Recent comments in /f/explainlikeimfive

ialsoagree t1_iyd7zq3 wrote

I'm saying it's not "bonding to a molecule" if you disagree you need to take introductory chemistry.

Further, I just want to point out, hydrogen bonding only applies to ionic substances being dissolved in specific solvents. So many things dissolve without hydrogen bonding at all.

You clearly don't understand the basics of chemistry.

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its-octopeople t1_iyd7xq4 wrote

Okay, not parallel lines but parallel geodesic curves. I don't know if I can ELI5 geodesics, but I'll have a go

Okay, you can't take a straight line on a sphere, obviously. But if you walked around the equator, most people would a agree you'd walked pretty much a straight path. However, if you walked a 1 meter circle around the North pole, no-one would recognise that as a straight path, even though they're both lines of latitude and they're both parallel

What's the difference? Pick any two points on the equator. The shortest path between them (staying on the sphere), also follows the equator. For the small circle you don't have that property - you can find a shorter curve that cuts through the interior of the circle. Curves that have this shortest distance property are called geodesics

So the statement about flatness should be; two geodesics - that is, two shortest distance curves - that are parallel at some point, stay parallel their whole lengths

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Chromotron t1_iyd6vvv wrote

Maybe some examples for lesser solubility at higher temperatures that are salts:

  • many calcium salts such as its carbonate (gypsum), sulfate (chalk), phosphate, etc.;
  • sodium sulfate has its highest solubility at 33°C, it falls off in both directions;
  • unlike what many believe, table salt's solubility increases almost not with temperature; only the speed of dissolving does.

It is also interesting to note that some salts produce a lot of heat (e.g. NaOH a.k.a. caustic soda) or cold (e.g. ammonium nitrate a.k.a. the stuff that blew up Beirut, or urea). This and solubility are related, but all combinations can happen.

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LOSTandCONFUSEDinMAY t1_iyd6qt5 wrote

We use the word flat because we haven't got a specific word for 3D nor a general word to use so we use the closet one available which is 'flat' a word traditionally for 2D. Not curved/a curvature of 0, might be a less confusing way to describe the universe.

A similar issue arises when talking about 'size' in higher dimensions. An object in 1D is a line and its size is called length, in 2D you have a surface with an area, in 3D your object has a volume.

But in 4D we haven't got a unique name for its size and call it volume again. and it doesn't help that like every 3D object has a 2D surface area, a 4D object has a 3D volume. Therefore every 4D object has two measurements called volume (though its specified surface or interior volume).

And get gets worse as you go up in dimensions because every dimension you go up you get an additional type of volume to consider but the highest dimension measurement is usually considered its size.

TLDR: dimensions are confusing and we haven't got enough words in english to properly or easily talk about it.

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internetboyfriend666 t1_iyd6o6t wrote

Flat in this context doesn't mean 2 dimensional, flat means the universe is not curved, or in other words, it obeys Euclidean geometry. Euclidean geometry is the geometry that everyone is most familiar with and is most applicable in our daily lives. It's where parallel lines never meet and the sum of the angles in a triangle is always 180 degrees. There are other types of geometry where these things are not true. For example, the surface of a sphere is not Euclidean - parallel lines will always meet and the sum of angles in a triangle can be more that 180 degrees.

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nmxt t1_iyd6ju9 wrote

No it’s not always like that. During dissolving the bonds between the pieces of the solid are broken but new bonds between water molecules and ions are formed. Breaking bonds requires energy, and making bonds releases energy. Therefore, if the pieces of solid are more inclined to bonding with water than with other pieces of the same solid, then overall energy is released and the temperature rises (e.g. sugar). Otherwise, energy is consumed and the temperature falls (e.g. table salt).

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reviewbarn t1_iyd6exp wrote

Your first paragraph is accurate. The government can print money indefinitely with a forever balance of benefits/problems.

Your second paragraph is quasi accurate. Overprinting money is ONE way inflation can happen, but not the only one. And more importantly, it is NOT the cause of the current GLOBAL inflation, nor is it relevant to the OP's question.

He asked specifically how two programs were paid for, and neither were paid for in the manner you suggest here.

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ThatCrossDresser t1_iyd5szp wrote

At a basic level heat is just molecules moving around more. The colder it is, the slower water molecules fly around. Water molecules either bind or breakdown other molecules through typical chemical processes. When water comes in contact with glucose it binds with it and your Hot Chocolate mix starts to become one fluid instead of water and a powder. So the more the molecules are moving around the more likely they are to come into contact with the thing you are dissolving. Fats also undergo chemical changes when they get hot so they may become fluid and mix better in water.

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WinBarr86 t1_iyd5s0i wrote

I'm trying to keep it simple. But plz do explain. Without explaining like your talking to a scientist who knows alot of the concepts of space/time.

Edit.

But we both know space isn't flat.

Spacetime is not flat. It can't be: Einstein's general theory of relativity says that matter and energy curve spacetime, and there are enough matter and energy lying around to provide for curvature.

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KKtwo t1_iyd5l2z wrote

Imagine you’re moving into a new house. You have all your possession in boxes and they take up your living room leaving the rest of the house empty. You unpack your possessions and fill the rest of the house making it easy to find and use things.

Downloading Windows onto your hard drive or ssd is the same as putting your ‘moving boxes’ on the drive. Installing windows is the same as unpacking and settling in and having files where they need to be to use them.

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