a piece I’m writing about the software?

Spoiler alert: I have been using #Sharkey for two months now and I am totally smitten with it, especially its gorgeous UX/UI.

Bonus points if you also use / are familiar with #MissKey, so we could compare/contrast features.

Boosts would be greatly appreciated. Thanks! 🙏

I need to get my wife a new phone. Her old iPhone 6S has finished it's second battery and is not receiving updates anymore and now apps are starting to not even work on it. I hate to give up on it because I can replace a battery and it still works, but the iOS update makes it not worth the effort..

What's the next iPhone version still getting updates that isn't the size of an aircraft carrier?

#askfedi

Anyone have charting/graphing libraries they like these days? I've done some building with matplotlib returning SVG charts, but no interactive components.

I've not looked deeply into JS charting options, so I'm curious to know what works well for lite applications.

#askfedi #webdev

My wife and I are looking for an indoor bike trainer. I found a used Bkool Smart Go for a good price. Some questions:

Can it be used without a paid Bkool subscription?
Will it link to Strava? Can't seem to find a good answer.

#cycling #askfedi

Chemistry teachers of the fediverse - how do you produce or procure distilled water?

We have a countertop still that I run for about a week each month to top off a carboy. I'm sparing when washing dishes because of this, so I have stray ions.

Does anyone have a plumbed-in still they like? We may be able to upgrade next year and I'm looking for recs.

#chemistry #teachers #askfedi

I'm trying to revive a piece of lab equipment. It has a 250V glass line fuse that blows when switched on.

The sticker says it runs 200W, 120V, and 2.5 amps. Is this either because the fuse is too small for the power use or an indicator that there's a short somewhere in the controls?

#askfedi #diy #repair #electronics

I'm asking a lot these days, but another #webdev question for the masses:

My HS web dev class is ready for a Javascript intro. I'm torn between:

- teaching the DOM and scaffolding off their HTML and CSS experience, or
- starting from the basics with variables, loops, and conditionals and work up to DOM interaction.

Any thoughts on pros/cons of each? Thanks in advance and feel free to boost for reach.

#askfedi