Recent comments in /f/LifeProTips

Scuka1 t1_j2e6321 wrote

Lol, unless you're an 80 year old grandma with arthritis, you're not going to buy a useful amount of weights with 30$.

I wholly agree that buying your own set of weights pays off relatively quickly compared constantly paying gym membership, but first you need to have space to put them in your house and you actually need to have the discipline to use them (otherwise it's a wasted investment).

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Skyblacker t1_j2e5rxx wrote

If you didn't learn to cook at your mother's knee, it's a skill that has to be learned as an adult. Which makes the mental load of it much higher. Every meal takes more deliberate effort and is less likely to actually be consumed. Which is discouraging.

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dantodd OP t1_j2e5rpg wrote

Of course. Soda is carbonated by dissolving carbon dioxide gas into the base drink. You can dissolve other gases into liquid too. For example nitrogen dissolved into a liquid is pretty common and they call it "nitro" which is where a nitro stout beer and nitro coffee get their names from. In fact, I just saw nitro Pepsi on the shelf the other day for the first time.

So, now we have a gas dissolved into our liquid. As the gas escapes the solution it comes out in the form of bubbles. And what we are trying to prevent is all the bubbles escaping from the soda left over in the bottle..

In order to prevent the gas escaping you want to apply pressure to the liquid. You can imagine it like the high pressure prevents the bubbles from growing larger and coming out of the solution.

You can see this every day in a plastic soda bottle. When all the CO2 is in solution the bottle is very hard. If you open a bottle and then pour out half the bottle and put it in a large cup in the counter and then tightly reseal the bottle. After a few hours the bottle will be very hard and the suits inside will still be carbonated but the soda you poured out will be flat, the gas will have mostly escaped. The same volume but one under pressure container in the bottle but the other open to just atmospheric pressure.

This is because the CO2 in the bottle begins to come out of solution just like the open cup but the bottle holds in the gas that does escape so high pressure builds again and prevents the rest of the by gas from coming out of solution which means your soda is still carbonated though at a slightly lower level than a new bottle.

(In brewing beer is often carbonated simply by pressurizing containers of flat beer with CO2 and the high pressure will force CO2 into solution thus carbonating the beer. )

If you squeeze all the air out of the 2 litter bottle all you are doing is removing air from the bottle. The gas still inside the soda is going to continue coming out of solution until it reaches equilibrium with the pressure in the bottle but a lot more gas will have to come out before that happens because there is less air inside the bottle to begin with.

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Wdl314 OP t1_j2e5fns wrote

I found this out a few years ago when I mentioned to a friend that sometimes I take a break from Nytol and take Benadryl instead because I knew taking sleep aids too frequently is bad for you in the long term. It was at this moment that she told me they are the exact same thing… oopsy. I’m hoping to spread this PSA in case anyone is as dumb as I am.

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Skyblacker t1_j2e4mgu wrote

You want to watch my kids while I do all that prep and stirring?

Considering the cost of babysitting, it would be much cheaper to buy a $10 heat-and-eat from the supermarket.

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