It's not different, it's the same stuff calcium carbonate, calcium carbonate.

They can pull calcium out of the environment, and put down a layer of calcium and then carbonate, calcium and carbonate.

And they said, calcium carbonate.

And so any incremental hydroxide you add will actually go to build the hydroxide concentration.

Calcium is absent from his diet.

low concentrations of both hydroxide and hydrogen.

The hydroxide concentration is overwhelming your hydrogen concentration.

And you titrated it with this sodium hydroxide.

Medullary tissue is the calcium build up, the calcium storage basically, when an animal is pregnant, when a bird is pregnant.

You have an equal amount of hydroxide and hydrogen.

Because that's the point where you're going from having a majority of hydrogen versus hydroxide, to having a majority of hydroxide versus hydrogen.

like calcium, potassium and magnesium from out of desalination brine.

The main framework material of coral reefs is calcium carbonate.

And then above that, you're just adding more and more hydroxide.

Which is the hydrochloric acid, and which is the ammonium hydroxide?

And I said, that's what this is this is calcium carbonate.

It's possible because the mycelium produces oxalic acids, and many other acids and enzymes, pockmarking rock and grabbing calcium and other minerals and forming calcium oxalates.

If your hydroxide concentration is equal to your hydrogen concentration, you're neutral.

That these actual molecules of hydroxide are going to react with these things.

Where the hydroxide concentration is going to be greater than your hydrogen concentration.

You can see the calcium buildup on the head of the poporo gourd.

When you evaporate seawater, the first thing to crystallize out is calcium carbonate.

So, fungi and mycelium sequester carbon dioxide in the form of calcium oxalates.

What happens, first of all, when there's an equal amount of hydroxide and hydrogen?

So I must have added 1 mole of hydroxide to get to this point.

Oh, by the way, just in case you weren't already guessing, it's calcium carbonate.

And so on this axis, I'm going to slowly add more and more of this hydroxide.

So what's going to happen? As I slowly add hydroxide, it's going to increase the pH.

After this point, any hydroxide you add will essentially contribute to increasing the pH even more.

Because everything is oxidized, all the rocks, then silicon, aluminum, iron, calcium, a bunch of stuff.

An artificial structure conjured into being by the calcium ion exchange of a million synaptic fringes.

So vitamin D is good for you it stops rickets, it prevents calcium metabolism, important stuff.

There are many organisms that build their shells out of calcium carbonate plants and animals both.

But what I'm going to do is I'm going to add a strong base. Let's say sodium hydroxide.

Acid rain from cities and industries leeches the soil of vital nutrients, such as potassium, calcium, and magnesium.

This abalone shell is a biocomposite material that's 98 percent by mass calcium carbonate and two percent by mass protein.

Remember, hydroxide is a strong base. So the NaOH disassociates completely in an aqueous solution. To OH minus plus sodium cation.

Those of you in track two, take your hydrochloric acid and your ammonium hydroxide and carefully... pour them into... your beakers.

So there's some point where your hydroxide concentration is equal to your hydrogen concentration, and your pH is going to be 7.

Because the lowly abalone is able to lay down the calcium carbonate crystals in layers, making this beautiful, iridescent mother of pearl.

You've essentially sopped up all of the hydrogen, but you also have sopped up all of the hydroxide that you've added so far.

And you said, well, gee, when I added 1 mole because you figured out at a liter of the solution of hydroxide ions.

And that builds up on the evaporators and that's what that image on the left is gradually getting encrusted with the calcium carbonate.

It was during this time that there was increased calcium, iron and silicon in the environment, and organisms learned how to make hard materials.

So which means that it's really impossible to find an object where you find about 10 times more sulfur than silicon, five times more calcium than oxygen.